Two string - c++ solution

Twostring1.cpp

#include <bits/stdc++.h>

using namespace std;

namespace stuff {
typedef long long ll;

void solve(int test_num) {
  int cnt[2][26];
  memset(cnt, 0, sizeof(cnt));
  for (int i = 0; i < 2; i++) {
    string str;
    cin >> str;
    for (const char& c : str)
      cnt[i][c - 'a'] = 1;
  }
  for (int c = 0; c < 26; c++)
    if (cnt[0][c] + cnt[1][c] == 2) {
      cout << "YES\n";
      return;
    }
  cout << "NO\n";
}

void solve() {
#ifdef AZN
  freopen("input.txt", "r", stdin);
  freopen("output.txt", "w", stdout);
//freopen("azn.txt", "w", stderr);
  double start_t = clock();
#endif
  ios::sync_with_stdio(false);
  cin.tie(NULL);
  int T = 1;
  cin >> T;
  for (int t = 1; t <= T; t++)
    solve(t);
#ifdef AZN
  pln("Took:", (clock() - start_t) / CLOCKS_PER_SEC);
#endif
}
}

int main() {
  stuff::solve();
  return 0;
}