146A Codeforces - Lucky Ticket

146A Codeforces - Lucky Ticket

Link : http://codeforces.com/problemset/problem/146/A

Solution in c++

#include <bits/stdc++.h>

using namespace std;

int sz,h1,h2;

string inp;

int main()

{

    if(4==7)

    {

        en:

            cout<<"NO";

            return 0;

    }

    cin>>sz>>inp;

    for(int i=0;i<sz;i++)

    {

        if(inp[i]!='4' && inp[i]!='7')goto en;

        if(i<sz/2)h1+=inp[i];

        else h2+=inp[i];

    }

    if(h1!=h2)goto en;

    cout<<"YES";

    return 0;

}

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About Mohamed Sobhi

My name is Mo.Sobhy ,I study at School excelling high school in Ain Shams ,Cairo
My hobbies is programming ,and web development ,playing chess and writing horror stories.