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Binary Mismatch CodeChef Solution

Problem -Binary Mismatch CodeChef Solution

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Binary Mismatch CodeChef Solution in C++17

#include <bits/stdc++.h>

#pragma optimization_level 3
#pragma GCC optimize("Ofast,no-stack-protector,unroll-loops,fast-math,O3")
#pragma GCC target("sse,sse2,sse3,ssse3,sse4,popcnt,abm,mmx,avx")
#pragma GCC optimize("Ofast")//Comment optimisations for interactive problems (use endl)
#pragma GCC target("avx,avx2,fma")
#pragma GCC optimization ("unroll-loops")

using namespace std;

struct PairHash {inline std::size_t operator()(const std::pair<int, int> &v) const { return v.first * 31 + v.second; }};

// speed
#define Code ios_base::sync_with_stdio(false);
#define By ios::sync_with_stdio(0);
#define Sumfi cout.tie(NULL);

// alias
using ll = long long;
using ld = long double;
using ull = unsigned long long;

// constants
const ld PI = 3.14159265358979323846;  /* pi */
const ll INF = 1e18;
const ld EPS = 1e-9;
const ll MAX_N = 1010101;
const ll mod = 998244353;

// typedef
typedef pair<ll, ll> pll;
typedef vector<pll> vpll;
typedef array<ll,3> all3;
typedef array<ll,5> all5;
typedef vector<all3> vall3;
typedef vector<all5> vall5;
typedef vector<ld> vld;
typedef vector<ll> vll;
typedef vector<vll> vvll;
typedef vector<int> vi;
typedef deque<ll> dqll;
typedef deque<pll> dqpll;
typedef pair<string, string> pss;
typedef vector<pss> vpss;
typedef vector<string> vs;
typedef vector<vs> vvs;
typedef unordered_set<ll> usll;
typedef unordered_set<pll, PairHash> uspll;
typedef unordered_map<ll, ll> umll;
typedef unordered_map<pll, ll, PairHash> umpll;

// macros
#define rep(i,m,n) for(ll i=m;i<n;i++)
#define rrep(i,m,n) for(ll i=n;i>=m;i--)
#define all(a) begin(a), end(a)
#define rall(a) rbegin(a), rend(a)
#define ZERO(a) memset(a,0,sizeof(a))
#define MINUS(a) memset(a,0xff,sizeof(a))
#define INF(a) memset(a,0x3f3f3f3f3f3f3f3fLL,sizeof(a))
#define ASCEND(a) iota(all(a),0)
#define sz(x) ll((x).size())
#define BIT(a,i) (a & (1ll<<i))
#define BITSHIFT(a,i,n) (((a<<i) & ((1ll<<n) - 1)) | (a>>(n-i)))
#define pyes cout<<"YES\n";
#define pno cout<<"NO\n";
#define endl "\n"
#define pneg1 cout<<"-1\n";
#define ppossible cout<<"Possible\n";
#define pimpossible cout<<"Impossible\n";
#define TC(x) cout<<"Case #"<<x<<": ";
#define X first
#define Y second

// utility functions
template <typename T>
void print(T &&t)  { cout << t << "\n"; }
template<typename T>
void printv(vector<T>v){ll n=v.size();rep(i,0,n){cout<<v[i];if(i+1!=n)cout<<' ';}cout<<endl;}
template<typename T>
void printvln(vector<T>v){ll n=v.size();rep(i,0,n)cout<<v[i]<<endl;}
void fileIO(string in = "input.txt", string out = "output.txt") {freopen(in.c_str(),"r",stdin); freopen(out.c_str(),"w",stdout);}
void readf() {freopen("", "rt", stdin);}
template<typename T>
void readv(vector<T>& v){rep(i,0,sz(v)) cin>>v[i];}
template<typename T, typename U>
void readp(pair<T,U>& A) {cin>>A.first>>A.second;}
template<typename T, typename U>
void readvp(vector<pair<T,U>>& A) {rep(i,0,sz(A)) readp(A[i]); }
void readvall3(vall3& A) {rep(i,0,sz(A)) cin>>A[i][0]>>A[i][1]>>A[i][2];}
void readvall5(vall5& A) {rep(i,0,sz(A)) cin>>A[i][0]>>A[i][1]>>A[i][2]>>A[i][3]>>A[i][4];}
void readvvll(vvll& A) {rep(i,0,sz(A)) readv(A[i]);}

struct Combination {
    vll fac, inv;
    ll n, MOD;

    ll modpow(ll n, ll x, ll MOD = mod) { if(!x) return 1; ll res = modpow(n,x>>1,MOD); res = (res * res) % MOD; if(x&1) res = (res * n) % MOD; return res; }

