Submission #421328

#	Time	Username	Problem	Language	Result	Execution time	Memory
421328		ioi	Tracks in the Snow (BOI13_tracks)	C++14	2.19 / 100	1125 ms	18120 KiB

tracks

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


int h , w ;
char arr[4010][4010];

int main(){

    cin >> h >> w ;

    map<char , int > mp ;


    for(int i = 0 ; i < h ; i ++)
        for(int j = 0 ;j < w ; j ++){
            cin >> arr[i][j];
            mp[arr[i][j] ]++;
        }


    cout << mp.size() - (mp['.' ] ? 1 : 0) ;

}

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