oj.uz

Submission #666747

# Submission time Handle Problem Language Result Execution time Memory
666747 2022-11-29T13:50:40 Z Ai7081 Collecting Mushrooms (NOI18_collectmushrooms) C++17
100 / 100
 19 ms 19580 KB 
#include <bits/stdc++.h>
using namespace std;

int r, c, d, k, out;
string s;
vector<vector<int>> sum;
vector<pair<int, int>> vp;

int main() {
    ios_base::sync_with_stdio(false); cin.tie(0);
    cin >> r >> c >> d >> k;
    sum.assign(r+5, vector<int>(c+5, 0));// = vector<int>(r+5, vector<int>(c+5));
    for (int i=0; i<r; i++) {
        cin >> s;
        for (int j=0; j<c; j++) {
            if (s[j] == 'S') {
                int x0=max(0, i+1-d), x1=min(r+1, i+1+d+1), y0=max(0, j+1-d), y1=min(c+1, j+1+d+1);
                sum[x0][y0]++;
                sum[x0][y1]--;
                sum[x1][y0]--;
                sum[x1][y1]++;
            }
            else if (s[j] == 'M') vp.push_back({i, j});
        }
    }
    // for (int i=0; i<=r+1; i++) {for (int j=0; j<=c+1; j++) cout << sum[i][j] << ' '; cout << endl;}
    for (int i=1; i<=r; i++) sum[i][0]+=sum[i-1][0];
    for (int j=1; j<=c; j++) sum[0][j]+=sum[0][j-1];
    for (int i=1; i<=r; i++) for (int j=1; j<=c; j++) sum[i][j]+=sum[i-1][j]+sum[i][j-1]-sum[i-1][j-1];
    for (auto [x, y] : vp) if (sum[x+1][y+1] >= k) out++;
    // for (int i=1; i<=r; i++) {for (int j=1; j<=c; j++) cout << sum[i][j] << ' '; cout << endl;}
    cout << out;
    return 0;
}

/*
5 5 1 1
....M
.M...
..S..
.S...
...M.

1 8 5 2
SM..MM.S

5 5 2 2
....M
.M...
..S..
.S...
...M.
*/

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 328 KB Output is correct
3 Correct 1 ms 324 KB Output is correct
4 Correct 1 ms 340 KB Output is correct
5 Correct 1 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 328 KB Output is correct
3 Correct 1 ms 324 KB Output is correct
4 Correct 1 ms 340 KB Output is correct
5 Correct 1 ms 340 KB Output is correct
6 Correct 1 ms 212 KB Output is correct
7 Correct 1 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 1 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 316 KB Output is correct
3 Correct 1 ms 596 KB Output is correct
4 Correct 0 ms 340 KB Output is correct
5 Correct 1 ms 452 KB Output is correct

Subtask #4
23.0 / 23.0

# Verdict Execution time Memory Grader output
1 Correct 2 ms 1108 KB Output is correct
2 Correct 2 ms 1356 KB Output is correct
3 Correct 2 ms 1484 KB Output is correct
4 Correct 2 ms 1356 KB Output is correct
5 Correct 2 ms 1364 KB Output is correct

Subtask #5
19.0 / 19.0

# Verdict Execution time Memory Grader output
1 Correct 17 ms 16128 KB Output is correct
2 Correct 19 ms 19492 KB Output is correct
3 Correct 17 ms 19580 KB Output is correct
4 Correct 17 ms 16840 KB Output is correct
5 Correct 18 ms 19468 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 328 KB Output is correct
3 Correct 1 ms 324 KB Output is correct
4 Correct 1 ms 340 KB Output is correct
5 Correct 1 ms 340 KB Output is correct
6 Correct 1 ms 212 KB Output is correct
7 Correct 1 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 1 ms 212 KB Output is correct
11 Correct 0 ms 212 KB Output is correct
12 Correct 1 ms 316 KB Output is correct
13 Correct 1 ms 596 KB Output is correct
14 Correct 0 ms 340 KB Output is correct
15 Correct 1 ms 452 KB Output is correct
16 Correct 2 ms 1108 KB Output is correct
17 Correct 2 ms 1356 KB Output is correct
18 Correct 2 ms 1484 KB Output is correct
19 Correct 2 ms 1356 KB Output is correct
20 Correct 2 ms 1364 KB Output is correct
21 Correct 17 ms 16128 KB Output is correct
22 Correct 19 ms 19492 KB Output is correct
23 Correct 17 ms 19580 KB Output is correct
24 Correct 17 ms 16840 KB Output is correct
25 Correct 18 ms 19468 KB Output is correct
26 Correct 9 ms 5016 KB Output is correct
27 Correct 8 ms 4856 KB Output is correct
28 Correct 7 ms 4040 KB Output is correct
29 Correct 7 ms 4180 KB Output is correct
30 Correct 10 ms 5844 KB Output is correct