oj.uz

Submission #1006071

# Submission time Handle Problem Language Result Execution time Memory
1006071 2024-06-23T11:01:00 Z kebine Collecting Mushrooms (NOI18_collectmushrooms) C++17
100 / 100
 17 ms 24560 KB 
#include <bits/stdc++.h>
using namespace std;
#define int long long
#define endl "\n"


signed main(){
    ios_base::sync_with_stdio(0); cin.tie(0);

    int n, m, d, s; cin >> n >> m >> d >> s;

    string grid[n + 5];

    for ( int i = 0; i < n; i++) cin >> grid[i];

    int ans[n + 5][m + 5];

    memset ( ans, 0, sizeof(ans));

    for ( int i = 0; i < n; i++){
        for ( int j = 0; j < m; j++){
            if ( grid[i][j] == 'S' ){
                int x1 = max ( 0ll, i - d), x2 = min ( n, i + d);
                int y1 = max ( 0ll, j - d ), y2 = min ( m, j + d);

                ans[x1][y1]++;
                
                if ( y2 + 1 < m ) ans[x1][y2 + 1]--;
                if ( x2 + 1 < n ) ans[x2 + 1][y1]--;
                if ( x2 + 1 < n && y2 + 1 < m ) ans[x2 + 1][y2 + 1]++;
            }
        }
    }

    int cnt = 0;

    for ( int i = 0; i < n; i++){
        for ( int j = 0; j < m; j++){
            if ( i - 1 >= 0 ){
                ans[i][j] += ans[i - 1][j];
            }
            if ( j - 1 >= 0 ){
                ans[i][j] += ans[i][j - 1];
            }
            if ( i - 1 >= 0 && j - 1 >= 0 ){
                ans[i][j] -= ans[i - 1][j - 1];
            }
        }
    }


    for ( int i = 0; i < n; i++){
        for ( int j = 0; j < m; j++){
            if ( grid[i][j] == 'M' ){
                if ( ans[i][j] >= s ) cnt++; 
            }
        }
    }

    cout << cnt << endl;
}

Subtask #1
9.0 / 9.0

# Verdict Execution time Memory Grader output
1 Correct 0 ms 348 KB Output is correct
2 Correct 0 ms 348 KB Output is correct
3 Correct 0 ms 348 KB Output is correct
4 Correct 0 ms 348 KB Output is correct
5 Correct 0 ms 348 KB Output is correct

Subtask #2
10.0 / 10.0

# Verdict Execution time Memory Grader output
1 Correct 0 ms 348 KB Output is correct
2 Correct 0 ms 348 KB Output is correct
3 Correct 0 ms 348 KB Output is correct
4 Correct 0 ms 348 KB Output is correct
5 Correct 0 ms 348 KB Output is correct
6 Correct 0 ms 344 KB Output is correct
7 Correct 0 ms 348 KB Output is correct
8 Correct 1 ms 348 KB Output is correct
9 Correct 0 ms 348 KB Output is correct
10 Correct 0 ms 348 KB Output is correct

Subtask #3
18.0 / 18.0

# Verdict Execution time Memory Grader output
1 Correct 0 ms 348 KB Output is correct
2 Correct 0 ms 348 KB Output is correct
3 Correct 0 ms 344 KB Output is correct
4 Correct 0 ms 348 KB Output is correct
5 Correct 0 ms 348 KB Output is correct

Subtask #4
23.0 / 23.0

# Verdict Execution time Memory Grader output
1 Correct 3 ms 2140 KB Output is correct
2 Correct 2 ms 2276 KB Output is correct
3 Correct 2 ms 2652 KB Output is correct
4 Correct 2 ms 2140 KB Output is correct
5 Correct 2 ms 2392 KB Output is correct

Subtask #5
19.0 / 19.0

# Verdict Execution time Memory Grader output
1 Correct 16 ms 24556 KB Output is correct
2 Correct 15 ms 24560 KB Output is correct
3 Correct 13 ms 24408 KB Output is correct
4 Correct 17 ms 24480 KB Output is correct
5 Correct 15 ms 24304 KB Output is correct

Subtask #6
21.0 / 21.0

# Verdict Execution time Memory Grader output
1 Correct 0 ms 348 KB Output is correct
2 Correct 0 ms 348 KB Output is correct
3 Correct 0 ms 348 KB Output is correct
4 Correct 0 ms 348 KB Output is correct
5 Correct 0 ms 348 KB Output is correct
6 Correct 0 ms 344 KB Output is correct
7 Correct 0 ms 348 KB Output is correct
8 Correct 1 ms 348 KB Output is correct
9 Correct 0 ms 348 KB Output is correct
10 Correct 0 ms 348 KB Output is correct
11 Correct 0 ms 348 KB Output is correct
12 Correct 0 ms 348 KB Output is correct
13 Correct 0 ms 344 KB Output is correct
14 Correct 0 ms 348 KB Output is correct
15 Correct 0 ms 348 KB Output is correct
16 Correct 3 ms 2140 KB Output is correct
17 Correct 2 ms 2276 KB Output is correct
18 Correct 2 ms 2652 KB Output is correct
19 Correct 2 ms 2140 KB Output is correct
20 Correct 2 ms 2392 KB Output is correct
21 Correct 16 ms 24556 KB Output is correct
22 Correct 15 ms 24560 KB Output is correct
23 Correct 13 ms 24408 KB Output is correct
24 Correct 17 ms 24480 KB Output is correct
25 Correct 15 ms 24304 KB Output is correct
26 Correct 11 ms 6748 KB Output is correct
27 Correct 7 ms 4956 KB Output is correct
28 Correct 9 ms 5464 KB Output is correct
29 Correct 5 ms 5212 KB Output is correct
30 Correct 6 ms 5980 KB Output is correct