Submission #1125863

#	Time	Username	Problem	Language	Result	Execution time	Memory
1125863		Agageldi	Tracks in the Snow (BOI13_tracks)	C++20	0 / 100	289 ms	19976 KiB

tracks

/*
ID: agageld1
LANG: C++17
TASK:
*/
#include <bits/stdc++.h>
using namespace std;

#define ll long long
#define N 400005
#define ff first
#define ss second
#define pb push_back
#define sz(s) (int)s.size()
#define rep(c, a, b) for(c = a; c <= b; c++)

//mt19937 rng(chrono::steady_clock::now().time_since_epoch().count());

ll n, m, ans = 0;
char a[5000][5000];
map <char,int> vis;

int main () {
	//freopen("txt.in","r",stdin);
	//freopen("txt.out","w",stdout);
	ios::sync_with_stdio(0);cin.tie(0);
	cin >> n >> m;
	for(int i= 1;i<=n;i++) {
		for(int j =1;j<=m;j++) {
			cin >> a[i][j];
			if(!vis[a[i][j]]) ans++;
			vis[a[i][j]] = 1;
		}
	}
	cout << ans - 1 << '\n';
}

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