#include <bits/stdc++.h>
using namespace std;
#define int long long
#define ff first
#define ss second
#define all(a) a.begin(), a.end()
const int N = 5e4;
const int mod = 1e17;
vector< pair<int, int> > g[N];
int k, n, m, q;
main(){
ios::sync_with_stdio(0);
cin.tie(0); cout.tie(0);
cin >> k >> n >> m >> q;
vector<int> dis(n, mod), parent(n, -1);
for(int i = 0;i < m; i++){
int a, b, w; cin >> a >> b >> w;
g[a].push_back({b, w});
}
vector<pair<int, int> > Q;
int z = 0;
for(int i = 0;i < q; i++){
int a, b; cin >> a >> b;
z+= (a == 0);
Q.push_back({a, b});
}
dis[0] = 0;
for(int i = 0; i < n; i++){
for(auto [to, w] : g[i]){
if(dis[to] > dis[i] + w){
dis[to] = dis[i] + w;
parent[to] = i;
}
}
}
if(z == q){
for(auto [a, b] : Q){
if(a == b){
cout << 0 << '\n';
continue;
}
if(dis[b] >= mod) cout << "-1" << '\n';
else cout << dis[b]<< '\n';
}
return 0;
}
for(auto [a, b] : Q){
if(a == b){
cout << 0 << '\n';
continue;
}
for(int i = 0;i < n; i++) dis[i] = mod;
dis[a] = 0;
for(int i = a; i < n; i++){
for(auto [to, w] : g[i]){
if(dis[to] > dis[i] + w){
dis[to] = dis[i] + w;
}
}
}
if(dis[b] >= mod) cout << "-1\n";
else cout << dis[b] << '\n';
}
return 0;
}
Compilation message
toll.cpp:12:1: warning: ISO C++ forbids declaration of 'main' with no type [-Wreturn-type]
12 | main(){
| ^~~~
# |
Verdict |
Execution time |
Memory |
Grader output |
1 |
Correct |
1393 ms |
4572 KB |
Output is correct |
2 |
Correct |
1 ms |
1628 KB |
Output is correct |
3 |
Correct |
1 ms |
1372 KB |
Output is correct |
4 |
Correct |
1 ms |
1372 KB |
Output is correct |
5 |
Correct |
3 ms |
1628 KB |
Output is correct |
6 |
Correct |
3 ms |
1628 KB |
Output is correct |
7 |
Correct |
3 ms |
1628 KB |
Output is correct |
8 |
Correct |
1143 ms |
4292 KB |
Output is correct |
9 |
Correct |
1280 ms |
4204 KB |
Output is correct |
10 |
Correct |
537 ms |
2736 KB |
Output is correct |
# |
Verdict |
Execution time |
Memory |
Grader output |
1 |
Correct |
24 ms |
5248 KB |
Output is correct |
2 |
Correct |
1 ms |
1624 KB |
Output is correct |
3 |
Correct |
1 ms |
1628 KB |
Output is correct |
4 |
Correct |
1 ms |
1416 KB |
Output is correct |
5 |
Correct |
1 ms |
1624 KB |
Output is correct |
6 |
Correct |
1 ms |
1628 KB |
Output is correct |
7 |
Correct |
2 ms |
2032 KB |
Output is correct |
8 |
Correct |
3 ms |
2140 KB |
Output is correct |
9 |
Correct |
14 ms |
4956 KB |
Output is correct |
10 |
Correct |
37 ms |
8196 KB |
Output is correct |
11 |
Correct |
27 ms |
6608 KB |
Output is correct |
12 |
Correct |
20 ms |
5720 KB |
Output is correct |
13 |
Correct |
37 ms |
8528 KB |
Output is correct |
14 |
Correct |
26 ms |
6000 KB |
Output is correct |
15 |
Correct |
24 ms |
5112 KB |
Output is correct |
16 |
Correct |
19 ms |
5212 KB |
Output is correct |
# |
Verdict |
Execution time |
Memory |
