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Submission #850952

# Submission time Handle Problem Language Result Execution time Memory
850952 2023-09-18T02:42:08 Z NeroZein Toll (BOI17_toll) C++17
100 / 100
 132 ms 65896 KB 
#include "bits/stdc++.h"
using namespace std;

const int Log = 17;
const long long INF = 1e15;

int main() {
  ios::sync_with_stdio(false);
  cin.tie(nullptr);
  int k, n, m, q;
  cin >> k >> n >> m >> q;
  vector<vector<vector<long long>>> jump(Log, vector<vector<long long>> (n, vector<long long> (k, INF)));
  for (int i = 0; i < m; ++i) {
    int u, v, w;
    cin >> u >> v >> w;
    jump[0][u][v % k] = w;
  }
  map<int, int> mp; 
  for (int i = 0; i < Log; ++i) {
    mp[1 << i] = i; 
  }
  for (int bit = 1; bit < Log; ++bit) {
    for (int i = 0; i < n; ++i) {
      for (int j = 0; j < k; ++j) {
        int x = i - (i % k) + (1 << (bit - 1)) * k + j; 
        if (x >= n) {
          break; 
        }
        for (int l = 0; l < k; ++l) {
          jump[bit][i][l] = min(jump[bit][i][l], jump[bit - 1][i][j] + jump[bit - 1][x][l]);
        }
      }
    }
  }
  while (q--) {
    int u, v;
    cin >> u >> v;
    int diff = v / k - u / k;
    if (diff <= 0) {
      cout << -1 << '\n';
      continue;
    }
    vector<pair<int, long long>> vec = {{u, 0}}; 
    while (diff) {
      int lsb = diff & -diff; 
      int ind = mp[lsb]; 
      diff -= lsb; 
      vector<pair<int, long long>> nvec;
      int org = vec.back().first;
      org -= org % k; 
      for (int i = 0; i < k; ++i) {
        int nnode = org + lsb * k + i;
        if (nnode >= n) {
          break; 
        }
        nvec.push_back({org + lsb * k + i, INF}); 
      }
      for (auto [x, y] : vec) {
        for (int j = 0; j < k; ++j) {
          nvec[j].second = min(nvec[j].second, y + jump[ind][x][j]);
        }
      }
      vec = nvec;
    }
    bool f = false;
    for (auto [i, j] : vec) {
      if (i == v && j < INF) {
        cout << j << '\n';
        f = true; 
        break;
      }
    }
    if (!f) {
      cout << -1 << '\n'; 
    }
  }
  return 0;
}

Subtask #1
7.0 / 7.0

# Verdict Execution time Memory Grader output
1 Correct 76 ms 49756 KB Output is correct
2 Correct 0 ms 344 KB Output is correct
3 Correct 0 ms 344 KB Output is correct
4 Correct 1 ms 344 KB Output is correct
5 Correct 2 ms 1368 KB Output is correct
6 Correct 2 ms 1372 KB Output is correct
7 Correct 2 ms 1368 KB Output is correct
8 Correct 71 ms 49744 KB Output is correct
9 Correct 72 ms 49752 KB Output is correct
10 Correct 68 ms 49788 KB Output is correct

Subtask #2
10.0 / 10.0

# Verdict Execution time Memory Grader output
1 Correct 71 ms 50244 KB Output is correct
2 Correct 1 ms 344 KB Output is correct
3 Correct 0 ms 344 KB Output is correct
4 Correct 1 ms 344 KB Output is correct
5 Correct 0 ms 344 KB Output is correct
6 Correct 0 ms 412 KB Output is correct
7 Correct 5 ms 1368 KB Output is correct
8 Correct 8 ms 1368 KB Output is correct
9 Correct 59 ms 50000 KB Output is correct
10 Correct 88 ms 50876 KB Output is correct
11 Correct 76 ms 50236 KB Output is correct
12 Correct 72 ms 49908 KB Output is correct
13 Correct 68 ms 40196 KB Output is correct
14 Correct 49 ms 30916 KB Output is correct
15 Correct 53 ms 38796 KB Output is correct
16 Correct 53 ms 38804 KB Output is correct

Subtask #3
8.0 / 8.0

# Verdict Execution time Memory Grader output
1 Correct 0 ms 344 KB Output is correct
2 Correct 1 ms 344 KB Output is correct
3 Correct 0 ms 344 KB Output is correct
4 Correct 0 ms 344 KB Output is correct
5 Correct 1 ms 344 KB Output is correct
6 Correct 2 ms 1372 KB Output is correct
7 Correct 2 ms 1368 KB Output is correct
8 Correct 2 ms 1880 KB Output is correct
9 Correct 2 ms 1624 KB Output is correct
10 Correct 54 ms 49744 KB Output is correct
11 Correct 65 ms 49984 KB Output is correct
12 Correct 75 ms 50748 KB Output is correct
13 Correct 83 ms 50872 KB Output is correct
14 Correct 73 ms 50360 KB Output is correct
15 Correct 51 ms 38984 KB Output is correct
16 Correct 53 ms 38820 KB Output is correct

