oj.uz

Submission #1051485

# Submission time Handle Problem Language Result Execution time Memory
1051485 2024-08-10T07:24:14 Z NeroZein Fire (BOI24_fire) C++17
14 / 100
 312 ms 432 KB 
#include "bits/stdc++.h"
using namespace std;

#ifdef Nero
#include "Deb.h"
#else
#define debug(...)
#endif

int main() {
  ios::sync_with_stdio(false);
  cin.tie(nullptr);
  int n, m;
  cin >> n >> m;
  vector<int> s(n), e(n); 
  for (int i = 0; i < n; ++i) {
    cin >> s[i] >> e[i];
  }
  int ans = n + 1; 
  for (int mask = 1; mask < (1 << n); ++mask) {
    vector<pair<int, int>> ranges;
    for (int i = 0; i < n; ++i) {
      if (mask >> i & 1) {
        if (s[i] <= e[i]) {
          ranges.push_back({s[i], e[i]});
        } else {
          ranges.push_back({s[i], m - 1});
          ranges.push_back({0, e[i]});
        }
      }
    }
    bool ok = true; 
    sort(ranges.begin(), ranges.end()); 
    int mx = 0;
    for (int i = 0; i < (int) ranges.size(); ++i) {
      auto [l, r] = ranges[i];
      if (mx < l) {
        ok = false;
        break; 
      }
      mx = max(mx, r); 
    }
    ok &= mx == m - 1;
    if (ok) {
      ans = min(ans, __builtin_popcount(mask)); 
    }
  }
  cout << (ans > n ? -1 : ans) << '\n';
  return 0;
}

Subtask #1
14.0 / 14.0

# Verdict Execution time Memory Grader output
1 Correct 0 ms 348 KB Output is correct
2 Correct 0 ms 348 KB Output is correct
3 Correct 0 ms 348 KB Output is correct
4 Correct 0 ms 348 KB Output is correct
5 Correct 0 ms 348 KB Output is correct
6 Correct 0 ms 348 KB Output is correct
7 Correct 0 ms 348 KB Output is correct
8 Correct 271 ms 432 KB Output is correct
9 Correct 211 ms 348 KB Output is correct
10 Correct 218 ms 348 KB Output is correct
11 Correct 199 ms 344 KB Output is correct
12 Correct 187 ms 432 KB Output is correct
13 Correct 194 ms 344 KB Output is correct
14 Correct 195 ms 432 KB Output is correct
15 Correct 312 ms 348 KB Output is correct
16 Correct 208 ms 348 KB Output is correct
17 Correct 199 ms 348 KB Output is correct
18 Correct 193 ms 344 KB Output is correct
19 Correct 196 ms 348 KB Output is correct
20 Correct 184 ms 344 KB Output is correct
21 Correct 190 ms 348 KB Output is correct
22 Correct 196 ms 348 KB Output is correct
23 Correct 81 ms 344 KB Output is correct

Subtask #2
0 / 17.0

# Verdict Execution time Memory Grader output
1 Correct 0 ms 348 KB Output is correct
2 Correct 0 ms 348 KB Output is correct
3 Correct 0 ms 348 KB Output is correct
4 Correct 0 ms 348 KB Output is correct
5 Correct 0 ms 348 KB Output is correct
6 Correct 0 ms 348 KB Output is correct
7 Correct 0 ms 348 KB Output is correct
8 Correct 271 ms 432 KB Output is correct
9 Correct 211 ms 348 KB Output is correct
10 Correct 218 ms 348 KB Output is correct
11 Correct 199 ms 344 KB Output is correct
12 Correct 187 ms 432 KB Output is correct
13 Correct 194 ms 344 KB Output is correct
14 Correct 195 ms 432 KB Output is correct
15 Correct 312 ms 348 KB Output is correct
16 Correct 208 ms 348 KB Output is correct
17 Correct 199 ms 348 KB Output is correct
18 Correct 193 ms 344 KB Output is correct
19 Correct 196 ms 348 KB Output is correct
20 Correct 184 ms 344 KB Output is correct
21 Correct 190 ms 348 KB Output is correct
22 Correct 196 ms 348 KB Output is correct
23 Correct 81 ms 344 KB Output is correct
24 Correct 102 ms 432 KB Output is correct
25 Incorrect 7 ms 348 KB Output isn't correct
26 Halted 0 ms 0 KB -

