oj.uz

Submission #546929

# Submission time Handle Problem Language Result Execution time Memory
546929 2022-04-09T00:34:56 Z Ahmed57 Collecting Mushrooms (NOI18_collectmushrooms) C++14
100 / 100
 24 ms 26736 KB 
#include <bits/stdc++.h>

using namespace std;

int main() {
	ios_base::sync_with_stdio(0);
	cin.tie(0);
	int n,m,d,k;
	cin>>n>>m>>d>>k;
	char arr[n+5][m+5];
	int pre[n+5][m+5];
    int fores[n+5][m+5];
    memset(pre,0,sizeof pre);
    memset(fores,0,sizeof fores);
	for(int i=1;i<=n;i++) {
		for(int j=1;j<=m;j++) {
			char a;
			cin>>a;
			arr[i][j] = a;
			if(a=='S'){
                fores[i][j]++;
			}
		}
	}
	pre[1][1] = fores[1][1];
	for(int i = 2;i<=m;i++)
        pre[1][i]=pre[1][i-1]+fores[1][i];
    for(int i = 2;i<=n;i++)
        pre[i][1]=pre[i-1][1]+fores[i][1];
    for(int i=2;i<=n;i++){
        for(int j=2;j<=m;j++){
            pre[i][j]=pre[i-1][j]+pre[i][j-1]-pre[i-1][j-1]+fores[i][j];
        }
    }
	int ans=0;
	for(int i = 1;i<=n;i++){
        for(int j = 1;j<=m;j++){
            if(arr[i][j]=='M'){
            long long x1 = max(i-d,1) , y1 = max(j-d,1) , x2 = min(i+d,n) , y2 = min(j+d,m);
            long long sum = pre[x2][y2];
            if(x1>1)sum-=pre[x1-1][y2];
            if(y1>1)sum-=pre[x2][y1-1];
            if(x1>1&&y1>1)sum+=pre[x1-1][y1-1];
            if(sum>=k)ans++;
            }
	    }
	}
	cout<<ans;
}

Subtask #1
9.0 / 9.0

# Verdict Execution time Memory Grader output
1 Correct 0 ms 212 KB Output is correct
2 Correct 1 ms 340 KB Output is correct
3 Correct 1 ms 340 KB Output is correct
4 Correct 0 ms 340 KB Output is correct
5 Correct 0 ms 340 KB Output is correct

Subtask #2
10.0 / 10.0

# Verdict Execution time Memory Grader output
1 Correct 0 ms 212 KB Output is correct
2 Correct 1 ms 340 KB Output is correct
3 Correct 1 ms 340 KB Output is correct
4 Correct 0 ms 340 KB Output is correct
5 Correct 0 ms 340 KB Output is correct
6 Correct 0 ms 212 KB Output is correct
7 Correct 0 ms 212 KB Output is correct
8 Correct 1 ms 340 KB Output is correct
9 Correct 0 ms 340 KB Output is correct
10 Correct 0 ms 212 KB Output is correct

Subtask #3
18.0 / 18.0

# Verdict Execution time Memory Grader output
1 Correct 0 ms 212 KB Output is correct
2 Correct 1 ms 340 KB Output is correct
3 Correct 1 ms 340 KB Output is correct
4 Correct 0 ms 212 KB Output is correct
5 Correct 1 ms 340 KB Output is correct

Subtask #4
23.0 / 23.0

# Verdict Execution time Memory Grader output
1 Correct 5 ms 2088 KB Output is correct
2 Correct 5 ms 2132 KB Output is correct
3 Correct 6 ms 2516 KB Output is correct
4 Correct 5 ms 2168 KB Output is correct
5 Correct 5 ms 2260 KB Output is correct

Subtask #5
19.0 / 19.0

# Verdict Execution time Memory Grader output
1 Correct 22 ms 26708 KB Output is correct
2 Correct 21 ms 26736 KB Output is correct
3 Correct 21 ms 26632 KB Output is correct
4 Correct 23 ms 26728 KB Output is correct
5 Correct 24 ms 26708 KB Output is correct

Subtask #6
21.0 / 21.0

# Verdict Execution time Memory Grader output
1 Correct 0 ms 212 KB Output is correct
2 Correct 1 ms 340 KB Output is correct
3 Correct 1 ms 340 KB Output is correct
4 Correct 0 ms 340 KB Output is correct
5 Correct 0 ms 340 KB Output is correct
6 Correct 0 ms 212 KB Output is correct
7 Correct 0 ms 212 KB Output is correct
8 Correct 1 ms 340 KB Output is correct
9 Correct 0 ms 340 KB Output is correct
10 Correct 0 ms 212 KB Output is correct
11 Correct 0 ms 212 KB Output is correct
12 Correct 1 ms 340 KB Output is correct
13 Correct 1 ms 340 KB Output is correct
14 Correct 0 ms 212 KB Output is correct
15 Correct 1 ms 340 KB Output is correct
16 Correct 5 ms 2088 KB Output is correct
17 Correct 5 ms 2132 KB Output is correct
18 Correct 6 ms 2516 KB Output is correct
19 Correct 5 ms 2168 KB Output is correct
20 Correct 5 ms 2260 KB Output is correct
21 Correct 22 ms 26708 KB Output is correct
22 Correct 21 ms 26736 KB Output is correct
23 Correct 21 ms 26632 KB Output is correct
24 Correct 23 ms 26728 KB Output is correct
25 Correct 24 ms 26708 KB Output is correct
26 Correct 12 ms 5576 KB Output is correct
27 Correct 13 ms 4820 KB Output is correct
28 Correct 13 ms 5204 KB Output is correct
29 Correct 14 ms 5168 KB Output is correct
30 Correct 16 ms 5312 KB Output is correct