#include <iostream>
#include <vector>
#include <algorithm>
#include <array>
#include <deque>
#include <queue>
#define ll long long
using namespace std;
ll dist[100][100], C[100][100], X[100][100], l, r, mid;
ll n, m, k, a, b, c, cur, A[100][1000], B[100][1000];
int main() {
cin >> n >> m >> k;
for (int i=0; i<n; ++i) {
for (int j=0; j<n; ++j) {
dist[i][j] = 1e18;
}
}
for (int i=0; i<n; ++i) {
dist[i][i] = 0;
for (int j=0; j<k; ++j) {
cin >> A[i][j] >> B[i][j];
}
}
for (int i=0; i<m; ++i) {
cin >> a >> b >> c;
--a, --b;
dist[a][b] = min(dist[a][b], c);
}
for (int x=0; x<n; ++x) {
for (int i=0; i<n; ++i) {
for (int j=0; j<n; ++j) {
dist[i][j] = min(dist[i][x] + dist[x][j], dist[i][j]);
}
}
}
for (int i=0; i<n; ++i) {
for (int j=0; j<n; ++j) {
if (i != j) {
for (int x=0; x<k; ++x) {
if (min(A[i][x], B[j][x]) != -1) C[i][j] = max(C[i][j], B[j][x]-A[i][x]);
}
}
}
}
l = 0, r = 1e9;
while (l < r) {
mid = (l+r+1)/2;
for (int i=0; i<n; ++i) {
for (int j=0; j<n; ++j) {
X[i][j] = C[i][j] - mid * dist[i][j];
}
}
for (int x=0; x<n; ++x) {
for (int i=0; i<n; ++i) {
for (int j=0; j<n; ++j) {
X[i][j] = max(X[i][j], min((ll)1e18, X[i][x] + X[x][j]));
}
}
}
cur = -1e18;
for (int i=0; i<n; ++i) {
for (int j=0; j<n; ++j) {
if (i != j) {
cur = max(cur, X[i][j]+X[j][i]);
}
}
}
if (cur >= 0) l = mid;
else r = mid-1;
}
cout << l << '\n';
}
# |
Verdict |
Execution time |
Memory |
Grader output |
1 |
Correct |
88 ms |
2132 KB |
Output is correct |
2 |
Correct |
36 ms |
1372 KB |
Output is correct |
3 |
Correct |
38 ms |
1372 KB |
Output is correct |
4 |
Correct |
5 ms |
860 KB |
Output is correct |
5 |
Correct |
6 ms |
860 KB |
Output is correct |
6 |
Correct |
5 ms |
860 KB |
Output is correct |
7 |
Correct |
6 ms |
860 KB |
Output is correct |
8 |
Correct |
0 ms |
348 KB |
Output is correct |
9 |
Correct |
5 ms |
860 KB |
Output is correct |
10 |
Correct |
6 ms |
856 KB |
Output is correct |
11 |
Correct |
5 ms |
860 KB |
Output is correct |
12 |
Correct |
0 ms |
348 KB |
Output is correct |
13 |
Incorrect |
6 ms |
988 KB |
Output isn't correct |
14 |
Halted |
0 ms |
0 KB |
- |
# |
Verdict |
Execution time |
Memory |
Grader output |
1 |
Correct |
5 ms |
860 KB |
Output is correct |
2 |
Correct |
6 ms |
860 KB |
Output is correct |
3 |
Correct |
0 ms |
348 KB |
Output is correct |
4 |
Correct |
5 ms |
860 KB |
Output is correct |
5 |
Correct |
6 ms |
856 KB |
Output is correct |
6 |
Correct |
5 ms |
860 KB |
Output is correct |
7 |
Correct |
0 ms |
348 KB |
Output is correct |
8 |
Incorrect |
6 ms |
988 KB |
Output isn't correct |
9 |
Halted |
0 ms |
0 KB |
- |
# |
Verdict |
Execution time |
Memory |
Grader output |
1 |
Correct |
43 ms |
1372 KB |
Output is correct |
2 |
Correct |
113 ms |
3832 KB |
Output is correct |
3 |
Correct |
43 ms |
1392 KB |
Output is correct |
4 |
Correct |
46 ms |
1804 KB |
Output is correct |
5 |
Correct |
45 ms |
1628 KB |
Output is correct |
6 |
Correct |
41 ms |
1372 KB |
Output is correct |
7 |
Correct |
7 ms |
856 KB |
Output is correct |
8 |
Correct |
0 ms |
344 KB |
Output is correct |
9 |
Correct |
7 ms |
860 KB |
Output is correct |
10 |
Correct |
7 ms |
860 KB |
Output is correct |
11 |
Incorrect |
7 ms |
860 KB |
Output isn't correct |
12 |
Halted |
0 ms |
0 KB |
- |
# |
Verdict |
Execution time |
Memory |
Grader output |
1 |
Correct |
43 ms |
1372 KB |
Output is correct |
2 |
Correct |
113 ms |
3832 KB |
Output is correct |
3 |
Correct |
43 ms |
1392 KB |
Output is correct |
4 |
Correct |
46 ms |
1804 KB |
Output is correct |
5 |
Correct |
45 ms |
1628 KB |
Output is correct |
6 |
Correct |
41 ms |
1372 KB |
Output is correct |
7 |
Correct |
7 ms |
856 KB |
Output is correct |
8 |
Correct |
0 ms |
344 KB |
Output is correct |
9 |
Correct |
7 ms |
860 KB |
Output is correct |
10 |
Correct |
7 ms |
860 KB |
Output is correct |
11 |
Incorrect |
7 ms |
860 KB |
Output isn't correct |
12 |
Halted |
0 ms |
0 KB |
- |