#include <algorithm> #include <cctype> #include <climits> #include <cmath> #include <cstdio> #include <cstring> #include <iostream> #include <map> #include <set> #include <stack> #include <string> #include <vector> using namespace std; #define INF 99999 int main(void) { int n, m, k; cin >> n >> m >> k; int arr[n][n]; for (int i = 0; i < n; i++) for (int j = 0; j < n; j++) arr[i][j] = INF; for (int i = 0; i < m; i++) { int a, b, c; cin >> a >> b >> c; arr[a][b] = c; arr[b][a] = c; } for (int k = 0; k < n; k++) { for (int i = 0; i < n; i++) { for (int j = 0; j < n; j++) { if (arr[i][j] > arr[i][k] + arr[k][j]) { arr[i][j] = arr[i][k] + arr[k][j]; arr[j][i] = arr[i][k] + arr[k][j]; } } } } while (k--) { int a, b; cin >> a >> b; cout << arr[a][b] << endl; } } |
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