oj.uz

Submission #897218

# Submission time Handle Problem Language Result Execution time Memory
897218 2024-01-02T18:01:09 Z duckindog Bitaro the Brave (JOI19_ho_t1) C++14
100 / 100
 120 ms 80116 KB 
// from duckindog wth depression
#include<bits/stdc++.h>

using namespace std;

const int N = 3e3 + 10;
int h, w;
char a[N][N];
int fi[N][N], fo[N][N];

int32_t main() {
  cin.tie(0)->sync_with_stdio(0);

  if (fopen("duck.inp", "r")) {
    freopen("duck.inp", "r", stdin);
    freopen("duck.out", "w", stdout);
  }
  cin >> h >> w;
  for (int i = 1; i <= h; ++i) {
    string s; cin >> s;
    for (int j = 1; j <= w; ++j) a[i][j] = s[j - 1];
  }
  for (int j = 1; j <= w; ++j)
    for (int i = 1; i <= h; ++i) fi[i][j] = fi[i - 1][j] + (a[i][j] == 'I');

  for (int i = 1; i <= h; ++i)
    for (int j = 1; j <= w; ++j) fo[i][j] = fo[i][j - 1] + (a[i][j] == 'O');

  long long answer = 0;
  for (int i = 1; i <= h; ++i) {
    for (int j = 1; j <= w; ++j) {
      if (a[i][j] != 'J') continue;
      int O = fo[i][w] - fo[i][j - 1];
      int I = fi[h][j] - fi[i - 1][j];
      answer = answer + 1ll * O * I;
    }
  }
  cout << answer;

}

Compilation message

joi2019_ho_t1.cpp: In function 'int32_t main()':
joi2019_ho_t1.cpp:15:12: warning: ignoring return value of 'FILE* freopen(const char*, const char*, FILE*)' declared with attribute 'warn_unused_result' [-Wunused-result]
   15 |     freopen("duck.inp", "r", stdin);
      |     ~~~~~~~^~~~~~~~~~~~~~~~~~~~~~~~
joi2019_ho_t1.cpp:16:12: warning: ignoring return value of 'FILE* freopen(const char*, const char*, FILE*)' declared with attribute 'warn_unused_result' [-Wunused-result]
   16 |     freopen("duck.out", "w", stdout);
      |     ~~~~~~~^~~~~~~~~~~~~~~~~~~~~~~~~

Subtask #1
20.0 / 20.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 2396 KB Output is correct
2 Correct 1 ms 2396 KB Output is correct
3 Correct 1 ms 2396 KB Output is correct
4 Correct 1 ms 2396 KB Output is correct
5 Correct 1 ms 3164 KB Output is correct
6 Correct 1 ms 3164 KB Output is correct
7 Correct 1 ms 3164 KB Output is correct
8 Correct 1 ms 3416 KB Output is correct
9 Correct 1 ms 3164 KB Output is correct
10 Correct 1 ms 3164 KB Output is correct
11 Correct 1 ms 3416 KB Output is correct
12 Correct 1 ms 3164 KB Output is correct
13 Correct 1 ms 3164 KB Output is correct

Subtask #2
30.0 / 30.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 2396 KB Output is correct
2 Correct 1 ms 2396 KB Output is correct
3 Correct 1 ms 2396 KB Output is correct
4 Correct 1 ms 2396 KB Output is correct
5 Correct 1 ms 3164 KB Output is correct
6 Correct 1 ms 3164 KB Output is correct
7 Correct 1 ms 3164 KB Output is correct
8 Correct 1 ms 3416 KB Output is correct
9 Correct 1 ms 3164 KB Output is correct
10 Correct 1 ms 3164 KB Output is correct
11 Correct 1 ms 3416 KB Output is correct
12 Correct 1 ms 3164 KB Output is correct
13 Correct 1 ms 3164 KB Output is correct
14 Correct 6 ms 15196 KB Output is correct
15 Correct 3 ms 10840 KB Output is correct
16 Correct 3 ms 8540 KB Output is correct
17 Correct 1 ms 2396 KB Output is correct
18 Correct 5 ms 15448 KB Output is correct
19 Correct 4 ms 15448 KB Output is correct
20 Correct 5 ms 15508 KB Output is correct
21 Correct 5 ms 15452 KB Output is correct
22 Correct 4 ms 15452 KB Output is correct
23 Correct 4 ms 15452 KB Output is correct
24 Correct 5 ms 15452 KB Output is correct
25 Correct 4 ms 15452 KB Output is correct
26 Correct 4 ms 15452 KB Output is correct

Subtask #3
50.0 / 50.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 2396 KB Output is correct
2 Correct 1 ms 2396 KB Output is correct
3 Correct 1 ms 2396 KB Output is correct
4 Correct 1 ms 2396 KB Output is correct
5 Correct 1 ms 3164 KB Output is correct
6 Correct 1 ms 3164 KB Output is correct
7 Correct 1 ms 3164 KB Output is correct
8 Correct 1 ms 3416 KB Output is correct
9 Correct 1 ms 3164 KB Output is correct
10 Correct 1 ms 3164 KB Output is correct
11 Correct 1 ms 3416 KB Output is correct
12 Correct 1 ms 3164 KB Output is correct
13 Correct 1 ms 3164 KB Output is correct
14 Correct 6 ms 15196 KB Output is correct
15 Correct 3 ms 10840 KB Output is correct
16 Correct 3 ms 8540 KB Output is correct
17 Correct 1 ms 2396 KB Output is correct
18 Correct 5 ms 15448 KB Output is correct
19 Correct 4 ms 15448 KB Output is correct
20 Correct 5 ms 15508 KB Output is correct
21 Correct 5 ms 15452 KB Output is correct
22 Correct 4 ms 15452 KB Output is correct
23 Correct 4 ms 15452 KB Output is correct
24 Correct 5 ms 15452 KB Output is correct
25 Correct 4 ms 15452 KB Output is correct
26 Correct 4 ms 15452 KB Output is correct
27 Correct 118 ms 80116 KB Output is correct
28 Correct 9 ms 45400 KB Output is correct
29 Correct 7 ms 10328 KB Output is correct
30 Correct 1 ms 2652 KB Output is correct
31 Correct 72 ms 69972 KB Output is correct
32 Correct 95 ms 79952 KB Output is correct
33 Correct 95 ms 79952 KB Output is correct
34 Correct 92 ms 79444 KB Output is correct
35 Correct 94 ms 79956 KB Output is correct
36 Correct 95 ms 79764 KB Output is correct
37 Correct 120 ms 79952 KB Output is correct
38 Correct 58 ms 69968 KB Output is correct
39 Correct 70 ms 69876 KB Output is correct