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Submission #467570

# Submission time Handle Problem Language Result Execution time Memory
467570 2021-08-23T17:32:57 Z MN22 Bitaro the Brave (JOI19_ho_t1) C++17
100 / 100
 383 ms 88404 KB 
#pragma GCC optimize("O3")
#include <bits/stdc++.h>

#define F first
#define S second
#define pb push_back
#define ll long long
#define pii pair<int,int>
#define pll pair<ll,ll>
#define endl "\n"
#define yn ynnnnnn

using namespace std;

const int INF = 1000000007;
const int N = 3005;

int dpi[N][N], dpo[N][N];
char a[N][N];
int h, w;

int main() {
    ios_base::sync_with_stdio(false);
    cin.tie(NULL);
    cin >> h >> w;
    for(int i = 1; i <= h; i++) {
        for(int j = 1; j <= w; j++) {
            cin >> a[i][j];
        }
    }
    for(int j = 1; j <= w; j++) {
        for(int i = 1; i <= h; i++) {
            if(a[i][j] == 'I') {
                dpi[i][j] = dpi[i-1][j] + 1;
            } else {
                dpi[i][j] = dpi[i-1][j];
            }
        }
    }
    for(int i = 1; i <= h; i++) {
        for(int j = 1; j <= w; j++) {
            if(a[i][j] == 'O') {
                dpo[i][j] = dpo[i][j-1] + 1;
            } else {
                dpo[i][j] = dpo[i][j-1];
            }
        }
    }
    int ansi, anso;
    ll res = 0;
    for(int i = 1; i <= h; i++) {
        for(int j = 1; j <= w; j++) {
            if(a[i][j] == 'J') {
                ansi = dpi[h][j] - dpi[i-1][j];
                anso = dpo[i][w] - dpo[i][j-1];
                //cout << ansi << " " << anso << endl;
                res += 1ll * ansi * anso;
            }
        }
    }
    cout << res << endl;
    return 0;
}

Subtask #1
20.0 / 20.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 384 KB Output is correct
2 Correct 0 ms 332 KB Output is correct
3 Correct 0 ms 332 KB Output is correct
4 Correct 1 ms 332 KB Output is correct
5 Correct 1 ms 1484 KB Output is correct
6 Correct 1 ms 1484 KB Output is correct
7 Correct 1 ms 1356 KB Output is correct
8 Correct 1 ms 1484 KB Output is correct
9 Correct 1 ms 1484 KB Output is correct
10 Correct 1 ms 1356 KB Output is correct
11 Correct 1 ms 1484 KB Output is correct
12 Correct 1 ms 1484 KB Output is correct
13 Correct 1 ms 1356 KB Output is correct

Subtask #2
30.0 / 30.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 384 KB Output is correct
2 Correct 0 ms 332 KB Output is correct
3 Correct 0 ms 332 KB Output is correct
4 Correct 1 ms 332 KB Output is correct
5 Correct 1 ms 1484 KB Output is correct
6 Correct 1 ms 1484 KB Output is correct
7 Correct 1 ms 1356 KB Output is correct
8 Correct 1 ms 1484 KB Output is correct
9 Correct 1 ms 1484 KB Output is correct
10 Correct 1 ms 1356 KB Output is correct
11 Correct 1 ms 1484 KB Output is correct
12 Correct 1 ms 1484 KB Output is correct
13 Correct 1 ms 1356 KB Output is correct
14 Correct 8 ms 7512 KB Output is correct
15 Correct 3 ms 4940 KB Output is correct
16 Correct 5 ms 4308 KB Output is correct
17 Correct 1 ms 460 KB Output is correct
18 Correct 10 ms 8012 KB Output is correct
19 Correct 9 ms 7876 KB Output is correct
20 Correct 11 ms 7824 KB Output is correct
21 Correct 11 ms 7988 KB Output is correct
22 Correct 11 ms 7884 KB Output is correct
23 Correct 9 ms 7756 KB Output is correct
24 Correct 11 ms 8016 KB Output is correct
25 Correct 9 ms 7884 KB Output is correct
26 Correct 9 ms 7764 KB Output is correct

Subtask #3
50.0 / 50.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 384 KB Output is correct
2 Correct 0 ms 332 KB Output is correct
3 Correct 0 ms 332 KB Output is correct
4 Correct 1 ms 332 KB Output is correct
5 Correct 1 ms 1484 KB Output is correct
6 Correct 1 ms 1484 KB Output is correct
7 Correct 1 ms 1356 KB Output is correct
8 Correct 1 ms 1484 KB Output is correct
9 Correct 1 ms 1484 KB Output is correct
10 Correct 1 ms 1356 KB Output is correct
11 Correct 1 ms 1484 KB Output is correct
12 Correct 1 ms 1484 KB Output is correct
13 Correct 1 ms 1356 KB Output is correct
14 Correct 8 ms 7512 KB Output is correct
15 Correct 3 ms 4940 KB Output is correct
16 Correct 5 ms 4308 KB Output is correct
17 Correct 1 ms 460 KB Output is correct
18 Correct 10 ms 8012 KB Output is correct
19 Correct 9 ms 7876 KB Output is correct
20 Correct 11 ms 7824 KB Output is correct
21 Correct 11 ms 7988 KB Output is correct
22 Correct 11 ms 7884 KB Output is correct
23 Correct 9 ms 7756 KB Output is correct
24 Correct 11 ms 8016 KB Output is correct
25 Correct 9 ms 7884 KB Output is correct
26 Correct 9 ms 7764 KB Output is correct
27 Correct 343 ms 87988 KB Output is correct
28 Correct 14 ms 26052 KB Output is correct
29 Correct 16 ms 7756 KB Output is correct
30 Correct 1 ms 588 KB Output is correct
31 Correct 242 ms 72512 KB Output is correct
32 Correct 318 ms 88376 KB Output is correct
33 Correct 326 ms 88188 KB Output is correct
34 Correct 293 ms 84144 KB Output is correct
35 Correct 322 ms 88348 KB Output is correct
36 Correct 306 ms 88108 KB Output is correct
37 Correct 383 ms 88404 KB Output is correct
38 Correct 221 ms 72436 KB Output is correct
39 Correct 223 ms 72256 KB Output is correct