oj.uz

Submission #414158

# Submission time Handle Problem Language Result Execution time Memory
414158 2021-05-30T07:13:41 Z 600Mihnea Cultivation (JOI17_cultivation) C++17
30 / 100
 541 ms 632 KB 
#include <bits/stdc++.h>

using namespace std;

typedef long long ll;
#define int ll

ll max(ll a, signed b) {
  if (a > b) return a;
  return b;
}


const int N = 300 + 7;
const int INF = (int) 1e18 + 7;

int dimx, dimy, n;

struct point {
  int x;
  int y;
};

point v[N];
vector<int> cover[N];

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

  ///freopen ("input", "r", stdin);

  cin >> dimx >> dimy >> n;

  for (int i = 1; i <= n; i++) {
    cin >> v[i].x >> v[i].y;
  }

  assert(dimx <= 40);

  int sol = INF;

  for (int a = 0; a <= dimx; a++) {
    for (int b = 0; b <= dimx; b++) { /// fix north, south

      for (int i = 1; i <= dimx; i++) {
        cover[i].clear();
      }
      for (int i = 1; i <= n; i++) {
        int l = max(1, v[i].x - a), r = min(dimx, v[i].x + b);
        for (int j = l; j <= r; j++) {
          cover[j].push_back(i);
        }
      }

      bool ok = 1;
      for (int i = 1; i <= dimx; i++) {
        if (cover[i].empty()) {
          ok = 0;
          break;
        }
      }

      if (!ok) {
        continue;
      }

      /// now it's a pretty easy task

      /// For each row I have some restrictions
      int r1 = 0, r2 = 0, rsum = 0;

      for (int i = 1; i <= dimx; i++) {
        vector<int> pts;
        for (auto &j : cover[i]) {
          pts.push_back(v[j].y);
        }

        sort(pts.begin(), pts.end());

        r1 = max(r1, pts[0] - 1);
        r2 = max(r2, dimy - pts.back());

        for (int j = 1; j < (int) pts.size(); j++) {
          rsum = max(rsum, pts[j] - pts[j - 1] - 1);
        }
      }
      rsum = max(rsum, r1 + r2);
      sol = min(sol, a + b + rsum);
    }
  }

  cout << sol << "\n";
  return 0;
}

Subtask #1
5.0 / 5.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 204 KB Output is correct
2 Correct 1 ms 204 KB Output is correct
3 Correct 1 ms 204 KB Output is correct
4 Correct 1 ms 204 KB Output is correct
5 Correct 1 ms 204 KB Output is correct
6 Correct 1 ms 204 KB Output is correct
7 Correct 1 ms 204 KB Output is correct
8 Correct 1 ms 204 KB Output is correct
9 Correct 1 ms 204 KB Output is correct
10 Correct 1 ms 204 KB Output is correct
11 Correct 1 ms 204 KB Output is correct
12 Correct 1 ms 204 KB Output is correct
13 Correct 1 ms 204 KB Output is correct
14 Correct 1 ms 204 KB Output is correct
15 Correct 1 ms 204 KB Output is correct
16 Correct 1 ms 204 KB Output is correct

Subtask #2
10.0 / 10.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 204 KB Output is correct
2 Correct 1 ms 204 KB Output is correct
3 Correct 1 ms 204 KB Output is correct
4 Correct 1 ms 204 KB Output is correct
5 Correct 1 ms 204 KB Output is correct
6 Correct 1 ms 204 KB Output is correct
7 Correct 1 ms 204 KB Output is correct
8 Correct 1 ms 204 KB Output is correct
9 Correct 1 ms 204 KB Output is correct
10 Correct 1 ms 204 KB Output is correct
11 Correct 1 ms 204 KB Output is correct
12 Correct 1 ms 204 KB Output is correct
13 Correct 1 ms 204 KB Output is correct
14 Correct 1 ms 204 KB Output is correct
15 Correct 1 ms 204 KB Output is correct
16 Correct 1 ms 204 KB Output is correct
17 Correct 2 ms 204 KB Output is correct
18 Correct 18 ms 348 KB Output is correct
19 Correct 21 ms 332 KB Output is correct
20 Correct 2 ms 204 KB Output is correct
21 Correct 61 ms 344 KB Output is correct
22 Correct 159 ms 372 KB Output is correct
23 Correct 18 ms 344 KB Output is correct
24 Correct 292 ms 468 KB Output is correct
25 Correct 207 ms 384 KB Output is correct
26 Correct 488 ms 520 KB Output is correct
27 Correct 541 ms 516 KB Output is correct
28 Correct 266 ms 412 KB Output is correct
29 Correct 406 ms 480 KB Output is correct
30 Correct 487 ms 576 KB Output is correct
31 Correct 478 ms 580 KB Output is correct
32 Correct 534 ms 576 KB Output is correct