Grader output |
1 |
Correct |
1 ms |
1628 KB |
Output is correct |
2 |
Correct |
1 ms |
1628 KB |
Output is correct |
3 |
Correct |
1 ms |
1628 KB |
Output is correct |
4 |
Correct |
1 ms |
1628 KB |
Output is correct |
5 |
Correct |
1 ms |
1372 KB |
Output is correct |
6 |
Correct |
1 ms |
1628 KB |
Output is correct |
7 |
Correct |
1 ms |
1628 KB |
Output is correct |
8 |
Correct |
2 ms |
1628 KB |
Output is correct |
9 |
Correct |
2 ms |
1628 KB |
Output is correct |
10 |
Correct |
24 ms |
3928 KB |
Output is correct |
11 |
Correct |
60 ms |
4932 KB |
Output is correct |
12 |
Correct |
92 ms |
6584 KB |
Output is correct |
13 |
Correct |
91 ms |
6748 KB |
Output is correct |
14 |
Correct |
83 ms |
5580 KB |
Output is correct |
15 |
Correct |
59 ms |
3932 KB |
Output is correct |
16 |
Correct |
59 ms |
3932 KB |
Output is correct |
# |
Verdict |
Execution time |
Memory |
Grader output |
1 |
Correct |
1 ms |
1628 KB |
Output is correct |
2 |
Correct |
1 ms |
1628 KB |
Output is correct |
3 |
Correct |
1 ms |
1628 KB |
Output is correct |
4 |
Correct |
1 ms |
1628 KB |
Output is correct |
5 |
Correct |
1 ms |
1372 KB |
Output is correct |
6 |
Correct |
1 ms |
1628 KB |
Output is correct |
7 |
Correct |
1 ms |
1628 KB |
Output is correct |
8 |
Correct |
2 ms |
1628 KB |
Output is correct |
9 |
Correct |
2 ms |
1628 KB |
Output is correct |
10 |
Correct |
24 ms |
3928 KB |
Output is correct |
11 |
Correct |
60 ms |
4932 KB |
Output is correct |
12 |
Correct |
92 ms |
6584 KB |
Output is correct |
13 |
Correct |
91 ms |
6748 KB |
Output is correct |
14 |
Correct |
83 ms |
5580 KB |
Output is correct |
15 |
Correct |
59 ms |
3932 KB |
Output is correct |
16 |
Correct |
59 ms |
3932 KB |
Output is correct |
17 |
Correct |
1112 ms |
5080 KB |
Output is correct |
18 |
Correct |
1 ms |
1628 KB |
Output is correct |
19 |
Correct |
1 ms |
1372 KB |
Output is correct |
20 |
Correct |
1 ms |
1372 KB |
Output is correct |
21 |
Correct |
1 ms |
1628 KB |
Output is correct |
22 |
Correct |
1 ms |
1624 KB |
Output is correct |
23 |
Correct |
7 ms |
1648 KB |
Output is correct |
24 |
Correct |
10 ms |
1844 KB |
Output is correct |
25 |
Correct |
20 ms |
1880 KB |
Output is correct |
26 |
Correct |
16 ms |
1628 KB |
Output is correct |
27 |
Correct |
387 ms |
4096 KB |
Output is correct |
28 |
Correct |
1732 ms |
6492 KB |
Output is correct |
29 |
Correct |
1671 ms |
6888 KB |
Output is correct |
30 |
Correct |
1230 ms |
5684 KB |
Output is correct |
# |
Verdict |
Execution time |
Memory |
Grader output |
1 |
Correct |
1393 ms |
4572 KB |
Output is correct |
2 |
Correct |
1 ms |
1628 KB |
Output is correct |
3 |
Correct |
1 ms |
1372 KB |
Output is correct |
4 |
Correct |
1 ms |
1372 KB |
Output is correct |
5 |
Correct |
3 ms |
1628 KB |
Output is correct |
