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# Tyre problem CodeChef Solution

## Problem – Tyre problem CodeChef Solution

There are N bikes and M cars on the road.

• Each bike has 2 tyres.
• Each car has 4 tyres.

Find the total number of tyres on the road.

### Input Format

• The first line will contain T – the number of test cases. Then the test cases follow.
• The first and only line of each test case contains two integers N,M.

### Output Format

For each test case, output in a single line, the total number of tyres on the road.

• 1≤T≤1000
• 0≤N,M≤100

### Sample 1:

``````Input: 2
2 1
3 0
Output: 8
6``````

### Explanation:

Test Case 1: There are 2 bikes and 1 car. Each bike has 2 tyres, so there are 2⋅2=4 bike tyres. Similarly, each car has 4 tyres, so there are 1⋅4=4 car tyres. Adding the tyres of all vehicles, we get 4+4=8 tyres in total.

Test Case 2: There are 3 bikes and 0 cars. Each bike has 2 tyres, so there are 3⋅2=6 bike tyres. There are no cars, so there are 0⋅4=0 car tyres. Adding the tyres of all vehicles, we get 6+0=6 tyres in total.

### Tyre problem CodeChef Solution in C++17

``````#include<bits/stdc++.h>
using namespace std;
#define int long long int
int32_t main()
{
int t;
cin>>t;
while(t--)
{
int x,y;
cin>>x>>y;
cout<<2*x+4*y<<endl;
}
}``````

### Tyre problem CodeChef Solution in Java

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

class Codechef
{
public static void main (String[] args) throws java.lang.Exception
{
Scanner sc = new Scanner(System.in);
int T = sc.nextInt();
for(int i = 0;i<T;i++){
int N = sc.nextInt();
int M = sc.nextInt();

System.out.println(N*2+M*4);

}
}
}
``````

### Tyre problem CodeChef Solution in Pyth 3

``````n=int(input())
for i in range(n):
a,b=list(map(int,input().split()))
print(a*2+b*4)``````
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