oj.uz

Submission #141282

# Submission time Handle Problem Language Result Execution time Memory
141282 2019-08-07T10:00:08 Z meatrow Collecting Mushrooms (NOI18_collectmushrooms) C++17
100 / 100
 29 ms 11624 KB 
//#pragma GCC optimize("O3")
//#pragma GCC target("sse,sse2,sse3,ssse3,sse4,popcnt,abm,mmx,tune=native")
//#pragma GCC optimize ("unroll-loops")
#include <bits/stdc++.h>

using namespace std;

using ll = long long;
using ld = long double;

vector<vector<int>> f, s;
int r, c, d, k;

void add(int x, int y) {
    int x1 = max(1, x - d);
    int y1 = max(1, y - d);
    int x2 = x + d + 1;
    int y2 = y + d + 1;
    f[x1][y1]++;
    if (y2 <= c) {
        f[x1][y2]--;
    }
    if (x2 <= r) {
        f[x2][y1]--;
    }
    if (x2 <= r && y2 <= c) {
        f[x2][y2]++;
    }
}

int main() {
    ios::sync_with_stdio(false);
    cin.tie(nullptr);
    cout.tie(nullptr);
    cin >> r >> c >> d >> k;
    vector<vector<char>> field(r + 1, vector<char>(c + 1));
    f.assign(r + 1, vector<int>(c + 1, 0));
    s.assign(r + 1, vector<int>(c + 1, 0));
    for (int i = 1; i <= r; i++) {
        for (int j = 1; j <= c; j++) {
            cin >> field[i][j];
            if (field[i][j] == 'S') {
                add(i, j);
            } 
        }
    }
    int ans = 0;
    for (int i = 1; i <= r; i++) {
        for (int j = 1; j <= c; j++) {
            s[i][j] = s[i - 1][j] + s[i][j - 1] - s[i - 1][j - 1] + f[i][j];
            if (field[i][j] == 'M' && s[i][j] >= k) {
                ans++;
            }
        }
    }
    cout << ans;
    return 0;
}

Subtask #1
9.0 / 9.0

# Verdict Execution time Memory Grader output
1 Correct 2 ms 376 KB Output is correct
2 Correct 2 ms 376 KB Output is correct
3 Correct 2 ms 504 KB Output is correct
4 Correct 2 ms 376 KB Output is correct
5 Correct 2 ms 376 KB Output is correct

Subtask #2
10.0 / 10.0

# Verdict Execution time Memory Grader output
1 Correct 2 ms 376 KB Output is correct
2 Correct 2 ms 376 KB Output is correct
3 Correct 2 ms 504 KB Output is correct
4 Correct 2 ms 376 KB Output is correct
5 Correct 2 ms 376 KB Output is correct
6 Correct 2 ms 376 KB Output is correct
7 Correct 2 ms 376 KB Output is correct
8 Correct 2 ms 376 KB Output is correct
9 Correct 2 ms 376 KB Output is correct
10 Correct 2 ms 376 KB Output is correct

Subtask #3
18.0 / 18.0

# Verdict Execution time Memory Grader output
1 Correct 2 ms 380 KB Output is correct
2 Correct 2 ms 376 KB Output is correct
3 Correct 2 ms 504 KB Output is correct
4 Correct 2 ms 376 KB Output is correct
5 Correct 2 ms 376 KB Output is correct

Subtask #4
23.0 / 23.0

# Verdict Execution time Memory Grader output
1 Correct 7 ms 2296 KB Output is correct
2 Correct 8 ms 2320 KB Output is correct
3 Correct 9 ms 2808 KB Output is correct
4 Correct 8 ms 2424 KB Output is correct
5 Correct 8 ms 2552 KB Output is correct

Subtask #5
19.0 / 19.0

# Verdict Execution time Memory Grader output
1 Correct 29 ms 11620 KB Output is correct
2 Correct 26 ms 11624 KB Output is correct
3 Correct 26 ms 11624 KB Output is correct
4 Correct 27 ms 11108 KB Output is correct
5 Correct 25 ms 11596 KB Output is correct

Subtask #6
21.0 / 21.0

# Verdict Execution time Memory Grader output
1 Correct 2 ms 376 KB Output is correct
2 Correct 2 ms 376 KB Output is correct
3 Correct 2 ms 504 KB Output is correct
4 Correct 2 ms 376 KB Output is correct
5 Correct 2 ms 376 KB Output is correct
6 Correct 2 ms 376 KB Output is correct
7 Correct 2 ms 376 KB Output is correct
8 Correct 2 ms 376 KB Output is correct
9 Correct 2 ms 376 KB Output is correct
10 Correct 2 ms 376 KB Output is correct
11 Correct 2 ms 380 KB Output is correct
12 Correct 2 ms 376 KB Output is correct
13 Correct 2 ms 504 KB Output is correct
14 Correct 2 ms 376 KB Output is correct
15 Correct 2 ms 376 KB Output is correct
16 Correct 7 ms 2296 KB Output is correct
17 Correct 8 ms 2320 KB Output is correct
18 Correct 9 ms 2808 KB Output is correct
19 Correct 8 ms 2424 KB Output is correct
20 Correct 8 ms 2552 KB Output is correct
21 Correct 29 ms 11620 KB Output is correct
22 Correct 26 ms 11624 KB Output is correct
23 Correct 26 ms 11624 KB Output is correct
24 Correct 27 ms 11108 KB Output is correct
25 Correct 25 ms 11596 KB Output is correct
26 Correct 26 ms 7800 KB Output is correct
27 Correct 17 ms 5240 KB Output is correct
28 Correct 19 ms 5256 KB Output is correct
29 Correct 22 ms 5368 KB Output is correct
30 Correct 26 ms 7160 KB Output is correct