Subtask #4
31.0 / 31.0

# Verdict Execution time Memory Grader output
1 Correct 0 ms 344 KB Output is correct
2 Correct 1 ms 344 KB Output is correct
3 Correct 0 ms 344 KB Output is correct
4 Correct 0 ms 344 KB Output is correct
5 Correct 1 ms 344 KB Output is correct
6 Correct 2 ms 1372 KB Output is correct
7 Correct 2 ms 1368 KB Output is correct
8 Correct 2 ms 1880 KB Output is correct
9 Correct 2 ms 1624 KB Output is correct
10 Correct 54 ms 49744 KB Output is correct
11 Correct 65 ms 49984 KB Output is correct
12 Correct 75 ms 50748 KB Output is correct
13 Correct 83 ms 50872 KB Output is correct
14 Correct 73 ms 50360 KB Output is correct
15 Correct 51 ms 38984 KB Output is correct
16 Correct 53 ms 38820 KB Output is correct
17 Correct 77 ms 50040 KB Output is correct
18 Correct 0 ms 344 KB Output is correct
19 Correct 0 ms 344 KB Output is correct
20 Correct 0 ms 600 KB Output is correct
21 Correct 0 ms 344 KB Output is correct
22 Correct 0 ms 344 KB Output is correct
23 Correct 3 ms 1372 KB Output is correct
24 Correct 3 ms 1368 KB Output is correct
25 Correct 4 ms 1624 KB Output is correct
26 Correct 4 ms 1624 KB Output is correct
27 Correct 59 ms 49936 KB Output is correct
28 Correct 81 ms 50800 KB Output is correct
29 Correct 83 ms 50872 KB Output is correct
30 Correct 84 ms 50416 KB Output is correct

Subtask #5
44.0 / 44.0

# Verdict Execution time Memory Grader output
1 Correct 76 ms 49756 KB Output is correct
2 Correct 0 ms 344 KB Output is correct
3 Correct 0 ms 344 KB Output is correct
4 Correct 1 ms 344 KB Output is correct
5 Correct 2 ms 1368 KB Output is correct
6 Correct 2 ms 1372 KB Output is correct
7 Correct 2 ms 1368 KB Output is correct
8 Correct 71 ms 49744 KB Output is correct
9 Correct 72 ms 49752 KB Output is correct
10 Correct 68 ms 49788 KB Output is correct
11 Correct 71 ms 50244 KB Output is correct
12 Correct 1 ms 344 KB Output is correct
13 Correct 0 ms 344 KB Output is correct
14 Correct 1 ms 344 KB Output is correct
15 Correct 0 ms 344 KB Output is correct
16 Correct 0 ms 412 KB Output is correct
17 Correct 5 ms 1368 KB Output is correct
18 Correct 8 ms 1368 KB Output is correct
19 Correct 59 ms 50000 KB Output is correct
20 Correct 88 ms 50876 KB Output is correct
21 Correct 76 ms 50236 KB Output is correct
22 Correct 72 ms 49908 KB Output is correct
23 Correct 68 ms 40196 KB Output is correct
24 Correct 49 ms 30916 KB Output is correct
25 Correct 53 ms 38796 KB Output is correct
26 Correct 53 ms 38804 KB Output is correct
27 Correct 0 ms 344 KB Output is correct
28 Correct 1 ms 344 KB Output is correct
29 Correct 0 ms 344 KB Output is correct
30 Correct 0 ms 344 KB Output is correct
31 Correct 1 ms 344 KB Output is correct
32 Correct 2 ms 1372 KB Output is correct
33 Correct 2 ms 1368 KB Output is correct
34 Correct 2 ms 1880 KB Output is correct
35 Correct 2 ms 1624 KB Output is correct
36 Correct 54 ms 49744 KB Output is correct
37 Correct 65 ms 49984 KB Output is correct
38 Correct 75 ms 50748 KB Output is correct
39 Correct 83 ms 50872 KB Output is correct
40 Correct 73 ms 50360 KB Output is correct
41 Correct 51 ms 38984 KB Output is correct
42 Correct 53 ms 38820 KB Output is correct
43 Correct 77 ms 50040 KB Output is correct
44 Correct 0 ms 344 KB Output is correct
45 Correct 0 ms 344 KB Output is correct
46 Correct 0 ms 600 KB Output is correct
47 Correct 0 ms 344 KB Output is correct
48 Correct 0 ms 344 KB Output is correct
49 Correct 3 ms 1372 KB Output is correct
50 Correct 3 ms 1368 KB Output is correct
51 Correct 4 ms 1624 KB Output is correct
52 Correct 4 ms 1624 KB Output is correct
53 Correct 59 ms 49936 KB Output is correct
54 Correct 81 ms 50800 KB Output is correct
55 Correct 83 ms 50872 KB Output is correct
56 Correct 84 ms 50416 KB Output is correct
57 Correct 132 ms 65896 KB Output is correct
58 Correct 79 ms 49636 KB Output is correct
59 Correct 84 ms 50176 KB Output is correct