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Submission #674857

# Submission time Handle Problem Language Result Execution time Memory
674857 2022-12-26T11:04:26 Z Valera_Grinenko Toll (BOI17_toll) C++17
100 / 100
 89 ms 14076 KB 
// #pragma GCC optimize("Ofast,unroll-loops")
// #pragma GCC target("avx,avx2,fma")
#include <bits/stdc++.h>
#define fi first
#define se second
#define pb push_back
#define ppb pop_back
#define mp make_pair
#define all(x) (x).begin(), (x).end()
#define rall(x) (x).rbegin(), (x).rend()
#define make_unique(x) sort(all((x))); (x).resize(unique(all((x))) - (x).begin())
typedef long long ll;
typedef long double ld;
using namespace std;
mt19937 rng(chrono::steady_clock::now().time_since_epoch().count());
template<class T> bool umin(T &a, T b) { return a > b ? (a = b, true) : false; }
template<class T> bool umax(T &a, T b) { return a < b ? (a = b, true) : false; }
const int N = 50001;
int k, n, m, o;
vector<pair<pair<int, int>, int> > qq;
vector<pair<pair<int, int>, int> > g[N];
int ans[N];
ll dist[N][5][5];
void kek(int l, int r, vector<pair<pair<int, int>, int> >& curq) {
  vector<pair<pair<int, int>, int> > tol, tor, mid;
  int m = (l + r) / 2;
  for(int i = l; i <= r; i++)
    for(int a = 0; a < k; a++)
      for(int b = 0; b < k; b++)
        dist[i][a][b] = 1e18;
  for(int i = 0; i < k; i++)
    for(int j = 0; j < k; j++)
      dist[m][i][j] = (i == j ? 0 : 1e18);
  for(int i = m; i + 1 <= r; i++) {
    for(auto& edge : g[i])
      for(int st = 0; st < k; st++)
        umin(dist[i + 1][st][edge.fi.se], dist[i][st][edge.fi.fi] + edge.se);
  }
  for(int i = m; i - 1 >= l; i--) {
    for(auto& edge : g[i - 1])
      for(int fs = 0; fs < k; fs++)
        umin(dist[i - 1][fs][edge.fi.fi], dist[i][fs][edge.fi.se] + edge.se);
  }
  for(auto& x : curq)
    if(x.fi.se / k < m) tol.pb(x);
    else if(x.fi.fi / k > m) tor.pb(x);
    else {
      ll res = 1e18;
      for(int inter = 0; inter < k; inter++)
        umin(res, dist[x.fi.fi / k][inter][x.fi.fi % k] + dist[x.fi.se / k][inter][x.fi.se % k]);
      ans[x.se] = (res == 1e18 ? -1 : res);
    }
  if(l == r) return;
  if(!tol.empty()) kek(l, m - 1, tol);
  if(!tor.empty()) kek(m + 1, r, tor);
}
void solve() {
  cin >> k >> n >> m >> o;
  for(int i = 0; i < m; i++) {
    int a, b, t;
    cin >> a >> b >> t;
    g[a / k].pb(mp(mp(a % k, b % k), t));
  }
  for(int i = 0; i < o; i++) {
    ans[i] = -1;
    int a, b;
    cin >> a >> b;
    qq.pb(mp(mp(a, b), i));
  }
  kek(0, N / k, qq);
  for(int i = 0; i < o; i++) cout << ans[i] << '\n';
}
int main() {

  ios::sync_with_stdio(0); cin.tie(0);

  int t = 1;

  // cin >> t;

  while(t--) solve();

  return 0;
}
/*

*/

Subtask #1
7.0 / 7.0

# Verdict Execution time Memory Grader output
1 Correct 31 ms 14076 KB Output is correct
2 Correct 5 ms 11220 KB Output is correct
3 Correct 5 ms 11240 KB Output is correct
4 Correct 5 ms 11236 KB Output is correct
5 Correct 6 ms 11408 KB Output is correct
6 Correct 6 ms 11384 KB Output is correct
7 Correct 6 ms 11384 KB Output is correct
8 Correct 27 ms 14048 KB Output is correct
9 Correct 25 ms 13892 KB Output is correct
10 Correct 9 ms 11668 KB Output is correct

Subtask #2
10.0 / 10.0

# Verdict Execution time Memory Grader output
1 Correct 35 ms 9984 KB Output is correct
2 Correct 5 ms 11220 KB Output is correct
3 Correct 3 ms 6356 KB Output is correct
4 Correct 2 ms 4692 KB Output is correct
5 Correct 3 ms 3924 KB Output is correct
6 Correct 2 ms 3412 KB Output is correct
7 Correct 8 ms 12308 KB Output is correct
8 Correct 7 ms 7504 KB Output is correct
9 Correct 23 ms 14000 KB Output is correct
10 Correct 55 ms 10264 KB Output is correct
11 Correct 38 ms 10100 KB Output is correct
12 Correct 27 ms 7944 KB Output is correct
13 Correct 54 ms 8560 KB Output is correct
14 Correct 36 ms 8616 KB Output is correct
15 Correct 28 ms 6140 KB Output is correct
16 Correct 29 ms 6204 KB Output is correct

