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Submission #301966

# Submission time Handle Problem Language Result Execution time Memory
301966 2020-09-18T10:40:49 Z MylnikovNikolay Bitaro the Brave (JOI19_ho_t1) C++17
100 / 100
 426 ms 150520 KB 
#include <bits/stdc++.h>

using namespace std;

typedef long long ll;
typedef pair <ll , ll> pll;

#define fi first
#define se second
//#define int ll

const int intf = 2e9 , maxn = 1e5 + 5;
const ll inf = 2e18 , mod = 1e9 + 7;


void solve(){
    int h , w;
    cin >> h >> w;
    vector < vector <int> > a;
    vector < vector <int> > pref[3];
    a = pref[0] = pref[1] = pref[2] = vector < vector <int> > (h , vector <int> (w , 0));
    for (int i = 0; i < h; i ++){
        for (int j = 0; j < w; j ++){
            char c; cin >> c;
            if (c == 'J'){
                a[i][j] = 0;
            } else if (c == 'O'){
                a[i][j] = 1;
                pref[1][i][j] = 1;
            } else {
                a[i][j] = 2;
                pref[2][i][j] = 1;
            }
        }
    }

    for (int i = h - 1; i >= 0; i --){
        for (int j = w - 1; j >= 0; j --){
            if (j + 1 < w)
                pref[1][i][j] += pref[1][i][j + 1];
            if (i + 1 < h)
                pref[2][i][j] += pref[2][i + 1][j];
        }
    }

    ll ans = 0;
    for (int i = 0; i < h; i ++){
        for (int j = 0; j < w; j ++){
            if (a[i][j] != 0)
                continue;
            ans += pref[1][i][j] * pref[2][i][j];
        }
    }

    cout << ans << '\n';

}

signed main() {
    //freopen("input.txt" , "r" , stdin);
    ios_base::sync_with_stdio(false); cin.tie(0); cout.tie(0); cout.precision(20);

    int t = 1; //cin >> t;
    while(t-->0){
        solve();
    }

	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 1 ms 384 KB Output is correct
3 Correct 1 ms 384 KB Output is correct
4 Correct 1 ms 384 KB Output is correct
5 Correct 1 ms 512 KB Output is correct
6 Correct 1 ms 512 KB Output is correct
7 Correct 1 ms 512 KB Output is correct
8 Correct 1 ms 512 KB Output is correct
9 Correct 1 ms 512 KB Output is correct
10 Correct 1 ms 512 KB Output is correct
11 Correct 1 ms 512 KB Output is correct
12 Correct 1 ms 512 KB Output is correct
13 Correct 1 ms 512 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 1 ms 384 KB Output is correct
3 Correct 1 ms 384 KB Output is correct
4 Correct 1 ms 384 KB Output is correct
5 Correct 1 ms 512 KB Output is correct
6 Correct 1 ms 512 KB Output is correct
7 Correct 1 ms 512 KB Output is correct
8 Correct 1 ms 512 KB Output is correct
9 Correct 1 ms 512 KB Output is correct
10 Correct 1 ms 512 KB Output is correct
11 Correct 1 ms 512 KB Output is correct
12 Correct 1 ms 512 KB Output is correct
13 Correct 1 ms 512 KB Output is correct
14 Correct 10 ms 3584 KB Output is correct
15 Correct 1 ms 512 KB Output is correct
16 Correct 6 ms 2560 KB Output is correct
17 Correct 1 ms 384 KB Output is correct
18 Correct 12 ms 4608 KB Output is correct
19 Correct 10 ms 4480 KB Output is correct
20 Correct 10 ms 4512 KB Output is correct
21 Correct 12 ms 4608 KB Output is correct
22 Correct 10 ms 4352 KB Output is correct
23 Correct 10 ms 4480 KB Output is correct
24 Correct 13 ms 4608 KB Output is correct
25 Correct 10 ms 4352 KB Output is correct
26 Correct 9 ms 4480 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 1 ms 384 KB Output is correct
3 Correct 1 ms 384 KB Output is correct
4 Correct 1 ms 384 KB Output is correct
5 Correct 1 ms 512 KB Output is correct
6 Correct 1 ms 512 KB Output is correct
7 Correct 1 ms 512 KB Output is correct
8 Correct 1 ms 512 KB Output is correct
9 Correct 1 ms 512 KB Output is correct
10 Correct 1 ms 512 KB Output is correct
11 Correct 1 ms 512 KB Output is correct
12 Correct 1 ms 512 KB Output is correct
13 Correct 1 ms 512 KB Output is correct
14 Correct 10 ms 3584 KB Output is correct
15 Correct 1 ms 512 KB Output is correct
16 Correct 6 ms 2560 KB Output is correct
17 Correct 1 ms 384 KB Output is correct
18 Correct 12 ms 4608 KB Output is correct
19 Correct 10 ms 4480 KB Output is correct
20 Correct 10 ms 4512 KB Output is correct
21 Correct 12 ms 4608 KB Output is correct
22 Correct 10 ms 4352 KB Output is correct
23 Correct 10 ms 4480 KB Output is correct
24 Correct 13 ms 4608 KB Output is correct
25 Correct 10 ms 4352 KB Output is correct
26 Correct 9 ms 4480 KB Output is correct
27 Correct 401 ms 142328 KB Output is correct
28 Correct 2 ms 1152 KB Output is correct
29 Correct 24 ms 11136 KB Output is correct
30 Correct 2 ms 768 KB Output is correct
31 Correct 294 ms 104696 KB Output is correct
32 Correct 356 ms 149752 KB Output is correct
33 Correct 323 ms 150012 KB Output is correct
34 Correct 339 ms 121336 KB Output is correct
35 Correct 364 ms 149752 KB Output is correct
36 Correct 326 ms 150008 KB Output is correct
37 Correct 426 ms 150520 KB Output is correct
38 Correct 239 ms 103928 KB Output is correct
39 Correct 224 ms 104440 KB Output is correct