oj.uz

Submission #1067385

# Submission time Handle Problem Language Result Execution time Memory
1067385 2024-08-20T16:11:59 Z juicy 버스 (JOI14_bus) C++17
100 / 100
 150 ms 17288 KB 
#include <bits/stdc++.h>

using namespace std;

#ifdef LOCAL
#include "debug.h"
#else
#define debug(...) 42
#endif

const int N = 1e5 + 5, M = 3e5 + 5, inf = 1e9;

int n, m, q;
int s[M], t[M], x[M], y[M], dp[M], best[N];

int main() {
  ios::sync_with_stdio(false); cin.tie(nullptr);

  cin >> n >> m;
  vector<array<int, 3>> events;
  for (int i = 1; i <= m; ++i) {
    cin >> s[i] >> t[i] >> x[i] >> y[i];
    events.push_back({x[i], 1, i});
    events.push_back({y[i], 0, i});
  }
  sort(events.begin(), events.end());
  fill(best + 1, best + n + 1, -inf);
  vector<array<int, 2>> cands;
  for (auto [_, type, i] : events) {
    if (!type) {
      best[t[i]] = max(best[t[i]], dp[i]);
      if (t[i] == n && dp[i] != -inf) {
        cands.push_back({y[i], dp[i]});
      } 
    } else {
      if (s[i] == 1) {
        dp[i] = x[i];
      } else {
        dp[i] = best[s[i]];
      }
    }
  }
  for (int i = 1; i < cands.size(); ++i) {
    cands[i][1] = max(cands[i][1], cands[i - 1][1]);
  }
  auto qry = [&](int x) {
    int it = lower_bound(cands.begin(), cands.end(), array<int, 2>{x, inf}) - cands.begin();
    return it == 0 ? -1 : cands[it - 1][1];
  };
  cin >> q;
  while (q--) {
    int x; cin >> x;
    cout << qry(x) << "\n";
  }
  return 0;
}

Compilation message

bus.cpp: In function 'int main()':
bus.cpp:43:21: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<std::array<int, 2> >::size_type' {aka 'long unsigned int'} [-Wsign-compare]
   43 |   for (int i = 1; i < cands.size(); ++i) {
      |                   ~~^~~~~~~~~~~~~~

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 360 KB Output is correct
4 Correct 0 ms 348 KB Output is correct
5 Correct 1 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 0 ms 348 KB Output is correct
9 Correct 0 ms 348 KB Output is correct
10 Correct 1 ms 348 KB Output is correct
11 Correct 1 ms 604 KB Output is correct
12 Correct 1 ms 600 KB Output is correct
13 Correct 1 ms 600 KB Output is correct
14 Correct 1 ms 604 KB Output is correct

Subtask #2
15.0 / 15.0

# Verdict Execution time Memory Grader output
1 Correct 0 ms 344 KB Output is correct
2 Correct 14 ms 1240 KB Output is correct
3 Correct 14 ms 1116 KB Output is correct
4 Correct 2 ms 604 KB Output is correct
5 Correct 1 ms 348 KB Output is correct
6 Correct 2 ms 348 KB Output is correct
7 Correct 9 ms 632 KB Output is correct
8 Correct 1 ms 348 KB Output is correct
9 Correct 9 ms 1176 KB Output is correct
10 Correct 16 ms 2136 KB Output is correct
11 Correct 10 ms 1296 KB Output is correct
12 Correct 18 ms 2160 KB Output is correct

Subtask #3
15.0 / 15.0

# Verdict Execution time Memory Grader output
1 Correct 128 ms 16816 KB Output is correct
2 Correct 129 ms 16824 KB Output is correct
3 Correct 129 ms 16876 KB Output is correct
4 Correct 142 ms 16900 KB Output is correct
5 Correct 130 ms 17076 KB Output is correct
6 Correct 133 ms 17072 KB Output is correct
7 Correct 127 ms 17088 KB Output is correct
8 Correct 130 ms 17232 KB Output is correct
9 Correct 128 ms 17076 KB Output is correct
10 Correct 126 ms 17076 KB Output is correct
11 Correct 123 ms 17084 KB Output is correct
12 Correct 124 ms 17180 KB Output is correct
13 Correct 130 ms 17072 KB Output is correct
14 Correct 123 ms 17220 KB Output is correct
15 Correct 124 ms 17084 KB Output is correct
16 Correct 38 ms 6332 KB Output is correct
17 Correct 38 ms 5064 KB Output is correct

Subtask #4
50.0 / 50.0

# Verdict Execution time Memory Grader output
1 Correct 139 ms 17280 KB Output is correct
2 Correct 139 ms 17068 KB Output is correct
3 Correct 140 ms 17076 KB Output is correct
4 Correct 138 ms 17212 KB Output is correct
5 Correct 143 ms 17076 KB Output is correct
6 Correct 140 ms 17168 KB Output is correct
7 Correct 141 ms 17076 KB Output is correct
8 Correct 143 ms 17112 KB Output is correct
9 Correct 150 ms 17076 KB Output is correct
10 Correct 139 ms 17168 KB Output is correct
11 Correct 138 ms 17220 KB Output is correct
12 Correct 138 ms 17080 KB Output is correct
13 Correct 137 ms 17072 KB Output is correct
14 Correct 137 ms 17288 KB Output is correct
15 Correct 148 ms 17228 KB Output is correct
16 Correct 48 ms 6592 KB Output is correct