trener

input/code.cpp: In function 'int main()':
input/code.cpp:12:13: warning: array subscript has type 'char' [-Wchar-subscripts]
     ++z[s[0]];
             ^

#include <iostream>
using namespace std;
int N;

int z[256];

int main(){
  cin >> N;
  for (int i=0; i<N; ++i){
    string s;
    cin >> s;
    ++z[s[0]];
  }
  string ok;
  for (int i='a'; i<='z'; ++i){
    if (z[i]>=5) ok+=i;
  }
  if (ok.size()==0) cout << "PREDAJA\n";
  else cout << ok << "\n";
}

Test 1

Verdict: ACCEPTED

Test 2

Verdict: ACCEPTED

Test 3

Verdict: ACCEPTED

Test 4

Verdict: ACCEPTED

Test 5

Verdict: ACCEPTED

Test 6

Verdict: ACCEPTED

Test 7

Verdict: ACCEPTED

Test 8

Verdict: ACCEPTED

Test 9

Verdict: ACCEPTED

Test 10

Verdict: ACCEPTED

Test 11

Verdict: ACCEPTED

Test 12

Verdict: ACCEPTED

Test 13

Verdict: ACCEPTED

Test 14

Verdict: ACCEPTED

Test 15

Verdict: ACCEPTED