#include <bits/stdc++.h>
using namespace std;
#define TRACE(x) cerr << __LINE__ << ": " << #x << " = " << x << endl
#define _ << " _ " <<
template<class> struct is_container : false_type {};
template<class... Ts> struct is_container<vector<Ts...>> : true_type {};
template<class... Ts> struct is_container<map<Ts...>> : true_type {};
template<class... Ts> struct is_container<unordered_map<Ts...>> : true_type {};
template<class... Ts> struct is_container<set<Ts...>> : true_type {};
template<class... Ts> struct is_container<unordered_set<Ts...>> : true_type {};
template<class... Ts> struct is_container<multiset<Ts...>> : true_type {};
template<class... Ts> struct is_container<unordered_multiset<Ts...>> : true_type {};
template<class T, class = typename enable_if<is_container<T>::value>::type>
ostream& operator<<(ostream &o, T x) {
int f = 1;
o << "{";
for (auto y : x) {
o << (f ? "" : ", ") << y;
f = 0;
}
return o << "}";
}
template<class T, class U>
ostream& operator<<(ostream &o, pair<T, U> x) {
return o << "(" << x.first << ", " << x.second << ")";
}
#define fi first
#define se second
typedef long long ll;
typedef long double ld;
typedef pair<int, int> pii;
typedef pair<ll, ll> pll;
typedef vector<int> vi;
typedef vector<ll> vll;
const int INF = 1e9;
int main() {
ios_base::sync_with_stdio(false);
cin.tie(0);
int n, m;
cin >> n >> m;
vector<vi> e(n, vi(n, INF));
for (int i = 0; i < n; i++) e[i][i] = 0;
while (m--) {
int x, y, w;
cin >> x >> y >> w;
x--; y--;
e[x][y] = min(e[x][y], w);
}
int k;
cin >> k;
k = min(k, n);
auto sol = e;
while (--k) {
auto new_sol = sol;
for (int x = 0; x < n; x++)
for (int y = 0; y < n; y++)
for (int z = 0; z < n; z++)
new_sol[x][y] = min(new_sol[x][y], sol[x][z] + e[z][y]);
sol = new_sol;
}
int q;
cin >> q;
while (q--) {
int x, y;
cin >> x >> y;
x--; y--;
if (sol[x][y] == INF) sol[x][y] = -1;
cout << sol[x][y] << '\n';
}
return 0;
}
# |
Verdict |
Execution time |
Memory |
Grader output |
1 |
Correct |
0 ms |
208 KB |
Output is correct |
2 |
Correct |
0 ms |
204 KB |
Output is correct |
3 |
Correct |
0 ms |
204 KB |
Output is correct |
4 |
Correct |
0 ms |
204 KB |
Output is correct |
5 |
Correct |
0 ms |
204 KB |
Output is correct |
6 |
Correct |
1 ms |
204 KB |
Output is correct |
# |
Verdict |
Execution time |
Memory |
Grader output |
1 |
Correct |
1 ms |
332 KB |
Output is correct |
2 |
Correct |
2 ms |
332 KB |
Output is correct |
3 |
Correct |
3 ms |
332 KB |
Output is correct |
4 |
Correct |
3 ms |
284 KB |
Output is correct |
5 |
Correct |
2 ms |
332 KB |
Output is correct |
6 |
Correct |
3 ms |
332 KB |
Output is correct |
7 |
Correct |
3 ms |
332 KB |
Output is correct |
# |
Verdict |
Execution time |
Memory |
Grader output |
1 |
Correct |
0 ms |
208 KB |
Output is correct |
2 |
Correct |
0 ms |
204 KB |
Output is correct |
3 |
Correct |
0 ms |
204 KB |
Output is correct |
4 |
Correct |
0 ms |
204 KB |
Output is correct |
5 |
Correct |
0 ms |
204 KB |
Output is correct |
6 |
Correct |
1 ms |
204 KB |
Output is correct |
7 |
Correct |
11 ms |
380 KB |
Output is correct |
8 |
Correct |
28 ms |
352 KB |
Output is correct |
9 |
Correct |
3 ms |
332 KB |
Output is correct |
10 |
Correct |
16 ms |
332 KB |
Output is correct |
11 |
Correct |
6 ms |
332 KB |
Output is correct |
12 |
Correct |
20 ms |
380 KB |
Output is correct |
13 |
Correct |
94 ms |
324 KB |
Output is correct |
14 |
Correct |
115 ms |
332 KB |
Output is correct |
15 |
Correct |
117 ms |
332 KB |
Output is correct |
16 |
Correct |
90 ms |
308 KB |
Output is correct |
17 |
Correct |
93 ms |
312 KB |
Output is correct |
18 |
Correct |
88 ms |
324 KB |
Output is correct |
19 |
Correct |
116 ms |
324 KB |
Output is correct |
20 |
Correct |
99 ms |
308 KB |
Output is correct |
21 |
Correct |
99 ms |
312 KB |
Output is correct |
22 |
Correct |
97 ms |
312 KB |
Output is correct |
23 |
Correct |
95 ms |
332 KB |
Output is correct |
