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Path-etic Sums CodeChef Solution

Path-etic Sums CodeChef Solution in C++17

``````#include"bits/stdc++.h"
#define nl '\n'
using namespace std;
typedef long long ll;
const int N = 105;
vector<int>g[N];
int ans[N];
void dfs(int u, int par, int s) {
if(s%2) {
ans[u] = 2;
}
else ans[u] = 1;
for(auto v : g[u]) {
if(v != par) {
dfs(v, u, s + 1);
}
}
}
void solve() {
memset(ans, 0, sizeof ans);
memset(g, 0, sizeof g);
int n; cin >> n;
for(int i = 1; i <= n - 1; i++) {
int x, y; cin >> x >> y;
g[x].push_back(y);
g[y].push_back(x);
}
dfs(1, -1, 1);
for(int i = 1; i <= n; i++) {
cout << ans[i] << " ";
}
cout << nl;
}
int main() {
ios_base::sync_with_stdio(NULL);
cin.tie(NULL); cout.tie(NULL);

int t = 1;
cin >> t;
for(int i =  1; i <= t; i++) {
// cout << "Case " << i << ": ";
solve();
}

return 0;
}  ``````

Path-etic Sums CodeChef Solution in C++14

``````#include<bits/stdc++.h>
#define ll long long
#define pb push_back
#define el '\n'
using namespace std;
const int N = 105;
vector<int>g[N];
int col[N];
bool vis[N];
void dfs(int u){
vis[u]=1;
for(int i = 0;i<g[u].size();i++){
int v = g[u][i];
if(!vis[v]){
col[v]=col[u]^1;
dfs(v);
}
}
}
void solve(){
int n,m,i,j,u,v;
cin>>n;
for(i=1;i<=n;i++){
g[i].clear();vis[i]=0;col[i]=0;
}
for(i=1;i<n;i++){
cin>>u>>v;
g[u].pb(v);
g[v].pb(u);
}
dfs(1);
for(i=1;i<=n;i++){
if(col[i]==0) cout<<2<<' ';
else cout<<1<<' ';
}
cout<<el;
}
int main(){
int tc;
cin>>tc;
while(tc--){
solve();
}
}``````

Path-etic Sums CodeChef Solution in PYTH 3

``````# cook your dish here
from collections import defaultdict

color = [0] * n

def dfs(i,curr):
color[i-1] = curr

if color[nei-1] > 0:
continue
dfs(nei,curr ^ 3)

for i in range(1,n+1):
if color[i-1] > 0:
continue

dfs(i,1)

return ' '.join(map(str,color))

for _ in range(int(input())):
n = int(input())

for _ in range(n-1):
u,v = list(map(int,input().split()))

Path-etic Sums CodeChef Solution in C

``````#include<stdio.h>
#include<stdlib.h>
int *ans;
int n;
void assign(int l,int p);
int main()
{
int i,t;
scanf("%d",&t);
for(i=0;i<t;i++)
{
int j,u,v;
scanf("%d",&n);
ans=(int *)calloc(n,sizeof(int));
for(j=0;j<n;j++)
{
}
for(j=0;j<n-1;j++)
{
scanf("%d%d",&u,&v);
}
ans[0]=4;
for(j=1;j<n;j++)
{
{
assign(1,j);
}
}
for(j=0;j<n;j++)
printf("%d ",ans[j]);

printf("\n");

free(ans);
}
return 0;

}
void assign(int l,int p)
{
int j;
if(l%2==0)
ans[p]=4;
else
ans[p]=5;
l=l+1;
for(j=0;j<n;j++)
{
{
assign(l,j);
}

}
return;
}``````

Path-etic Sums CodeChef Solution in JAVA

``````import java.io.*;
import java.util.*;
/* 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
{
BufferedWriter write = new BufferedWriter(new OutputStreamWriter(System.out));

for (int it = 1; it <= ts; it++) {

//            int n = Integer.parseInt(string[0]);
//            int k = Integer.parseInt(string[1]);
//            int y = Integer.parseInt(string[2]);
//            int z = Integer.parseInt(string[3]);

//            int[][] mat = new int[n + 1][n + 1];

ArrayList<ArrayList<Integer>> list = new ArrayList<>();
for (int i = 0; i <= n; i++) list.add(new ArrayList<>());
for (int i = 0; i < n - 1; i++) {
int x = Integer.parseInt(str[0]);
int y = Integer.parseInt(str[1]);

//                mat[x][y] = mat[y][x] = w;
}
level = new int[n+1];
level[1] = 1;
dfs(list,1,-1,1);

for (int i = 1; i <= n; i++) {
if(level[i]%2== 0)
write.write("1 ");
else
write.write("2 ");
}
write.write("\n");

}
write.flush();
write.close();
}

private static void dfs(ArrayList<ArrayList<Integer>> list, int node, int parent, int lev) {
level[node] = lev;
for(int a : list.get(node)){
if(a!=parent){
dfs(list,a,node,lev+1);
}
}
}

private static int[] level;

}``````

Path-etic Sums CodeChef Solution in PYPY 3

