oj.uz

Submission #967952

# Submission time Handle Problem Language Result Execution time Memory
967952 2024-04-23T06:01:56 Z duckindog Boat (APIO16_boat) C++17
31 / 100
 1525 ms 524288 KB 
#pragma GCC optimize("O3,unroll-loops")
#pragma GCC target("avx2,bmi,bmi2,lzcnt,popcnt")
#include <bits/stdc++.h>
 
using namespace std;
 
const int N = 500 + 10,
          M = 1'000'000'007;
int n;
int a[N], b[N];

int f[2][1'000'010];
 
int32_t main() { 
  cin.tie(0)->sync_with_stdio(0);
 
  cin >> n;
  for (int i = 1; i <= n; ++i) cin >> a[i] >> b[i];
 
  vector<int> rrh;
  for (int i = 1; i <= n; ++i) { 
    for (int j = a[i]; j <= b[i]; ++j) rrh.push_back(j);
  }
  sort(rrh.begin(), rrh.end());
  rrh.resize(unique(rrh.begin(), rrh.end()) - rrh.begin());

  f[0][0] = 1;
  for (int j = 1; j <= rrh.size(); ++j) f[0][j] = 1;
 
  for (int i = 1; i <= n; ++i) { 
    bool id = i & 1, p = id ^ 1;
    
    int it = lower_bound(rrh.begin(), rrh.end(), a[i]) - rrh.begin() + 1;

    auto add = [&](auto& value, const auto& delta) {
      value += delta;
      if (value >= M) value -= M;
    };
    
    f[id][0] = f[p][0];
    for (int j = 1; j <= rrh.size(); ++j) {
      f[id][j] = f[id][j - 1];
      if (j < it || j > b[i] - a[i] + it) {
        add(f[id][j], f[p][j]);
        add(f[id][j], M - f[p][j - 1]);
      } else {
        add(f[id][j], f[p][j]);
      }
    }
  }
  
  cout << f[n & 1][rrh.size()] - 1 << "\n";
  cerr << 1.0 * clock() / CLOCKS_PER_SEC << "\n";
}

Compilation message

boat.cpp: In function 'int32_t main()':
boat.cpp:28:21: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<int>::size_type' {aka 'long unsigned int'} [-Wsign-compare]
   28 |   for (int j = 1; j <= rrh.size(); ++j) f[0][j] = 1;
      |                   ~~^~~~~~~~~~~~~
boat.cpp:41:23: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<int>::size_type' {aka 'long unsigned int'} [-Wsign-compare]
   41 |     for (int j = 1; j <= rrh.size(); ++j) {
      |                     ~~^~~~~~~~~~~~~

Subtask #1
9.0 / 9.0

# 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 2396 KB Output is correct
6 Correct 1 ms 2396 KB Output is correct
7 Correct 1 ms 2396 KB Output is correct
8 Correct 1 ms 2396 KB Output is correct
9 Correct 1 ms 2396 KB Output is correct
10 Correct 1 ms 2396 KB Output is correct
11 Correct 2 ms 2392 KB Output is correct
12 Correct 1 ms 2396 KB Output is correct
13 Correct 1 ms 2396 KB Output is correct
14 Correct 1 ms 2396 KB Output is correct
15 Correct 1 ms 2396 KB Output is correct
16 Correct 1 ms 2396 KB Output is correct
17 Correct 1 ms 2396 KB Output is correct
18 Correct 1 ms 2396 KB Output is correct
19 Correct 1 ms 2396 KB Output is correct
20 Correct 1 ms 2392 KB Output is correct

Subtask #2
22.0 / 22.0

# 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 2396 KB Output is correct
6 Correct 1 ms 2396 KB Output is correct
7 Correct 1 ms 2396 KB Output is correct
8 Correct 1 ms 2396 KB Output is correct
9 Correct 1 ms 2396 KB Output is correct
10 Correct 1 ms 2396 KB Output is correct
11 Correct 2 ms 2392 KB Output is correct
12 Correct 1 ms 2396 KB Output is correct
13 Correct 1 ms 2396 KB Output is correct
14 Correct 1 ms 2396 KB Output is correct
15 Correct 1 ms 2396 KB Output is correct
16 Correct 1 ms 2396 KB Output is correct
17 Correct 1 ms 2396 KB Output is correct
18 Correct 1 ms 2396 KB Output is correct
19 Correct 1 ms 2396 KB Output is correct
20 Correct 1 ms 2392 KB Output is correct
21 Correct 41 ms 6100 KB Output is correct
22 Correct 41 ms 6100 KB Output is correct
23 Correct 40 ms 5840 KB Output is correct
24 Correct 43 ms 6084 KB Output is correct
25 Correct 42 ms 6096 KB Output is correct
26 Correct 39 ms 6332 KB Output is correct
27 Correct 38 ms 6336 KB Output is correct
28 Correct 38 ms 6612 KB Output is correct
29 Correct 39 ms 6332 KB Output is correct
30 Correct 1466 ms 12252 KB Output is correct
31 Correct 1505 ms 12116 KB Output is correct
32 Correct 1525 ms 12252 KB Output is correct
33 Correct 1456 ms 12048 KB Output is correct
34 Correct 1469 ms 12384 KB Output is correct
35 Correct 1463 ms 11964 KB Output is correct
36 Correct 1484 ms 12024 KB Output is correct
37 Correct 1509 ms 12100 KB Output is correct
38 Correct 1472 ms 11848 KB Output is correct

Subtask #3
0 / 27.0

# Verdict Execution time Memory Grader output
1 Runtime error 467 ms 524288 KB Execution killed with signal 9
2 Halted 0 ms 0 KB -

Subtask #4
0 / 42.0

# 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 2396 KB Output is correct
6 Correct 1 ms 2396 KB Output is correct
7 Correct 1 ms 2396 KB Output is correct
8 Correct 1 ms 2396 KB Output is correct
9 Correct 1 ms 2396 KB Output is correct
10 Correct 1 ms 2396 KB Output is correct
11 Correct 2 ms 2392 KB Output is correct
12 Correct 1 ms 2396 KB Output is correct
13 Correct 1 ms 2396 KB Output is correct
14 Correct 1 ms 2396 KB Output is correct
15 Correct 1 ms 2396 KB Output is correct
16 Correct 1 ms 2396 KB Output is correct
17 Correct 1 ms 2396 KB Output is correct
18 Correct 1 ms 2396 KB Output is correct
19 Correct 1 ms 2396 KB Output is correct
20 Correct 1 ms 2392 KB Output is correct
21 Correct 41 ms 6100 KB Output is correct
22 Correct 41 ms 6100 KB Output is correct
23 Correct 40 ms 5840 KB Output is correct
24 Correct 43 ms 6084 KB Output is correct
25 Correct 42 ms 6096 KB Output is correct
26 Correct 39 ms 6332 KB Output is correct
27 Correct 38 ms 6336 KB Output is correct
28 Correct 38 ms 6612 KB Output is correct
29 Correct 39 ms 6332 KB Output is correct
30 Correct 1466 ms 12252 KB Output is correct
31 Correct 1505 ms 12116 KB Output is correct
32 Correct 1525 ms 12252 KB Output is correct
33 Correct 1456 ms 12048 KB Output is correct
34 Correct 1469 ms 12384 KB Output is correct
35 Correct 1463 ms 11964 KB Output is correct
36 Correct 1484 ms 12024 KB Output is correct
37 Correct 1509 ms 12100 KB Output is correct
38 Correct 1472 ms 11848 KB Output is correct
39 Runtime error 467 ms 524288 KB Execution killed with signal 9
40 Halted 0 ms 0 KB -