Subtask #3
8.0 / 8.0

# Verdict Execution time Memory Grader output
1 Correct 5 ms 11220 KB Output is correct
2 Correct 3 ms 6416 KB Output is correct
3 Correct 3 ms 4692 KB Output is correct
4 Correct 2 ms 3944 KB Output is correct
5 Correct 2 ms 3412 KB Output is correct
6 Correct 6 ms 11348 KB Output is correct
7 Correct 5 ms 6484 KB Output is correct
8 Correct 4 ms 3632 KB Output is correct
9 Correct 4 ms 4004 KB Output is correct
10 Correct 25 ms 13624 KB Output is correct
11 Correct 38 ms 9592 KB Output is correct
12 Correct 54 ms 9824 KB Output is correct
13 Correct 54 ms 10876 KB Output is correct
14 Correct 45 ms 8664 KB Output is correct
15 Correct 33 ms 6048 KB Output is correct
16 Correct 35 ms 6072 KB Output is correct

Subtask #4
31.0 / 31.0

# Verdict Execution time Memory Grader output
1 Correct 5 ms 11220 KB Output is correct
2 Correct 3 ms 6416 KB Output is correct
3 Correct 3 ms 4692 KB Output is correct
4 Correct 2 ms 3944 KB Output is correct
5 Correct 2 ms 3412 KB Output is correct
6 Correct 6 ms 11348 KB Output is correct
7 Correct 5 ms 6484 KB Output is correct
8 Correct 4 ms 3632 KB Output is correct
9 Correct 4 ms 4004 KB Output is correct
10 Correct 25 ms 13624 KB Output is correct
11 Correct 38 ms 9592 KB Output is correct
12 Correct 54 ms 9824 KB Output is correct
13 Correct 54 ms 10876 KB Output is correct
14 Correct 45 ms 8664 KB Output is correct
15 Correct 33 ms 6048 KB Output is correct
16 Correct 35 ms 6072 KB Output is correct
17 Correct 41 ms 9692 KB Output is correct
18 Correct 5 ms 11240 KB Output is correct
19 Correct 3 ms 6356 KB Output is correct
20 Correct 3 ms 4712 KB Output is correct
21 Correct 3 ms 3864 KB Output is correct
22 Correct 2 ms 3428 KB Output is correct
23 Correct 6 ms 11604 KB Output is correct
24 Correct 5 ms 6740 KB Output is correct
25 Correct 5 ms 3864 KB Output is correct
26 Correct 4 ms 4308 KB Output is correct
27 Correct 28 ms 13772 KB Output is correct
28 Correct 54 ms 10080 KB Output is correct
29 Correct 57 ms 11024 KB Output is correct
30 Correct 45 ms 8772 KB Output is correct

Subtask #5
44.0 / 44.0

# Verdict Execution time Memory Grader output
1 Correct 31 ms 14076 KB Output is correct
2 Correct 5 ms 11220 KB Output is correct
3 Correct 5 ms 11240 KB Output is correct
4 Correct 5 ms 11236 KB Output is correct
5 Correct 6 ms 11408 KB Output is correct
6 Correct 6 ms 11384 KB Output is correct
7 Correct 6 ms 11384 KB Output is correct
8 Correct 27 ms 14048 KB Output is correct
9 Correct 25 ms 13892 KB Output is correct
10 Correct 9 ms 11668 KB Output is correct
11 Correct 35 ms 9984 KB Output is correct
12 Correct 5 ms 11220 KB Output is correct
13 Correct 3 ms 6356 KB Output is correct
14 Correct 2 ms 4692 KB Output is correct
15 Correct 3 ms 3924 KB Output is correct
16 Correct 2 ms 3412 KB Output is correct
17 Correct 8 ms 12308 KB Output is correct
18 Correct 7 ms 7504 KB Output is correct
19 Correct 23 ms 14000 KB Output is correct
20 Correct 55 ms 10264 KB Output is correct
21 Correct 38 ms 10100 KB Output is correct
22 Correct 27 ms 7944 KB Output is correct
23 Correct 54 ms 8560 KB Output is correct
24 Correct 36 ms 8616 KB Output is correct
25 Correct 28 ms 6140 KB Output is correct
26 Correct 29 ms 6204 KB Output is correct
27 Correct 5 ms 11220 KB Output is correct
28 Correct 3 ms 6416 KB Output is correct
29 Correct 3 ms 4692 KB Output is correct
30 Correct 2 ms 3944 KB Output is correct
31 Correct 2 ms 3412 KB Output is correct
32 Correct 6 ms 11348 KB Output is correct
33 Correct 5 ms 6484 KB Output is correct
34 Correct 4 ms 3632 KB Output is correct
35 Correct 4 ms 4004 KB Output is correct
36 Correct 25 ms 13624 KB Output is correct
37 Correct 38 ms 9592 KB Output is correct
38 Correct 54 ms 9824 KB Output is correct
39 Correct 54 ms 10876 KB Output is correct
40 Correct 45 ms 8664 KB Output is correct
41 Correct 33 ms 6048 KB Output is correct
42 Correct 35 ms 6072 KB Output is correct
43 Correct 41 ms 9692 KB Output is correct
44 Correct 5 ms 11240 KB Output is correct
45 Correct 3 ms 6356 KB Output is correct
46 Correct 3 ms 4712 KB Output is correct
47 Correct 3 ms 3864 KB Output is correct
48 Correct 2 ms 3428 KB Output is correct
49 Correct 6 ms 11604 KB Output is correct
50 Correct 5 ms 6740 KB Output is correct
51 Correct 5 ms 3864 KB Output is correct
52 Correct 4 ms 4308 KB Output is correct
53 Correct 28 ms 13772 KB Output is correct
54 Correct 54 ms 10080 KB Output is correct
55 Correct 57 ms 11024 KB Output is correct
56 Correct 45 ms 8772 KB Output is correct
57 Correct 89 ms 10432 KB Output is correct
58 Correct 27 ms 14000 KB Output is correct
59 Correct 46 ms 10136 KB Output is correct