이 제출은 이전 버전의 oj.uz에서 채점하였습니다. 현재는 제출 당시와는 다른 서버에서 채점을 하기 때문에, 다시 제출하면 결과가 달라질 수도 있습니다.
#include <bits/stdc++.h>
using namespace std;
const int INF = 1000000000;
int main(){
int n, m;
cin >> n >> m;
vector<vector<pair<int, int>>> E(n);
for (int i = 0; i < m; i++){
int a, b, w;
cin >> a >> b >> w;
a--;
b--;
E[a].push_back(make_pair(w, b));
E[b].push_back(make_pair(w, a));
}
int k;
cin >> k;
vector<int> g(k);
for (int i = 0; i < k; i++){
cin >> g[i];
g[i]--;
}
vector<vector<int>> d(k, vector<int>(n, -1));
for (int i = 0; i < k; i++){
priority_queue<pair<int, int>, vector<pair<int, int>>, greater<pair<int, int>>> pq;
pq.push(make_pair(0, g[i]));
while (!pq.empty()){
int c = pq.top().first;
int v = pq.top().second;
pq.pop();
if (d[i][v] == -1){
d[i][v] = c;
for (auto P : E[v]){
int w = P.second;
if (d[i][w] == -1){
pq.push(make_pair(c + P.first, w));
}
}
}
}
}
int Q;
cin >> Q;
for (int i = 0; i < Q; i++){
int s, t;
cin >> s >> t;
s--;
t--;
int ans = INF;
for (int j = 0; j < k; j++){
ans = min(ans, d[j][s]);
ans = min(ans, d[j][t]);
}
cout << ans << endl;
}
}
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