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Submission #867736

# Submission time Handle Problem Language Result Execution time Memory
867736 2023-10-29T10:56:17 Z epicci23 Autobus (COCI22_autobus) C++17
70 / 70
 145 ms 10168 KB 
#include "bits/stdc++.h"
using namespace std;
#define pb push_back
#define endl "\n" 
#define int long long
#define sz(x) ((int)(x).size())
#define all(x) (x).begin(),(x).end()

void solve(){
  int n,m;
  cin >> n >> m;
  int dp[n+5][n+5][n+5];
  int matr[n+5][n+5];

  memset(dp,-1,sizeof(dp));
  memset(matr,-1,sizeof(matr));

  for(int i=1;i<=m;i++){
  	int a,b,c;
  	cin >> a >> b >> c;
    if(matr[a][b]==-1) matr[a][b]=c;
    else matr[a][b]=min(matr[a][b],c);
  }

  for(int i=1;i<=n;i++) matr[i][i]=0;

  for(int i=1;i<=n;i++)
  	for(int j=1;j<=n;j++)
  	  dp[i][j][1]=matr[i][j];
  	
  int k,q;
  cin >> k >> q;

  for(int a=2;a<=min(k,n);a++){
    for(int i=1;i<=n;i++){
      for(int j=1;j<=n;j++){
        for(int u=1;u<=n;u++){
          if(dp[i][u][a-1] == -1 || matr[u][j] == -1) continue;
          if(dp[i][j][a]==-1) dp[i][j][a]=dp[i][u][a-1]+matr[u][j];
          else dp[i][j][a]=min(dp[i][j][a],dp[i][u][a-1]+matr[u][j]);	
        }
      }
    }
  }
  

  while(q--){
  	int a,b;
  	cin >> a >> b;
  	int ans=-1;
  	for(int i=1;i<=min(k,n);i++){
  	  if(dp[a][b][i]==-1) continue;
  	  if(ans==-1) ans=dp[a][b][i];
  	  else ans=min(ans,dp[a][b][i]);
  	}
  	cout << ans << endl;
  }
} 

int32_t main(){

  cin.tie(0); ios::sync_with_stdio(0);
  
  int t=1;//cin >> t;
  while(t--) solve();

  return 0;
}

Subtask #1
15.0 / 15.0

# Verdict Execution time Memory Grader output
1 Correct 1 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 456 KB Output is correct
5 Correct 0 ms 348 KB Output is correct
6 Correct 0 ms 348 KB Output is correct

Subtask #2
15.0 / 15.0

# Verdict Execution time Memory Grader output
1 Correct 3 ms 3676 KB Output is correct
2 Correct 4 ms 3816 KB Output is correct
3 Correct 6 ms 3676 KB Output is correct
4 Correct 4 ms 3676 KB Output is correct
5 Correct 5 ms 3836 KB Output is correct
6 Correct 5 ms 3676 KB Output is correct
7 Correct 7 ms 3796 KB Output is correct

Subtask #3
25.0 / 25.0

# Verdict Execution time Memory Grader output
1 Correct 1 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 456 KB Output is correct
5 Correct 0 ms 348 KB Output is correct
6 Correct 0 ms 348 KB Output is correct
7 Correct 23 ms 3676 KB Output is correct
8 Correct 59 ms 3788 KB Output is correct
9 Correct 7 ms 3676 KB Output is correct
10 Correct 45 ms 3676 KB Output is correct
11 Correct 16 ms 3676 KB Output is correct
12 Correct 60 ms 3852 KB Output is correct
13 Correct 74 ms 9920 KB Output is correct
14 Correct 75 ms 9908 KB Output is correct
15 Correct 104 ms 9780 KB Output is correct
16 Correct 88 ms 9804 KB Output is correct
17 Correct 88 ms 9784 KB Output is correct
18 Correct 76 ms 9812 KB Output is correct
19 Correct 145 ms 9808 KB Output is correct
20 Correct 94 ms 9784 KB Output is correct
21 Correct 84 ms 10036 KB Output is correct
22 Correct 83 ms 9916 KB Output is correct
23 Correct 83 ms 10052 KB Output is correct
24 Correct 93 ms 9812 KB Output is correct
25 Correct 88 ms 10068 KB Output is correct
26 Correct 84 ms 9908 KB Output is correct
27 Correct 88 ms 10048 KB Output is correct
28 Correct 86 ms 9912 KB Output is correct
29 Correct 82 ms 9908 KB Output is correct
30 Correct 81 ms 9812 KB Output is correct
31 Correct 94 ms 9780 KB Output is correct
32 Correct 114 ms 9868 KB Output is correct

