Two string - C++ solution

Twostring5.cpp

#include <cmath>
#include <cstdio>
#include <vector>
#include <iostream>
#include <algorithm>
#include <cstdlib>
#include <cstring>
using namespace std;

int T;
int cnt[26];
string a, b;

int main() {
    cin >> T;
    while (T--) {
        memset(cnt, 0, sizeof(cnt));
        cin >> a >> b;
        for(int i = 0; i < a.length(); ++i) ++cnt[a[i] - 'a'];
        int ans = 0;
        for(int i = 0; i < b.length(); ++i)
            if (cnt[b[i] - 'a'] > 0) {
                ans = 1;
                break;
            }
        if (ans == 1) cout << "YES" << endl;
        else cout << "NO" << endl;
    }
    return 0;
}