#include<bits/stdc++.h>
using namespace std;
long long n, m, road[71][71], mi[71][71][71], inf=1e12;
int main(){
ios::sync_with_stdio(0);cin.tie(0);cout.tie(0);
//freopen("autobus.inp", "r", stdin);
//freopen("autobus.out", "w", stdout);
cin>>n>>m;
for(int i=1;i<=n;i++){
for(int j=1;j<=n;j++){
if(i==j)road[i][j]=0;
else {
road[i][j]=inf;
}
mi[i][j][0]=road[i][j];
}
}
for(int o=1;o<=m;o++){
long long a, b, v;
cin>>a>>b>>v;
road[a][b]=min(road[a][b], v);
mi[a][b][1]=road[a][b];
}
for(int k=1;k<n;k++){///toi da di dc n-1 thanh pho
for(int i=1;i<=n;i++){///thanh pho di
for(int j=1;j<=n;j++){///thanh pho den
mi[i][j][k]=mi[i][j][k-1];
for(int h=1;h<=n;h++)mi[i][j][k]=min(mi[i][j][k], mi[i][h][k-1]+road[h][j]);///i->j or i->h->j
}
}
}
long long k, q;
cin>>k>>q;
k=min(k, n-1);
for(int i=1;i<=q;i++){
long long a, b;
cin>>a>>b;
if(mi[a][b][k]<inf)cout<<mi[a][b][k]<<"\n";
else cout<<"-1\n";
}
return 0;
}
# |
결과 |
실행 시간 |
메모리 |
Grader output |
1 |
Correct |
1 ms |
344 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 |
348 KB |
Output is correct |
5 |
Correct |
0 ms |
348 KB |
Output is correct |
6 |
Correct |
0 ms |
348 KB |
Output is correct |
# |
결과 |
실행 시간 |
메모리 |
Grader output |
1 |
Correct |
18 ms |
3164 KB |
Output is correct |
2 |
Correct |
19 ms |
3272 KB |
Output is correct |
3 |
Correct |
21 ms |
3276 KB |
Output is correct |
4 |
Correct |
19 ms |
3164 KB |
Output is correct |
5 |
Correct |
19 ms |
3164 KB |
Output is correct |
6 |
Correct |
19 ms |
3340 KB |
Output is correct |
7 |
Correct |
24 ms |
3164 KB |
Output is correct |
# |
결과 |
실행 시간 |
메모리 |
Grader output |
1 |
Correct |
1 ms |
344 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 |
348 KB |
Output is correct |
5 |
Correct |
0 ms |
348 KB |
Output is correct |
6 |
Correct |
0 ms |
348 KB |
Output is correct |
7 |
Correct |
18 ms |
3280 KB |
Output is correct |
8 |
Correct |
19 ms |
3164 KB |
Output is correct |
9 |
Correct |
19 ms |
3164 KB |
Output is correct |
10 |
Correct |
20 ms |
3160 KB |
Output is correct |
11 |
Correct |
20 ms |
3160 KB |
Output is correct |
12 |
Correct |
19 ms |
3348 KB |
Output is correct |
13 |
Correct |
87 ms |
9296 KB |
Output is correct |
14 |
Correct |
90 ms |
9300 KB |
Output is correct |
15 |
Correct |
100 ms |
9300 KB |
Output is correct |
16 |
Correct |
81 ms |
9380 KB |
Output is correct |
17 |
Correct |
91 ms |
9300 KB |
Output is correct |
18 |
Correct |
84 ms |
9296 KB |
Output is correct |
19 |
Correct |
80 ms |
9296 KB |
Output is correct |
20 |
Correct |
91 ms |
9284 KB |
Output is correct |
21 |
Correct |
87 ms |
9300 KB |
Output is correct |
22 |
Correct |
86 ms |
9508 KB |
Output is correct |
23 |
Correct |
85 ms |
9296 KB |
Output is correct |
24 |
Correct |
86 ms |
9300 KB |
Output is correct |
25 |
Correct |
82 ms |
9556 KB |
Output is correct |
26 |
Correct |
84 ms |
9552 KB |
Output is correct |
27 |
Correct |
90 ms |
9552 KB |
Output is correct |
28 |
Correct |
93 ms |
9372 KB |
Output is correct |
29 |
Correct |
84 ms |
9296 KB |
Output is correct |
30 |
Correct |
90 ms |
9252 KB |
Output is correct |
31 |
Correct |
84 ms |
9300 KB |
Output is correct |
32 |
Correct |
79 ms |
9296 KB |
Output is correct |
# |
결과 |
실행 시간 |
메모리 |
Grader output |
1 |
Correct |
1 ms |
344 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 |
