Submission #1294838

#	Time	Username	Problem	Language	Result	Execution time	Memory
1294838		Johan	Tracks in the Snow (BOI13_tracks)	C++20	2.19 / 100	555 ms	584 KiB

tracks

#include <bits/stdc++.h>
using namespace std;
#define int long long
signed main(){
  int n, m;
  cin >> n >> m;
  bool ok = false;
  set < char > st;
  for(int i = 1; i <= n; i++){
    for(int j = 1; j <= m; j++){
      char c;
      cin >> c;
      ok |= (c == '.');
      st.insert(c);
    }
  }
  // for(auto i : st)cout << i << ' ';cout << endl;
  cout << st.size() - ok << endl;
}

• Subtask 1: 0 / 30
• Subtask 2: 2.1875 / 70