6 |
Correct |
3 ms |
1628 KB |
Output is correct |
7 |
Correct |
3 ms |
1628 KB |
Output is correct |
8 |
Correct |
1143 ms |
4292 KB |
Output is correct |
9 |
Correct |
1280 ms |
4204 KB |
Output is correct |
10 |
Correct |
537 ms |
2736 KB |
Output is correct |
11 |
Correct |
24 ms |
5248 KB |
Output is correct |
12 |
Correct |
1 ms |
1624 KB |
Output is correct |
13 |
Correct |
1 ms |
1628 KB |
Output is correct |
14 |
Correct |
1 ms |
1416 KB |
Output is correct |
15 |
Correct |
1 ms |
1624 KB |
Output is correct |
16 |
Correct |
1 ms |
1628 KB |
Output is correct |
17 |
Correct |
2 ms |
2032 KB |
Output is correct |
18 |
Correct |
3 ms |
2140 KB |
Output is correct |
19 |
Correct |
14 ms |
4956 KB |
Output is correct |
20 |
Correct |
37 ms |
8196 KB |
Output is correct |
21 |
Correct |
27 ms |
6608 KB |
Output is correct |
22 |
Correct |
20 ms |
5720 KB |
Output is correct |
23 |
Correct |
37 ms |
8528 KB |
Output is correct |
24 |
Correct |
26 ms |
6000 KB |
Output is correct |
25 |
Correct |
24 ms |
5112 KB |
Output is correct |
26 |
Correct |
19 ms |
5212 KB |
Output is correct |
27 |
Correct |
1 ms |
1628 KB |
Output is correct |
28 |
Correct |
1 ms |
1628 KB |
Output is correct |
29 |
Correct |
1 ms |
1628 KB |
Output is correct |
30 |
Correct |
1 ms |
1628 KB |
Output is correct |
31 |
Correct |
1 ms |
1372 KB |
Output is correct |
32 |
Correct |
1 ms |
1628 KB |
Output is correct |
33 |
Correct |
1 ms |
1628 KB |
Output is correct |
34 |
Correct |
2 ms |
1628 KB |
Output is correct |
35 |
Correct |
2 ms |
1628 KB |
Output is correct |
36 |
Correct |
24 ms |
3928 KB |
Output is correct |
37 |
Correct |
60 ms |
4932 KB |
Output is correct |
38 |
Correct |
92 ms |
6584 KB |
Output is correct |
39 |
Correct |
91 ms |
6748 KB |
Output is correct |
40 |
Correct |
83 ms |
5580 KB |
Output is correct |
41 |
Correct |
59 ms |
3932 KB |
Output is correct |
42 |
Correct |
59 ms |
3932 KB |
Output is correct |
43 |
Correct |
1112 ms |
5080 KB |
Output is correct |
44 |
Correct |
1 ms |
1628 KB |
Output is correct |
45 |
Correct |
1 ms |
1372 KB |
Output is correct |
46 |
Correct |
1 ms |
1372 KB |
Output is correct |
47 |
Correct |
1 ms |
1628 KB |
Output is correct |
48 |
Correct |
1 ms |
1624 KB |
Output is correct |
49 |
Correct |
7 ms |
1648 KB |
Output is correct |
50 |
Correct |
10 ms |
1844 KB |
Output is correct |
51 |
Correct |
20 ms |
1880 KB |
Output is correct |
52 |
Correct |
16 ms |
1628 KB |
Output is correct |
53 |
Correct |
387 ms |
4096 KB |
Output is correct |
54 |
Correct |
1732 ms |
6492 KB |
Output is correct |
55 |
Correct |
1671 ms |
6888 KB |
Output is correct |
56 |
Correct |
1230 ms |
5684 KB |
Output is correct |
57 |
Execution timed out |
3051 ms |
9096 KB |
Time limit exceeded |
58 |
Halted |
0 ms |
0 KB |
- |