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Submission #703965

# Submission time Handle Problem Language Result Execution time Memory
703965 2023-03-01T06:37:15 Z willychan Autobus (COCI22_autobus) C++14
70 / 70
 106 ms 6940 KB 
#include<bits/stdc++.h>
using namespace std;
typedef long long ll;
//#include<bits/extc++.h>
//__gnu_pbds

vector<vector<ll> > dis;
int n,m;
vector<vector<ll> > ans;
void pow(int p) {
    ans.resize(n);
    for(int i=0; i<n; i++) ans[i].resize(n,1e17);
	for(int i=0;i<n;i++) ans[i][i]=0;
	vector<vector<ll> > og;
    while(p) {
        if(p&1) {
			og = ans;
            for(int i=0; i<n; i++) {
                for(int j=0; j<n; j++) {
                    for(int k=0; k<n; k++) {
                        og[i][j] = min(og[i][j],ans[i][k]+dis[k][j]);
                    }
                }
            }
            ans = og;
        }
		og = dis;
        for(int i=0; i<n; i++) {
            for(int j=0; j<n; j++) {
                for(int k=0; k<n; k++) {
                    og[i][j] = min(og[i][j],dis[i][k]+dis[k][j]);
                }
            }
        }
		dis = og;
		p>>=1;
    }


}


int main() {
    ios_base::sync_with_stdio(0),cin.tie(0),cout.tie(0);
    cin>>n>>m;
    dis.resize(n);
    for(int i=0; i<n; i++) dis[i].resize(n,1e17);
    for(int i=0; i<n; i++) dis[i][i]=0;
    for(int i=0; i<m; i++) {
        ll a,b,c;
        cin>>a>>b>>c;
		a--;b--;
        dis[a][b] = min(dis[a][b],c);
    }
	int k,q;cin>>k>>q;
	pow(k);
	while(q--){
		int a,b;cin>>a>>b;
		a--;b--;
		if(ans[a][b]>5e16){
			cout<<-1<<"\n";
		}else{
			cout<<ans[a][b]<<"\n";
		}
	}


    return 0;
}

Subtask #1
15.0 / 15.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 212 KB Output is correct
2 Correct 0 ms 324 KB Output is correct
3 Correct 0 ms 212 KB Output is correct
4 Correct 1 ms 212 KB Output is correct
5 Correct 0 ms 320 KB Output is correct
6 Correct 1 ms 212 KB Output is correct

Subtask #2
15.0 / 15.0

# Verdict Execution time Memory Grader output
1 Correct 2 ms 468 KB Output is correct
2 Correct 2 ms 468 KB Output is correct
3 Correct 3 ms 468 KB Output is correct
4 Correct 3 ms 468 KB Output is correct
5 Correct 3 ms 468 KB Output is correct
6 Correct 4 ms 468 KB Output is correct
7 Correct 4 ms 468 KB Output is correct

Subtask #3
25.0 / 25.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 212 KB Output is correct
2 Correct 0 ms 324 KB Output is correct
3 Correct 0 ms 212 KB Output is correct
4 Correct 1 ms 212 KB Output is correct
5 Correct 0 ms 320 KB Output is correct
6 Correct 1 ms 212 KB Output is correct
7 Correct 4 ms 468 KB Output is correct
8 Correct 5 ms 500 KB Output is correct
9 Correct 3 ms 460 KB Output is correct
10 Correct 5 ms 456 KB Output is correct
11 Correct 5 ms 468 KB Output is correct
12 Correct 6 ms 468 KB Output is correct
13 Correct 96 ms 6484 KB Output is correct
14 Correct 88 ms 6480 KB Output is correct
15 Correct 92 ms 6632 KB Output is correct
16 Correct 88 ms 6480 KB Output is correct
17 Correct 86 ms 6600 KB Output is correct
18 Correct 90 ms 6604 KB Output is correct
19 Correct 87 ms 6604 KB Output is correct
20 Correct 91 ms 6740 KB Output is correct
21 Correct 91 ms 6608 KB Output is correct
22 Correct 89 ms 6600 KB Output is correct
23 Correct 86 ms 6604 KB Output is correct
24 Correct 88 ms 6608 KB Output is correct
25 Correct 88 ms 6744 KB Output is correct
26 Correct 89 ms 6728 KB Output is correct
27 Correct 95 ms 6728 KB Output is correct
28 Correct 93 ms 6728 KB Output is correct
29 Correct 87 ms 6608 KB Output is correct
30 Correct 90 ms 6600 KB Output is correct
31 Correct 91 ms 6480 KB Output is correct
32 Correct 91 ms 6484 KB Output is correct

