Submission #1120248

#	Time	Username	Problem	Language	Result	Execution time	Memory
1120248		vjudge1	Tracks in the Snow (BOI13_tracks)	C++17	2.19 / 100	192 ms	2636 KiB

tracks

#include <bits/stdc++.h>
#define all(v) v.begin(), v.end()
#define int long long
using namespace std;

const int mod = 1e9 + 7;
int n, m;

signed main()
{
    ios_base::sync_with_stdio(0);
    cin.tie(0);
    
    cin >> n >> m;
    bool l[26] = {0};
    for(int i = 0; i < n; i++) 
    {   
        for(int j = 0; j < m; j++)
        {
            char x;
            cin >> x;
            if(x != '.') l[x - 'A'] = 1;
        }
    }
    int ans = 0;
    for(int i : l) ans += i;
    cout << ans;
}  

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