Submission #1143423

#	TimeUTC-0	Username	Problem	Language	Result	Execution time	Memory
1143423	2025-01-31 15:38:45	SmuggingSpun	Bridges (APIO19_bridges)	C++20	100 / 100	1868 ms	9440 KiB

bridges

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#include<bits/stdc++.h>
#define taskname "B"
using namespace std;
int n, m, q;
namespace sub1{
  void solve(){
    vector<int>u(m + 1), v(m + 1), w(m + 1);
    vector<vector<int>>g(n + 1);
    for(int i = 1; i <= m; i++){
      cin >> u[i] >> v[i] >> w[i];
      g[u[i]].emplace_back(i);
      g[v[i]].emplace_back(i);
    }
    cin >> q;
    for(int _ = 0; _ < q; _++){
      int _t, a, b;
      cin >> _t >> a >> b;
      if(_t == 1){
        w[a] = b;
      }
      else{
        vector<bool>vis(n + 1, false);
        vis[a] = true;
        queue<int>Q;
        Q.push(a);
        int ans = 1;
        while(!Q.empty()){
          int i = Q.front();
          Q.pop();
          for(int& index : g[i]){
 
 
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Compilation message (stderr)

bridges.cpp: In function 'int main()':
bridges.cpp:173:24: warning: ignoring return value of 'FILE* freopen(const char*, const char*, FILE*)' declared with attribute 'warn_unused_result' [-Wunused-result]
  173 |                 freopen(taskname".inp", "r", stdin);
      |                 ~~~~~~~^~~~~~~~~~~~~~~~~~~~~~~~~~~~

• Subtask 1: 13 / 13
• Subtask 2: 16 / 16
• Subtask 3: 17 / 17
• Subtask 4: 14 / 14
• Subtask 5: 13 / 13
• Subtask 6: 27 / 27