Subtask #4
15.0 / 15.0

# Verdict Execution time Memory Grader output
1 Correct 1 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 456 KB Output is correct
5 Correct 0 ms 348 KB Output is correct
6 Correct 0 ms 348 KB Output is correct
7 Correct 3 ms 3676 KB Output is correct
8 Correct 4 ms 3816 KB Output is correct
9 Correct 6 ms 3676 KB Output is correct
10 Correct 4 ms 3676 KB Output is correct
11 Correct 5 ms 3836 KB Output is correct
12 Correct 5 ms 3676 KB Output is correct
13 Correct 7 ms 3796 KB Output is correct
14 Correct 23 ms 3676 KB Output is correct
15 Correct 59 ms 3788 KB Output is correct
16 Correct 7 ms 3676 KB Output is correct
17 Correct 45 ms 3676 KB Output is correct
18 Correct 16 ms 3676 KB Output is correct
19 Correct 60 ms 3852 KB Output is correct
20 Correct 74 ms 9920 KB Output is correct
21 Correct 75 ms 9908 KB Output is correct
22 Correct 104 ms 9780 KB Output is correct
23 Correct 88 ms 9804 KB Output is correct
24 Correct 88 ms 9784 KB Output is correct
25 Correct 76 ms 9812 KB Output is correct
26 Correct 145 ms 9808 KB Output is correct
27 Correct 94 ms 9784 KB Output is correct
28 Correct 84 ms 10036 KB Output is correct
29 Correct 83 ms 9916 KB Output is correct
30 Correct 83 ms 10052 KB Output is correct
31 Correct 93 ms 9812 KB Output is correct
32 Correct 88 ms 10068 KB Output is correct
33 Correct 84 ms 9908 KB Output is correct
34 Correct 88 ms 10048 KB Output is correct
35 Correct 86 ms 9912 KB Output is correct
36 Correct 82 ms 9908 KB Output is correct
37 Correct 81 ms 9812 KB Output is correct
38 Correct 94 ms 9780 KB Output is correct
39 Correct 114 ms 9868 KB Output is correct
40 Correct 17 ms 3672 KB Output is correct
41 Correct 66 ms 3788 KB Output is correct
42 Correct 11 ms 3676 KB Output is correct
43 Correct 78 ms 3812 KB Output is correct
44 Correct 16 ms 3676 KB Output is correct
45 Correct 87 ms 3676 KB Output is correct
46 Correct 76 ms 9812 KB Output is correct
47 Correct 91 ms 9796 KB Output is correct
48 Correct 90 ms 10036 KB Output is correct
49 Correct 113 ms 9912 KB Output is correct
50 Correct 75 ms 9920 KB Output is correct
51 Correct 84 ms 9908 KB Output is correct
52 Correct 75 ms 9812 KB Output is correct
53 Correct 111 ms 9808 KB Output is correct
54 Correct 79 ms 9916 KB Output is correct
55 Correct 80 ms 10064 KB Output is correct
56 Correct 112 ms 10040 KB Output is correct
57 Correct 111 ms 10032 KB Output is correct
58 Correct 80 ms 10068 KB Output is correct
59 Correct 91 ms 10048 KB Output is correct
60 Correct 105 ms 10068 KB Output is correct
61 Correct 119 ms 10168 KB Output is correct
62 Correct 74 ms 9812 KB Output is correct
63 Correct 82 ms 9656 KB Output is correct
64 Correct 93 ms 9868 KB Output is correct
65 Correct 114 ms 10068 KB Output is correct