Submission #1313777

#	Time	Username	Problem	Language	Result	Execution time	Memory
1313777		Nipphitch	Tracks in the Snow (BOI13_tracks)	C++20	2.19 / 100	174 ms	444 KiB

tracks

#include <bits/stdc++.h>
using namespace std;

int n,m;
set <char> s;

signed main()
{
    ios::sync_with_stdio(0);
    cin.tie(0);
    cin >> n >> m;
    for(int i=1;i<=n;i++){
        for(int j=1;j<=m;j++){
            char c;
            cin >> c;
            s.insert(c);
        }
    }
    s.erase('.');
    cout << s.size();
}

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