Submission #1186700

#	Time	Username	Problem	Language	Result	Execution time	Memory
1186700		pxsit	Tracks in the Snow (BOI13_tracks)	C++20	2.19 / 100	64 ms	17992 KiB

tracks

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

int32_t main(){
    ios::sync_with_stdio(0);
    cin.tie(0);
    int n, m; cin >> n >> m;
    vector<string> grid(n);
    unordered_set<char> s;
    for(int i = 0; i < n; i++){
        cin >> grid[i];
    }
    for(int i = 0; i < n; i++){
        for(char c: grid[i]) 
            if(c!='.') s.insert(c);
    }
    cout << s.size();
}

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