Subtask #3
0 / 9.0

# Verdict Execution time Memory Grader output
1 Correct 0 ms 348 KB Output is correct
2 Correct 0 ms 348 KB Output is correct
3 Correct 0 ms 348 KB Output is correct
4 Correct 0 ms 348 KB Output is correct
5 Correct 0 ms 348 KB Output is correct
6 Correct 0 ms 348 KB Output is correct
7 Correct 0 ms 348 KB Output is correct
8 Correct 271 ms 432 KB Output is correct
9 Correct 211 ms 348 KB Output is correct
10 Correct 218 ms 348 KB Output is correct
11 Correct 199 ms 344 KB Output is correct
12 Correct 187 ms 432 KB Output is correct
13 Correct 194 ms 344 KB Output is correct
14 Correct 195 ms 432 KB Output is correct
15 Correct 312 ms 348 KB Output is correct
16 Correct 208 ms 348 KB Output is correct
17 Correct 199 ms 348 KB Output is correct
18 Correct 193 ms 344 KB Output is correct
19 Correct 196 ms 348 KB Output is correct
20 Correct 184 ms 344 KB Output is correct
21 Correct 190 ms 348 KB Output is correct
22 Correct 196 ms 348 KB Output is correct
23 Correct 81 ms 344 KB Output is correct
24 Correct 102 ms 432 KB Output is correct
25 Incorrect 7 ms 348 KB Output isn't correct
26 Halted 0 ms 0 KB -

Subtask #4
0 / 13.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 344 KB Output is correct
2 Correct 1 ms 344 KB Output is correct
3 Correct 264 ms 344 KB Output is correct
4 Correct 273 ms 348 KB Output is correct
5 Correct 215 ms 344 KB Output is correct
6 Correct 185 ms 348 KB Output is correct
7 Correct 187 ms 344 KB Output is correct
8 Correct 195 ms 344 KB Output is correct
9 Incorrect 8 ms 348 KB Output isn't correct
10 Halted 0 ms 0 KB -

Subtask #5
0 / 21.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 344 KB Output is correct
2 Correct 1 ms 344 KB Output is correct
3 Correct 0 ms 348 KB Output is correct
4 Correct 198 ms 424 KB Output is correct
5 Correct 200 ms 344 KB Output is correct
6 Correct 195 ms 344 KB Output is correct
7 Correct 188 ms 428 KB Output is correct
8 Incorrect 8 ms 344 KB Output isn't correct
9 Halted 0 ms 0 KB -

Subtask #6
0 / 26.0

# Verdict Execution time Memory Grader output
1 Correct 0 ms 348 KB Output is correct
2 Correct 0 ms 348 KB Output is correct
3 Correct 0 ms 348 KB Output is correct
4 Correct 0 ms 348 KB Output is correct
5 Correct 0 ms 348 KB Output is correct
6 Correct 0 ms 348 KB Output is correct
7 Correct 0 ms 348 KB Output is correct
8 Correct 271 ms 432 KB Output is correct
9 Correct 211 ms 348 KB Output is correct
10 Correct 218 ms 348 KB Output is correct
11 Correct 199 ms 344 KB Output is correct
12 Correct 187 ms 432 KB Output is correct
13 Correct 194 ms 344 KB Output is correct
14 Correct 195 ms 432 KB Output is correct
15 Correct 312 ms 348 KB Output is correct
16 Correct 208 ms 348 KB Output is correct
17 Correct 199 ms 348 KB Output is correct
18 Correct 193 ms 344 KB Output is correct
19 Correct 196 ms 348 KB Output is correct
20 Correct 184 ms 344 KB Output is correct
21 Correct 190 ms 348 KB Output is correct
22 Correct 196 ms 348 KB Output is correct
23 Correct 81 ms 344 KB Output is correct
24 Correct 102 ms 432 KB Output is correct
25 Incorrect 7 ms 348 KB Output isn't correct
26 Halted 0 ms 0 KB -