    Combination(ll _n, ll MOD = mod): n(_n + 1), MOD(MOD) {
        inv = fac = vll(n,1);
        rep(i,1,n) fac[i] = fac[i-1] * i % MOD;
        inv[n - 1] = modpow(fac[n - 1], MOD - 2, MOD);
        rrep(i,1,n - 2) inv[i] = inv[i + 1] * (i + 1) % MOD;
    }

    ll fact(ll n) {return fac[n];}
    ll nCr(ll n, ll r) {
        if(n < r or n < 0 or r < 0) return 0;
        return fac[n] * inv[r] % MOD * inv[n-r] % MOD;
    }
};

struct Matrix {
    ll r,c;
    vvll matrix;
    Matrix(ll r, ll c, ll v = 0): r(r), c(c), matrix(vvll(r,vll(c,v))) {}

    Matrix operator*(const Matrix& B) const {
        Matrix res(r, B.c);
        rep(i,0,r) rep(j,0,B.c) rep(k,0,B.r) {
                    res.matrix[i][j] = (res.matrix[i][j] + matrix[i][k] * B.matrix[k][j] % mod) % mod;
                }
        return res;
    }

    Matrix copy() {
        Matrix copy(r,c);
        copy.matrix = matrix;
        return copy;
    }

    Matrix pow(ll n) {
        assert(r == c);
        Matrix res(r,r);
        Matrix now = copy();
        rep(i,0,r) res.matrix[i][i] = 1;
        while(n) {
            if(n & 1) res = res * now;
            now = now * now;
            n /= 2;
        }
        return res;
    }
};

// geometry data structures
template <typename T>
struct Point {
    T y,x;
    Point(T y, T x) : y(y), x(x) {}
    Point(pair<T,T> p) : y(p.first), x(p.second) {}
    Point() {}
    void input() {cin>>y>>x;}
    friend ostream& operator<<(ostream& os, const Point<T>& p) { os<<p.y<<' '<<p.x<<'\n'; return os;}
    Point<T> operator+(Point<T>& p) {return Point<T>(y + p.y, x + p.x);}
    Point<T> operator-(Point<T>& p) {return Point<T>(y - p.y, x - p.x);}
    Point<T> operator*(ll n) {return Point<T>(y*n,x*n); }
    Point<T> operator/(ll n) {return Point<T>(y/n,x/n); }
    bool operator<(const Point &other) const {if (x == other.x) return y < other.y;return x < other.x;}
    Point<T> rotate(Point<T> center, ld angle) {
        ld si = sin(angle * PI / 180.), co = cos(angle * PI / 180.);
        ld y = this->y - center.y;
        ld x = this->x - center.x;

        return Point<T>(y * co - x * si + center.y, y * si + x * co + center.x);
    }
    ld distance(Point<T> other) {
        T dy = abs(this->y - other.y);
        T dx = abs(this->x - other.x);
        return sqrt(dy * dy + dx * dx);
    }

    T norm() { return x * x + y * y; }
};

template<typename T>
struct Line {
    Point<T> A, B;
    Line(Point<T> A, Point<T> B) : A(A), B(B) {}
    Line() {}

    void input() {
        A = Point<T>();
        B = Point<T>();
        A.input();
        B.input();
    }

    T ccw(Point<T> &a, Point<T> &b, Point<T> &c) {
        T res = a.x * b.y + b.x * c.y + c.x * a.y;
        res -= (a.x * c.y + b.x * a.y + c.x * b.y);
        return res;
    }

    bool isIntersect(Line<T> o) {
        T p1p2 = ccw(A,B,o.A) * ccw(A,B,o.B);
        T p3p4 = ccw(o.A,o.B,A) * ccw(o.A,o.B,B);
        if (p1p2 == 0 && p3p4 == 0) {
            pair<T,T> p1(A.y, A.x), p2(B.y,B.x), p3(o.A.y, o.A.x), p4(o.B.y, o.B.x);
            if (p1 > p2) swap(p2, p1);
            if (p3 > p4) swap(p3, p4);
            return p3 <= p2 && p1 <= p4;
        }
        return p1p2 <= 0 && p3p4 <= 0;
    }

    pair<bool,Point<ld>> intersection(Line<T> o) {
        if(!this->intersection(o)) return {false, {}};
        ld det = 1. * (o.B.y-o.A.y)*(B.x-A.x) - 1.*(o.B.x-o.A.x)*(B.y-A.y);
        ld t = ((o.B.x-o.A.x)*(A.y-o.A.y) - (o.B.y-o.A.y)*(A.x-o.A.x)) / det;
        return {true, {A.y + 1. * t * (B.y - A.y), B.x + 1. * t * (B.x - A.x)}};
    }

