제출 #421328

#제출 시각아이디문제언어결과실행 시간메모리
421328ioiTracks in the Snow (BOI13_tracks)C++14
2.19 / 100
1125 ms18120 KiB
#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) ;

}
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