``````# import pypyjit
# pypyjit.set_param('max_unroll_recursion=-1')
from collections import *
from functools import *
from itertools import *
from heapq import *
import sys,math

N = int(input())
e = [[] for _ in range(N)]
for _ in range(N-1):
u,v = map(int,input().split())
u -= 1
v -= 1
e[u].append(v)
e[v].append(u)
A = [-1]*N
v = deque()
A[0]=1
v.append(0)
while v:
x = v.popleft()
if A[x]==1:
res = 2
else:
res = 1
for ix in e[x]:
if A[ix]!=-1:
continue
A[ix] = res
v.append(ix)
print(*A)

for _ in range(int(input())):

Path-etic Sums CodeChef Solution in PYTH

``````'''input
2
7
1 2
4 6
3 5
1 4
7 5
5 1
3
1 2
2 3

'''

from bisect import bisect_right as bl
from random import randint as R
RI = lambda : [int(_x) for _x in raw_input().split()]

for _ in range(input()):
n = input()
C = [[] for i in range(n)]
for i in range(n-1):
a,b = RI()
a-=1
b-=1
C[a].append(b)
C[b].append(a)
V = [0]*n
def dfs(root=0,par = -1,h=0):

V[root] = 1+h
for i in C[root]:
if i != par:
dfs(i,root,h^1)
dfs()

for i in range(n):
print V[i],
print

``````

Path-etic Sums CodeChef Solution in C#

``````using System;
using System.Collections.Generic;
using System.Linq;

public class Test
{
public static void Main()
{
while(t-- > 0)
{
var neighbors = new List<int>[n+1];
for(int i = 0; i < neighbors.Length; i++)
{
neighbors[i] = new List<int>();
}
for (int i = 0; i < n-1; i++)
{
var a = edge[0];
var b = edge[1];
}
var divisor = 103;
var queue = new Queue<Tuple<int, int>>();
queue.Enqueue(Tuple.Create(1, 0));
var values = new int[n+1];
var visited = new bool[n + 1];
values[1] = divisor;
while (queue.Any())
{
var current = queue.Dequeue();
var id = current.Item1;
var dist = current.Item2;
foreach(var neighbor in neighbors[id])
{
if (visited[neighbor])
continue;
visited[neighbor] = true;
values[neighbor] = divisor + ((dist + 1) % 2);
queue.Enqueue(Tuple.Create(neighbor, dist + 1));
}
}
Console.WriteLine(string.Join(" ", values.Skip(1).Take(n)));
}
}
}``````

Path-etic Sums CodeChef Solution in GO

``````package main

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

func main() {

var buf bytes.Buffer
for tc > 0 {
tc--
E := make([][]int, n-1)
for i := 0; i < n-1; i++ {
}
res := solve(n, E)
for i := 0; i < n; i++ {
buf.WriteString(fmt.Sprintf("%d ", res[i]))
}
buf.WriteByte('\n')
}
fmt.Print(buf.String())
}

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
}

return
}

a, b = res[0], res[1]
return
}

a, b, c = res[0], res[1], res[2]
return
}

res := make([]int, n)
x := 0
for i := 0; i < n; i++ {
for x < len(bs) && (bs[x] < '0' || bs[x] > '9') && bs[x] != '-' {
x++
}
}
return res
}

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 solve(n int, E [][]int) []int {
G := getGraph(n, E)
color := make([]int, n)
var dfs func(p, u int)

dfs = func(p, u int) {
for _, v := range G[u] {
if p == v {
continue
}
color[v] = 1 - color[u]
dfs(u, v)
}
}

dfs(-1, 0)

res := make([]int, n)

for i := 0; i < n; i++ {
if color[i] == 1 {
res[i] = 2
} else {
res[i] = 3
}
}

return res
}

func getGraph(n int, E [][]int) [][]int {
degree := make([]int, n)
for _, e := range E {
u, v := e[0]-1, e[1]-1
degree[u]++
degree[v]++
}
for i := 0; i < n; i++ {
}

for _, e := range E {
u, v := e[0]-1, e[1]-1
}

}``````
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