    //@formula for : y = ax + b
    //@return {a,b};
    pair<ld, ld> formula() {
        T y1 = A.y, y2 = B.y;
        T x1 = A.x, x2 = B.x;
        if(y1 == y2) return {1e9, 0};
        if(x1 == x2) return {0, 1e9};
        ld a = 1. * (y2 - y1) / (x2 - x1);
        ld b = -x1 * a + y1;
        return {a, b};
    }
};

template<typename T>
struct Circle {
    Point<T> center;
    T radius;
    Circle(T y, T x, T radius) : center(Point<T>(y,x)), radius(radius) {}
    Circle(Point<T> center, T radius) : center(center), radius(radius) {}
    Circle() {}

    void input() {
        center = Point<T>();
        center.input();
        cin>>radius;
    }

    bool circumference(Point<T> p) {
        return (center.x - p.x) * (center.x - p.x) + (center.y - p.y) * (center.y - p.y) == radius * radius;
    }

    bool intersect(Circle<T> c) {
        T d = (center.x - c.center.x) * (center.x - c.center.x) + (center.y - c.center.y) * (center.y - c.center.y);
        return (radius - c.radius) * (radius - c.radius) <= d and d <= (radius + c.radius) * (radius + c.radius);
    }

    bool include(Circle<T> c) {
        T d = (center.x - c.center.x) * (center.x - c.center.x) + (center.y - c.center.y) * (center.y - c.center.y);
        return d <= radius * radius;
    }
};

ll __gcd(ll x, ll y) { return !y ? x : __gcd(y, x % y); }
all3 __exgcd(ll x, ll y) { if(!y) return {x,1,0}; auto [g,x1,y1] = __exgcd(y, x % y); return {g, y1, x1 - (x/y) * y1}; }
ll __lcm(ll x, ll y) { return x / __gcd(x,y) * y; }
ll modpow(ll n, ll x, ll MOD = mod) { n%=MOD; if(!x) return 1; ll res = modpow(n,x>>1,MOD); res = (res * res) % MOD; if(x&1) res = (res * n) % MOD; return res; }


vll solve(string s) {
    if(sz(s) & 1) return {};
    ll cnt = count(all(s),'1');
    if(cnt == sz(s) / 2) return {1,sz(s)};
    ll t = sz(s) / 2 - cnt, now = 0;
    umll freq;
    rep(i,0,sz(s)) {
        if(s[i] == '1') now += 1;
        else now -= 1;
        if(freq.count(now + t)) return {freq[now + t] + 1, i + 1};
        freq[now] = i + 1;
    }

    return {};
}

int main() {
    Code By Sumfi
    cout.precision(12);
    ll tc = 1;
    cin>>tc;
    rep(i,1,tc+1) {
        ll n;
        cin>>n;
        string s;
        cin>>s;
        auto res = solve(s);
        if(sz(res)) {
            pyes
            printv(res);
        } else pno
    }
    return 0;
}

Binary Mismatch CodeChef Solution in C++14

#include <bits/stdc++.h>
using namespace std;

int main() {
	// your code goes here
	int t;
	cin>>t;
	while(t--) {
		int n;
		cin>>n;
		string s;
		cin>>s;
		if(n%2!=0 or n==1) cout<<"NO\n";
		else {
			int o=0,z=0;
			for(int i=0; i<n; i++) {
				if(s[i]=='0') z++;
				else o++;
			}
			if(o==z) {
				cout<<"YES\n";
				cout<<1<<" "<<n<<endl;
			} else {
				int i=0;
				int flag = 0;
				for(; i<n; i++) {
					if(s[i]=='0') {
						z--;
						o++;
					} else {
						z++;
						o--;
					}
					if(z==o) {
						flag = 1;
						break;
					}
				}
				if(flag==1) cout<<"YES\n"<<1<<" "<<i+1<<endl;
				else cout<<"No\n";
			}
		}
	}

	return 0;
}

Binary Mismatch CodeChef Solution in PYTH 3

# cook your dish here
for _ in range(int(input())):
    n=int(input())
    s=str(input())
    if n%2:print("NO")
    else:
        # print(s)
        x=(s.count("1")-s.count("0"))//2
        print("YES")
        cur=0
        for pos,i in enumerate(s):
            if i=="1":
                cur+=1
            else:cur-=1
            if cur==x:
                print(1,pos+1)
                break

