Peli

input/code.cpp: In function 'int main()':
input/code.cpp:16:10: warning: array subscript has type 'char' [-Wchar-subscripts]
       z[c] = 1;
          ^

#include <bits/stdc++.h>
using namespace std;
int main() {
  ios::sync_with_stdio(0);
  cin.tie(0);
  int n, k;
  cin >> n >> k;
  if (k < 3) {
    cout << 0 << endl;
  } else {
    string s;
    cin >> s;
    bool z[128] {};
    int ans = 0;
    for (char c : s) {
      z[c] = 1;
      if (z['A'] && z['B'] && z['C']) {
        ans++;
        z['A'] = z['B'] = z['C'] = 0;
      }
    }
    cout << ans << endl;
  }
}

Test 1

Group: 1, 2, 3

Verdict: ACCEPTED

Test 2

Group: 2, 3

Verdict: WRONG ANSWER

Test 3

Group: 3

Verdict: WRONG ANSWER

Test 4

Group: 1, 2, 3

Verdict: ACCEPTED

Test 5

Group: 1, 2, 3

Verdict: ACCEPTED