Subtask #3
15.0 / 15.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 204 KB Output is correct
2 Correct 1 ms 204 KB Output is correct
3 Correct 1 ms 204 KB Output is correct
4 Correct 1 ms 204 KB Output is correct
5 Correct 1 ms 204 KB Output is correct
6 Correct 1 ms 204 KB Output is correct
7 Correct 1 ms 204 KB Output is correct
8 Correct 1 ms 204 KB Output is correct
9 Correct 1 ms 204 KB Output is correct
10 Correct 1 ms 204 KB Output is correct
11 Correct 1 ms 204 KB Output is correct
12 Correct 1 ms 204 KB Output is correct
13 Correct 1 ms 204 KB Output is correct
14 Correct 1 ms 204 KB Output is correct
15 Correct 1 ms 204 KB Output is correct
16 Correct 1 ms 204 KB Output is correct
17 Correct 2 ms 204 KB Output is correct
18 Correct 18 ms 348 KB Output is correct
19 Correct 21 ms 332 KB Output is correct
20 Correct 2 ms 204 KB Output is correct
21 Correct 61 ms 344 KB Output is correct
22 Correct 159 ms 372 KB Output is correct
23 Correct 18 ms 344 KB Output is correct
24 Correct 292 ms 468 KB Output is correct
25 Correct 207 ms 384 KB Output is correct
26 Correct 488 ms 520 KB Output is correct
27 Correct 541 ms 516 KB Output is correct
28 Correct 266 ms 412 KB Output is correct
29 Correct 406 ms 480 KB Output is correct
30 Correct 487 ms 576 KB Output is correct
31 Correct 478 ms 580 KB Output is correct
32 Correct 534 ms 576 KB Output is correct
33 Correct 1 ms 332 KB Output is correct
34 Correct 507 ms 444 KB Output is correct
35 Correct 521 ms 492 KB Output is correct
36 Correct 510 ms 508 KB Output is correct
37 Correct 340 ms 580 KB Output is correct
38 Correct 511 ms 432 KB Output is correct
39 Correct 477 ms 612 KB Output is correct
40 Correct 509 ms 512 KB Output is correct
41 Correct 325 ms 564 KB Output is correct
42 Correct 389 ms 480 KB Output is correct
43 Correct 451 ms 524 KB Output is correct
44 Correct 507 ms 632 KB Output is correct

Subtask #4
0 / 30.0

# Verdict Execution time Memory Grader output
1 Runtime error 2 ms 460 KB Execution killed with signal 6
2 Halted 0 ms 0 KB -

Subtask #5
0 / 20.0

# Verdict Execution time Memory Grader output
1 Runtime error 2 ms 460 KB Execution killed with signal 6
2 Halted 0 ms 0 KB -

Subtask #6
0 / 20.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 204 KB Output is correct
2 Correct 1 ms 204 KB Output is correct
3 Correct 1 ms 204 KB Output is correct
4 Correct 1 ms 204 KB Output is correct
5 Correct 1 ms 204 KB Output is correct
6 Correct 1 ms 204 KB Output is correct
7 Correct 1 ms 204 KB Output is correct
8 Correct 1 ms 204 KB Output is correct
9 Correct 1 ms 204 KB Output is correct
10 Correct 1 ms 204 KB Output is correct
11 Correct 1 ms 204 KB Output is correct
12 Correct 1 ms 204 KB Output is correct
13 Correct 1 ms 204 KB Output is correct
14 Correct 1 ms 204 KB Output is correct
15 Correct 1 ms 204 KB Output is correct
16 Correct 1 ms 204 KB Output is correct
17 Correct 2 ms 204 KB Output is correct
18 Correct 18 ms 348 KB Output is correct
19 Correct 21 ms 332 KB Output is correct
20 Correct 2 ms 204 KB Output is correct
21 Correct 61 ms 344 KB Output is correct
22 Correct 159 ms 372 KB Output is correct
23 Correct 18 ms 344 KB Output is correct
24 Correct 292 ms 468 KB Output is correct
25 Correct 207 ms 384 KB Output is correct
26 Correct 488 ms 520 KB Output is correct
27 Correct 541 ms 516 KB Output is correct
28 Correct 266 ms 412 KB Output is correct
29 Correct 406 ms 480 KB Output is correct
30 Correct 487 ms 576 KB Output is correct
31 Correct 478 ms 580 KB Output is correct
32 Correct 534 ms 576 KB Output is correct
33 Correct 1 ms 332 KB Output is correct
34 Correct 507 ms 444 KB Output is correct
35 Correct 521 ms 492 KB Output is correct
36 Correct 510 ms 508 KB Output is correct
37 Correct 340 ms 580 KB Output is correct
38 Correct 511 ms 432 KB Output is correct
39 Correct 477 ms 612 KB Output is correct
40 Correct 509 ms 512 KB Output is correct
41 Correct 325 ms 564 KB Output is correct
42 Correct 389 ms 480 KB Output is correct
43 Correct 451 ms 524 KB Output is correct
44 Correct 507 ms 632 KB Output is correct
45 Runtime error 2 ms 460 KB Execution killed with signal 6
46 Halted 0 ms 0 KB -