Binary Mismatch CodeChef Solution in C

#include<stdio.h>
int main()
{
    int test,one,zero,equal,i,len,end;
    scanf("%d",&test);

    while(test--)
    {
        one++; zero++; equal =0; end=1;
        scanf("%d ",&len);
        char arr[len];
        scanf("%s",arr);

        if(len % 2 ==0)
        {
            for(i = 0 ; i < len ; i++)
            {
                if(arr[i] == '1')
                    one++;
                else
                    zero++;
            }

            for(i = 0 ; i < len ; i++)
            {
                if(zero == one)
                {
                    equal = 1; end = i;
                    break;
                }
                if(arr[i] == '1')
               { one--; zero++; }
                else
                { zero--; one++; }


            }

            if(equal == 1)
            {
                printf("YES\n");
                if(end != 0)
                    printf("1 %d\n",end);
                else
                printf("1 %d\n",len);

            }
            else
                printf("NO\n");

        }
        else
            printf("NO\n");



    }
    return 0;
}

Binary Mismatch CodeChef Solution in JAVA

/* package codechef; // don't place package name! */

import java.util.*;
import java.lang.*;
import java.io.*;

/* Name of the class has to be "Main" only if the class is public. */
class Codechef
{
	public static void main (String[] args) throws java.lang.Exception
	{
		// your code goes here
		Scanner sc=new Scanner(System.in);
		int t=sc.nextInt();
		
		while(t-->0){
		    int n=sc.nextInt();
		    String str=sc.next();
		    int c0=0,c1=0;
		    
		    for(int i=0;i<n;i++){
		        char ch=str.charAt(i);
		        if(ch=='0'){
		            c0++;
		        }
		        else{
		            c1++;
		        }
		    }
		    
		    int dif=Math.abs(c1-c0);
		    
		    if((dif&1)!=0){
		        System.out.println("NO");
		    }
		    
		    else{
		        System.out.println("YES");
		        if(c0==c1){
		            System.out.println("1"+" "+n);
		        }
		        else{
		            int r=0;
		            for(int i=0;i<n;i++){
		                if(str.charAt(i)=='1'){
		                    c0++;
		                    c1--;
		                }
		                else{
		                    c1++;
		                    c0--;
		                }
		                
		                if(c1==c0){
		                    r=i+1;
		                }
		            }
		            System.out.println(1+" "+r);
		            
		        }
		        
		        
		        
		    }
		    
		    
		}
		
	}
}

Binary Mismatch CodeChef Solution in PYPY 3

for i in range(int(input())):
    n=int(input())
    s=input()
    if(n%2):
        print("NO")
    else:
        print("YES")
        d=s.count('1')-s.count('0')
        c=0
        for i in range(n):
            if s[i]=='0' :
                c-=1 
            else :
                c+=1 
            if 2*c==d:
                print(1,i+1)
                break
            

Binary Mismatch CodeChef Solution in C#

using System;
using System.Linq;
using System.Collections.Generic;
using System.Text.RegularExpressions;
using System.Text;
using System.Numerics;


public class Test
{
    public static int GetInt() => int.Parse(Console.ReadLine());
    public static long GetLong() => long.Parse(Console.ReadLine());
    
    public static int[] GetIntArray() =>  Console.ReadLine().Trim().Split(' ').Select(int.Parse).ToArray();
    public static long[] GetLongArray() =>  Console.ReadLine().Trim().Split(' ').Select(long.Parse).ToArray();
	
	public static int Gcd(int a, int b) => b == 0 ? a : Gcd(b, a%b);
	public static int Gcd(int[] n) => n.Aggregate((a,b) => Gcd(a,b));

	public static void Main()
	{
    var t=GetInt(); for(int i = 0; i<t; i++) { Solve(); }
  	// Solve(); 
	}
	
