Submission #933082

#	Time	Username	Problem	Language	Result	Execution time	Memory
933082		vjudge1	Collecting Mushrooms (NOI18_collectmushrooms)	C++14	0 / 100	2085 ms	604 KiB

mushrooms

#include <bits/stdc++.h>
#define faster ios_base::sync_with_stdio(false);cin.tie(NULL);
#define fi first
#define se second
#define pb push_back
#define task "hetcuu"
using namespace std;
using ll = long long;
using ld = long double;
const ll maxN = 100;
int r,c,d,k,ans = 0;
char a[maxN][maxN];
int pre[maxN][maxN];
int get(int i,int j){
    return pre[i][j] + pre[i-1][j] + pre[i][j-1] - pre[i-1][j-1];
}
int main(){
	cin >> r >> c >> d >> k;
	for(int i = 1; i <= r; i++){
        for(int j = 1;j <=c;++j){
            cin >> a[i][j];
        }
	}

	for(int i = 1; i <= r; i++){
		for(int j = 1; j <= c; j++){
			if(a[i][j] == 'S'){
				int ra = max(1,i-d);
				int ca = max(1,j-d);
				int rb = min(r,i+d);
				int cb = min(c,j+d);
				pre[ra][ca]++;
				pre[ra][cb+1]--;
				pre[rb+1][ca]--;
				pre[rb+1][cb+1]++;
			}
		}
	}
	for(int i = 1; i <= r; i++){
		for(int j = 1; j <= c; j++){
			pre[i][j] = get(i,j);
		}
	}
	for(int i = 1; i <= r; i++){
		for(int j = 1; j <= c; j++){
			if(pre[i][j] >= k && a[i][j] == 'M')ans++;
		}
	}
	cout << ans;
}

• Subtask 1: 0 / 9
• Subtask 2: 0 / 10
• Subtask 3: 0 / 18
• Subtask 4: 0 / 23
• Subtask 5: 0 / 19
• Subtask 6: 0 / 21