24 |
Correct |
98 ms |
324 KB |
Output is correct |
25 |
Correct |
88 ms |
324 KB |
Output is correct |
26 |
Correct |
99 ms |
312 KB |
Output is correct |
27 |
Correct |
98 ms |
308 KB |
Output is correct |
28 |
Correct |
94 ms |
324 KB |
Output is correct |
29 |
Correct |
85 ms |
308 KB |
Output is correct |
30 |
Correct |
92 ms |
312 KB |
Output is correct |
31 |
Correct |
133 ms |
320 KB |
Output is correct |
32 |
Correct |
114 ms |
356 KB |
Output is correct |
# |
Verdict |
Execution time |
Memory |
Grader output |
1 |
Correct |
0 ms |
208 KB |
Output is correct |
2 |
Correct |
0 ms |
204 KB |
Output is correct |
3 |
Correct |
0 ms |
204 KB |
Output is correct |
4 |
Correct |
0 ms |
204 KB |
Output is correct |
5 |
Correct |
0 ms |
204 KB |
Output is correct |
6 |
Correct |
1 ms |
204 KB |
Output is correct |
7 |
Correct |
1 ms |
332 KB |
Output is correct |
8 |
Correct |
2 ms |
332 KB |
Output is correct |
9 |
Correct |
3 ms |
332 KB |
Output is correct |
10 |
Correct |
3 ms |
284 KB |
Output is correct |
11 |
Correct |
2 ms |
332 KB |
Output is correct |
12 |
Correct |
3 ms |
332 KB |
Output is correct |
13 |
Correct |
3 ms |
332 KB |
Output is correct |
14 |
Correct |
11 ms |
380 KB |
Output is correct |
15 |
Correct |
28 ms |
352 KB |
Output is correct |
16 |
Correct |
3 ms |
332 KB |
Output is correct |
17 |
Correct |
16 ms |
332 KB |
Output is correct |
18 |
Correct |
6 ms |
332 KB |
Output is correct |
19 |
Correct |
20 ms |
380 KB |
Output is correct |
20 |
Correct |
94 ms |
324 KB |
Output is correct |
21 |
Correct |
115 ms |
332 KB |
Output is correct |
22 |
Correct |
117 ms |
332 KB |
Output is correct |
23 |
Correct |
90 ms |
308 KB |
Output is correct |
24 |
Correct |
93 ms |
312 KB |
Output is correct |
25 |
Correct |
88 ms |
324 KB |
Output is correct |
26 |
Correct |
116 ms |
324 KB |
Output is correct |
27 |
Correct |
99 ms |
308 KB |
Output is correct |
28 |
Correct |
99 ms |
312 KB |
Output is correct |
29 |
Correct |
97 ms |
312 KB |
Output is correct |
30 |
Correct |
95 ms |
332 KB |
Output is correct |
31 |
Correct |
98 ms |
324 KB |
Output is correct |
32 |
Correct |
88 ms |
324 KB |
Output is correct |
33 |
Correct |
99 ms |
312 KB |
Output is correct |
34 |
Correct |
98 ms |
308 KB |
Output is correct |
35 |
Correct |
94 ms |
324 KB |
Output is correct |
36 |
Correct |
85 ms |
308 KB |
Output is correct |
37 |
Correct |
92 ms |
312 KB |
Output is correct |
38 |
Correct |
133 ms |
320 KB |
Output is correct |
39 |
Correct |
114 ms |
356 KB |
Output is correct |
40 |
Correct |
8 ms |
376 KB |
Output is correct |
41 |
Correct |
32 ms |
452 KB |
Output is correct |
42 |
Correct |
5 ms |
332 KB |
Output is correct |
43 |
Correct |
47 ms |
372 KB |
Output is correct |
44 |
Correct |
6 ms |
332 KB |
Output is correct |
45 |
Correct |
40 ms |
332 KB |
Output is correct |
46 |
Correct |
84 ms |
312 KB |
Output is correct |
47 |
Correct |
102 ms |
324 KB |
Output is correct |
48 |
Correct |
128 ms |
312 KB |
Output is correct |
49 |
Correct |
109 ms |
312 KB |
Output is correct |
50 |
Correct |
95 ms |
308 KB |
Output is correct |
51 |
Correct |
94 ms |
352 KB |
Output is correct |
52 |
Correct |
86 ms |
332 KB |
Output is correct |
53 |
Correct |
116 ms |
352 KB |
Output is correct |
54 |
Correct |
90 ms |
316 KB |
Output is correct |
55 |
Correct |
109 ms |
312 KB |
Output is correct |
56 |
Correct |
110 ms |
352 KB |
Output is correct |
57 |
Correct |
112 ms |
308 KB |
Output is correct |
58 |
Correct |
88 ms |
324 KB |
Output is correct |
59 |
Correct |
98 ms |
332 KB |
Output is correct |
60 |
Correct |
117 ms |
312 KB |
Output is correct |
61 |
Correct |
116 ms |
320 KB |
Output is correct |
62 |
Correct |
86 ms |
312 KB |
Output is correct |
63 |
Correct |
91 ms |
312 KB |
Output is correct |
64 |
Correct |
101 ms |
312 KB |
Output is correct |
65 |
Correct |
109 ms |
320 KB |
Output is correct |