	public static void Solve()
	{
	  int n = GetInt();
	  string s = Console.ReadLine();
	  if(s.Length % 2 != 0)
	  {
	    Console.WriteLine("NO");
	    return;
	  }
	  else
	  {
	    Console.WriteLine("YES");
	    //find
	    int onesMore = 0;
	    for(int i=0; i<n; i++)
	      onesMore += s[i] == '1' ? 1 : -1;
	    if(onesMore == 0)
	    {
	      Console.WriteLine("1 "+n);
	      return;
	    }
	    int l=0;
	    int r =0;
	    int target = onesMore / 2;
	    int cur = 0;
	    for(int i=0;i<n;i++)
	    {
	      cur += s[i] == '1' ? 1 : -1;
	      if(cur == target)
	      {
	        r = i;
	        break;
	      }
	    }
	    Console.WriteLine($"{l+1} {r+1}");
	  }
	}
}

Binary Mismatch CodeChef Solution in GO

package main

import (
	"bufio"
	"bytes"
	"fmt"
	"os"
)

func main() {

	reader := bufio.NewReader(os.Stdin)

	tc := readNum(reader)
	var buf bytes.Buffer
	for tc > 0 {
		tc--
		n := readNum(reader)
		s, _ := reader.ReadString('\n')
		res := solve(n, s)
		if len(res) == 0 {
			buf.WriteString("NO\n")
		} else {
			buf.WriteString("YES\n")
			buf.WriteString(fmt.Sprintf("%d %d\n", res[0], res[1]))
		}
	}
	fmt.Print(buf.String())
}

func readUint64(bytes []byte, from int, val *uint64) int {
	i := from

	var tmp uint64
	for i < len(bytes) && bytes[i] >= '0' && bytes[i] <= '9' {
		tmp = tmp*10 + uint64(bytes[i]-'0')
		i++
	}
	*val = tmp

	return i
}

func readInt(bytes []byte, from int, val *int) int {
	i := from
	sign := 1
	if bytes[i] == '-' {
		sign = -1
		i++
	}
	tmp := 0
	for i < len(bytes) && bytes[i] >= '0' && bytes[i] <= '9' {
		tmp = tmp*10 + int(bytes[i]-'0')
		i++
	}
	*val = tmp * sign
	return i
}

func readString(reader *bufio.Reader) string {
	s, _ := reader.ReadString('\n')
	for i := 0; i < len(s); i++ {
		if s[i] == '\n' {
			return s[:i]
		}
	}
	return s
}

func readNum(reader *bufio.Reader) (a int) {
	bs, _ := reader.ReadBytes('\n')
	readInt(bs, 0, &a)
	return
}

func readTwoNums(reader *bufio.Reader) (a int, b int) {
	res := readNNums(reader, 2)
	a, b = res[0], res[1]
	return
}

func readThreeNums(reader *bufio.Reader) (a int, b int, c int) {
	res := readNNums(reader, 3)
	a, b, c = res[0], res[1], res[2]
	return
}

func readNNums(reader *bufio.Reader, n int) []int {
	res := make([]int, n)
	x := 0
	bs, _ := reader.ReadBytes('\n')
	for i := 0; i < n; i++ {
		for x < len(bs) && (bs[x] < '0' || bs[x] > '9') && bs[x] != '-' {
			x++
		}
		x = readInt(bs, x, &res[i])
	}
	return res
}

func solve(n int, s string) []int {
	if n%2 == 1 {
		return nil
	}
	// cnt[i] = 1 in until i
	// 1 - cnt[i] = 0 cnt
	// cnt[n] + r - 2 * cnt[r] - (l - 1 - 2 * cnt[l-1]) = n / 2
	cnt := make([]int, n+1)
	for i := 1; i <= n; i++ {
		cnt[i] = cnt[i-1]
		if s[i-1] == '1' {
			cnt[i]++
		}
	}

	pos := make(map[int]int)

	get := func(v int) int {
		if i, ok := pos[v]; ok {
			return i
		}
		return n + 1
	}
	// pos[0] = -1
	pos[0] = 0
	delta := n/2 - cnt[n]
	for r := 1; r <= n; r++ {
		cur := r - 2*cnt[r]
		l := get(cur-delta) + 1
		if l <= r {
			return []int{l, r}
		}
		pos[cur] = r
	}

	return nil
}
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