Subtask #4
15.0 / 15.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 212 KB Output is correct
2 Correct 0 ms 324 KB Output is correct
3 Correct 0 ms 212 KB Output is correct
4 Correct 1 ms 212 KB Output is correct
5 Correct 0 ms 320 KB Output is correct
6 Correct 1 ms 212 KB Output is correct
7 Correct 2 ms 468 KB Output is correct
8 Correct 2 ms 468 KB Output is correct
9 Correct 3 ms 468 KB Output is correct
10 Correct 3 ms 468 KB Output is correct
11 Correct 3 ms 468 KB Output is correct
12 Correct 4 ms 468 KB Output is correct
13 Correct 4 ms 468 KB Output is correct
14 Correct 4 ms 468 KB Output is correct
15 Correct 5 ms 500 KB Output is correct
16 Correct 3 ms 460 KB Output is correct
17 Correct 5 ms 456 KB Output is correct
18 Correct 5 ms 468 KB Output is correct
19 Correct 6 ms 468 KB Output is correct
20 Correct 96 ms 6484 KB Output is correct
21 Correct 88 ms 6480 KB Output is correct
22 Correct 92 ms 6632 KB Output is correct
23 Correct 88 ms 6480 KB Output is correct
24 Correct 86 ms 6600 KB Output is correct
25 Correct 90 ms 6604 KB Output is correct
26 Correct 87 ms 6604 KB Output is correct
27 Correct 91 ms 6740 KB Output is correct
28 Correct 91 ms 6608 KB Output is correct
29 Correct 89 ms 6600 KB Output is correct
30 Correct 86 ms 6604 KB Output is correct
31 Correct 88 ms 6608 KB Output is correct
32 Correct 88 ms 6744 KB Output is correct
33 Correct 89 ms 6728 KB Output is correct
34 Correct 95 ms 6728 KB Output is correct
35 Correct 93 ms 6728 KB Output is correct
36 Correct 87 ms 6608 KB Output is correct
37 Correct 90 ms 6600 KB Output is correct
38 Correct 91 ms 6480 KB Output is correct
39 Correct 91 ms 6484 KB Output is correct
40 Correct 5 ms 468 KB Output is correct
41 Correct 18 ms 460 KB Output is correct
42 Correct 3 ms 468 KB Output is correct
43 Correct 16 ms 480 KB Output is correct
44 Correct 4 ms 456 KB Output is correct
45 Correct 19 ms 440 KB Output is correct
46 Correct 87 ms 6480 KB Output is correct
47 Correct 87 ms 6472 KB Output is correct
48 Correct 92 ms 6484 KB Output is correct
49 Correct 104 ms 6480 KB Output is correct
50 Correct 88 ms 6608 KB Output is correct
51 Correct 87 ms 6600 KB Output is correct
52 Correct 86 ms 6600 KB Output is correct
53 Correct 102 ms 6600 KB Output is correct
54 Correct 89 ms 6604 KB Output is correct
55 Correct 90 ms 6608 KB Output is correct
56 Correct 89 ms 6604 KB Output is correct
57 Correct 104 ms 6732 KB Output is correct
58 Correct 97 ms 6744 KB Output is correct
59 Correct 103 ms 6940 KB Output is correct
60 Correct 93 ms 6728 KB Output is correct
61 Correct 106 ms 6740 KB Output is correct
62 Correct 85 ms 6428 KB Output is correct
63 Correct 93 ms 6484 KB Output is correct
64 Correct 94 ms 6468 KB Output is correct
65 Correct 100 ms 6468 KB Output is correct