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Submission #209871

# Submission time Handle Problem Language Result Execution time Memory
209871 2020-03-15T19:15:42 Z sevlll Bitaro the Brave (JOI19_ho_t1) C++14
100 / 100
 380 ms 160184 KB 
#include <bits/stdc++.h>

using namespace std;

#define int long long
#define pb push_back
#define ld long double

signed main() {
    ios_base::sync_with_stdio(false);
    cin.tie(nullptr);
    cout.tie(nullptr);
    int n, m;
    cin >> n >> m;
    vector<string> A(n);
    for (int i = 0; i < n; i++) cin >> A[i];
    int ans = 0;
    vector<vector<int>> suf_o(n + 1, vector<int>(m+1));
    vector<vector<int>> stolb_i(n + 1, vector<int>(m+1));
    for (int i = 0; i < n; i++) {
        suf_o[i][m-1] = (A[i][m-1] == 'O');
        for (int j = m - 2; j >= 0; j--) {
            suf_o[i][j] = (A[i][j]=='O') + suf_o[i][j+1];
        }
    }
    for (int j = 0; j < m; j++) {
        stolb_i[n-1][j] = (A[n-1][j] == 'I');
        for (int i = n - 2; i >= 0; i--) {
            stolb_i[i][j] = stolb_i[i+1][j] + (A[i][j] == 'I');
        }
    }
    for (int i = 0; i < n; i++) {
        for (int j = 0; j < m; j++) {
            if (A[i][j] == 'J') {
                ans += suf_o[i][j+1] * stolb_i[i+1][j];
            }
        }
    }
    cout << ans;
}

Subtask #1
20.0 / 20.0

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

Subtask #2
30.0 / 30.0

# Verdict Execution time Memory Grader output
1 Correct 5 ms 376 KB Output is correct
2 Correct 5 ms 376 KB Output is correct
3 Correct 5 ms 376 KB Output is correct
4 Correct 5 ms 376 KB Output is correct
5 Correct 5 ms 504 KB Output is correct
6 Correct 5 ms 504 KB Output is correct
7 Correct 5 ms 504 KB Output is correct
8 Correct 5 ms 504 KB Output is correct
9 Correct 5 ms 504 KB Output is correct
10 Correct 5 ms 504 KB Output is correct
11 Correct 5 ms 504 KB Output is correct
12 Correct 5 ms 504 KB Output is correct
13 Correct 5 ms 376 KB Output is correct
14 Correct 9 ms 3832 KB Output is correct
15 Correct 6 ms 504 KB Output is correct
16 Correct 7 ms 2680 KB Output is correct
17 Correct 5 ms 376 KB Output is correct
18 Correct 10 ms 4748 KB Output is correct
19 Correct 10 ms 4600 KB Output is correct
20 Correct 11 ms 4728 KB Output is correct
21 Correct 10 ms 4856 KB Output is correct
22 Correct 9 ms 4600 KB Output is correct
23 Correct 10 ms 4728 KB Output is correct
24 Correct 12 ms 4760 KB Output is correct
25 Correct 9 ms 4600 KB Output is correct
26 Correct 9 ms 4728 KB Output is correct

Subtask #3
50.0 / 50.0

# Verdict Execution time Memory Grader output
1 Correct 5 ms 376 KB Output is correct
2 Correct 5 ms 376 KB Output is correct
3 Correct 5 ms 376 KB Output is correct
4 Correct 5 ms 376 KB Output is correct
5 Correct 5 ms 504 KB Output is correct
6 Correct 5 ms 504 KB Output is correct
7 Correct 5 ms 504 KB Output is correct
8 Correct 5 ms 504 KB Output is correct
9 Correct 5 ms 504 KB Output is correct
10 Correct 5 ms 504 KB Output is correct
11 Correct 5 ms 504 KB Output is correct
12 Correct 5 ms 504 KB Output is correct
13 Correct 5 ms 376 KB Output is correct
14 Correct 9 ms 3832 KB Output is correct
15 Correct 6 ms 504 KB Output is correct
16 Correct 7 ms 2680 KB Output is correct
17 Correct 5 ms 376 KB Output is correct
18 Correct 10 ms 4748 KB Output is correct
19 Correct 10 ms 4600 KB Output is correct
20 Correct 11 ms 4728 KB Output is correct
21 Correct 10 ms 4856 KB Output is correct
22 Correct 9 ms 4600 KB Output is correct
23 Correct 10 ms 4728 KB Output is correct
24 Correct 12 ms 4760 KB Output is correct
25 Correct 9 ms 4600 KB Output is correct
26 Correct 9 ms 4728 KB Output is correct
27 Correct 321 ms 151288 KB Output is correct
28 Correct 6 ms 1144 KB Output is correct
29 Correct 18 ms 11896 KB Output is correct
30 Correct 5 ms 760 KB Output is correct
31 Correct 243 ms 111224 KB Output is correct
32 Correct 331 ms 158968 KB Output is correct
33 Correct 335 ms 159608 KB Output is correct
34 Correct 283 ms 129016 KB Output is correct
35 Correct 333 ms 158968 KB Output is correct
36 Correct 318 ms 159608 KB Output is correct
37 Correct 380 ms 160184 KB Output is correct
38 Correct 223 ms 110328 KB Output is correct
39 Correct 220 ms 110840 KB Output is correct