Submission #1024247

#	Time	Username	Problem	Language	Result	Execution time	Memory
1024247		Youssef_Elwazzan	Tracks in the Snow (BOI13_tracks)	C++17	2.19 / 100	206 ms	31712 KiB

tracks

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

const int MXN = 4000, INF = 1e9 + 5;
const int MOD = 1e9 + 7;

char arr[MXN][MXN];

void solve(){
    int n, m; cin >> n >> m;
    map<char, int> mp;
    for(int i = 0; i < n; i++){
        for(int j = 0; j < m; j++){
            cin >> arr[i][j];
            // cerr << arr[i][j];
            if(arr[i][j] != '.') mp[arr[i][j]]++;
        }
        // cerr << endl;
    }

    cout << mp.size() << endl;
}

int main(){
    ios_base::sync_with_stdio(false);
    cin.tie(nullptr);
    cout.tie(0);
    cerr.tie(0);

    // freopen("filename.in", "r", stdin);
    // freopen("filename.out", "w", stdout);

    int TC = 1;
    // cin >> TC;
    while(TC--) solve();
    return 0;
}

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