348 KB |
Output is correct |
5 |
Correct |
0 ms |
348 KB |
Output is correct |
6 |
Correct |
0 ms |
348 KB |
Output is correct |
7 |
Correct |
18 ms |
3164 KB |
Output is correct |
8 |
Correct |
19 ms |
3272 KB |
Output is correct |
9 |
Correct |
21 ms |
3276 KB |
Output is correct |
10 |
Correct |
19 ms |
3164 KB |
Output is correct |
11 |
Correct |
19 ms |
3164 KB |
Output is correct |
12 |
Correct |
19 ms |
3340 KB |
Output is correct |
13 |
Correct |
24 ms |
3164 KB |
Output is correct |
14 |
Correct |
18 ms |
3280 KB |
Output is correct |
15 |
Correct |
19 ms |
3164 KB |
Output is correct |
16 |
Correct |
19 ms |
3164 KB |
Output is correct |
17 |
Correct |
20 ms |
3160 KB |
Output is correct |
18 |
Correct |
20 ms |
3160 KB |
Output is correct |
19 |
Correct |
19 ms |
3348 KB |
Output is correct |
20 |
Correct |
87 ms |
9296 KB |
Output is correct |
21 |
Correct |
90 ms |
9300 KB |
Output is correct |
22 |
Correct |
100 ms |
9300 KB |
Output is correct |
23 |
Correct |
81 ms |
9380 KB |
Output is correct |
24 |
Correct |
91 ms |
9300 KB |
Output is correct |
25 |
Correct |
84 ms |
9296 KB |
Output is correct |
26 |
Correct |
80 ms |
9296 KB |
Output is correct |
27 |
Correct |
91 ms |
9284 KB |
Output is correct |
28 |
Correct |
87 ms |
9300 KB |
Output is correct |
29 |
Correct |
86 ms |
9508 KB |
Output is correct |
30 |
Correct |
85 ms |
9296 KB |
Output is correct |
31 |
Correct |
86 ms |
9300 KB |
Output is correct |
32 |
Correct |
82 ms |
9556 KB |
Output is correct |
33 |
Correct |
84 ms |
9552 KB |
Output is correct |
34 |
Correct |
90 ms |
9552 KB |
Output is correct |
35 |
Correct |
93 ms |
9372 KB |
Output is correct |
36 |
Correct |
84 ms |
9296 KB |
Output is correct |
37 |
Correct |
90 ms |
9252 KB |
Output is correct |
38 |
Correct |
84 ms |
9300 KB |
Output is correct |
39 |
Correct |
79 ms |
9296 KB |
Output is correct |
40 |
Correct |
19 ms |
3160 KB |
Output is correct |
41 |
Correct |
18 ms |
3280 KB |
Output is correct |
42 |
Correct |
20 ms |
3164 KB |
Output is correct |
43 |
Correct |
19 ms |
3164 KB |
Output is correct |
44 |
Correct |
19 ms |
3164 KB |
Output is correct |
45 |
Correct |
19 ms |
3336 KB |
Output is correct |
46 |
Correct |
84 ms |
9300 KB |
Output is correct |
47 |
Correct |
81 ms |
9296 KB |
Output is correct |
48 |
Correct |
83 ms |
9296 KB |
Output is correct |
49 |
Correct |
83 ms |
9296 KB |
Output is correct |
50 |
Correct |
83 ms |
9392 KB |
Output is correct |
51 |
Correct |
82 ms |
9296 KB |
Output is correct |
52 |
Correct |
86 ms |
9380 KB |
Output is correct |
53 |
Correct |
87 ms |
9300 KB |
Output is correct |
54 |
Correct |
88 ms |
9296 KB |
Output is correct |
55 |
Correct |
88 ms |
9520 KB |
Output is correct |
56 |
Correct |
83 ms |
9396 KB |
Output is correct |
57 |
Correct |
85 ms |
9300 KB |
Output is correct |
58 |
Correct |
86 ms |
9556 KB |
Output is correct |
59 |
Correct |
88 ms |
9508 KB |
Output is correct |
60 |
Correct |
86 ms |
9552 KB |
Output is correct |
61 |
Correct |
83 ms |
9552 KB |
Output is correct |
62 |
Correct |
81 ms |
9332 KB |
Output is correct |
63 |
Correct |
83 ms |
9120 KB |
Output is correct |
64 |
Correct |
80 ms |
9296 KB |
Output is correct |
65 |
Correct |
83 ms |
9300 KB |
Output is correct |