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Submission #557698

# Submission time Handle Problem Language Result Execution time Memory
557698 2022-05-05T20:06:24 Z ljuba Bitaro the Brave (JOI19_ho_t1) C++17
100 / 100
 236 ms 89640 KB 
#include <bits/stdc++.h>

using namespace std;

using ll = long long;

int main() {
    ios::sync_with_stdio(0);
    cin.tie(0);

    int n, m;
    cin >> n >> m;
    vector<string> mat(n);
    for(auto &z : mat) cin >> z;

    vector<vector<int>> ig(n, vector<int>(m, 0));
    vector<vector<int>> o(n, vector<int>(m, 0));

    for(int i = n-1; i >= 0; --i) {
        for(int j = 0; j < m; ++j) {
            ig[i][j] = (mat[i][j] == 'I');

            if(i + 1 < n) {
                ig[i][j] += ig[i+1][j];
            }
        }
    }

    for(int j = m-1; j >= 0; --j) {
        for(int i = 0; i < n; ++i) {
            o[i][j] = (mat[i][j] == 'O');

            if(j + 1 < m) {
                o[i][j] += o[i][j+1];
            }
        }
    }

    ll ans = 0;

    for(int i = 0; i + 1 < n; ++i) {
        for(int j = 0; j + 1 < m; ++j) {
            if(mat[i][j] != 'J') continue;
            ans += ig[i+1][j] * o[i][j+1];
        }
    }

    cout << ans << '\n';
}

Subtask #1
20.0 / 20.0

# Verdict Execution time Memory Grader output
1 Correct 0 ms 212 KB Output is correct
2 Correct 0 ms 212 KB Output is correct
3 Correct 0 ms 328 KB Output is correct
4 Correct 0 ms 212 KB Output is correct
5 Correct 1 ms 340 KB Output is correct
6 Correct 1 ms 320 KB Output is correct
7 Correct 1 ms 328 KB Output is correct
8 Correct 1 ms 340 KB Output is correct
9 Correct 1 ms 324 KB Output is correct
10 Correct 1 ms 340 KB Output is correct
11 Correct 1 ms 340 KB Output is correct
12 Correct 1 ms 340 KB Output is correct
13 Correct 1 ms 340 KB Output is correct

Subtask #2
30.0 / 30.0

# Verdict Execution time Memory Grader output
1 Correct 0 ms 212 KB Output is correct
2 Correct 0 ms 212 KB Output is correct
3 Correct 0 ms 328 KB Output is correct
4 Correct 0 ms 212 KB Output is correct
5 Correct 1 ms 340 KB Output is correct
6 Correct 1 ms 320 KB Output is correct
7 Correct 1 ms 328 KB Output is correct
8 Correct 1 ms 340 KB Output is correct
9 Correct 1 ms 324 KB Output is correct
10 Correct 1 ms 340 KB Output is correct
11 Correct 1 ms 340 KB Output is correct
12 Correct 1 ms 340 KB Output is correct
13 Correct 1 ms 340 KB Output is correct
14 Correct 3 ms 2248 KB Output is correct
15 Correct 1 ms 340 KB Output is correct
16 Correct 2 ms 1620 KB Output is correct
17 Correct 1 ms 428 KB Output is correct
18 Correct 5 ms 2772 KB Output is correct
19 Correct 3 ms 2640 KB Output is correct
20 Correct 3 ms 2772 KB Output is correct
21 Correct 4 ms 2764 KB Output is correct
22 Correct 4 ms 2740 KB Output is correct
23 Correct 3 ms 2772 KB Output is correct
24 Correct 4 ms 2772 KB Output is correct
25 Correct 3 ms 2644 KB Output is correct
26 Correct 3 ms 2772 KB Output is correct

Subtask #3
50.0 / 50.0

# Verdict Execution time Memory Grader output
1 Correct 0 ms 212 KB Output is correct
2 Correct 0 ms 212 KB Output is correct
3 Correct 0 ms 328 KB Output is correct
4 Correct 0 ms 212 KB Output is correct
5 Correct 1 ms 340 KB Output is correct
6 Correct 1 ms 320 KB Output is correct
7 Correct 1 ms 328 KB Output is correct
8 Correct 1 ms 340 KB Output is correct
9 Correct 1 ms 324 KB Output is correct
10 Correct 1 ms 340 KB Output is correct
11 Correct 1 ms 340 KB Output is correct
12 Correct 1 ms 340 KB Output is correct
13 Correct 1 ms 340 KB Output is correct
14 Correct 3 ms 2248 KB Output is correct
15 Correct 1 ms 340 KB Output is correct
16 Correct 2 ms 1620 KB Output is correct
17 Correct 1 ms 428 KB Output is correct
18 Correct 5 ms 2772 KB Output is correct
19 Correct 3 ms 2640 KB Output is correct
20 Correct 3 ms 2772 KB Output is correct
21 Correct 4 ms 2764 KB Output is correct
22 Correct 4 ms 2740 KB Output is correct
23 Correct 3 ms 2772 KB Output is correct
24 Correct 4 ms 2772 KB Output is correct
25 Correct 3 ms 2644 KB Output is correct
26 Correct 3 ms 2772 KB Output is correct
27 Correct 213 ms 84484 KB Output is correct
28 Correct 1 ms 724 KB Output is correct
29 Correct 8 ms 6740 KB Output is correct
30 Correct 1 ms 468 KB Output is correct
31 Correct 151 ms 62340 KB Output is correct
32 Correct 195 ms 89100 KB Output is correct
33 Correct 194 ms 89420 KB Output is correct
34 Correct 173 ms 72208 KB Output is correct
35 Correct 202 ms 88984 KB Output is correct
36 Correct 198 ms 89312 KB Output is correct
37 Correct 236 ms 89640 KB Output is correct
38 Correct 131 ms 61784 KB Output is correct
39 Correct 126 ms 61948 KB Output is correct