제출 #346447

#	제출 시각	아이디	문제	언어	결과	실행 시간	메모리
346447		ahmet	Tracks in the Snow (BOI13_tracks)	C++14	0 / 100	386 ms	18028 KiB

tracks

#include <bits/stdc++.h>
using namespace std;
#define ll long long
#define ref(a,b,c) for(int (a)=(b);(a)<=(c);++(a))
#define rep(a,b) for(int (a)=0;(a)<(b);++(a))
#define pb push_back
#define mp make_pair
const int mx=4500;
int n,m;
char a[mx][mx];
int main(){
	ios_base::sync_with_stdio(0);cin.tie(0);
	cin >> n >> m;
	set <char> s;
	for(int i=1;i<=n;++i){
		for(int j=1;j<=m;++j){
			cin >> a[i][j];
			s.insert(a[i][j]);
		}
	}
	cout << s.size()-1 << endl;
}

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