# | Submission time | Handle | Problem | Language | Result | Execution time | Memory |
---|---|---|---|---|---|---|---|
332563 | 2020-12-02T21:41:01 Z | codemaster111 | Easter Eggs (info1cup17_eastereggs) | C++14 | 0 ms | 0 KB |
#include <bits/stdc++.h> #include "grader.h" using namespace std; #define pb push_back #define f first #define s second #define FOR(i, a, b) for(int i=(a); i<(b); ++i) #define trav(i, x) for(auto& i:x) const int mx = 550; vector<int> adj[mx], ans; void dfs(int i, int p) { ans.pb(i); trav(u, adj[i]) { if (u != p) dfs(u); } } int findEgg (int N, vector < pair < int, int > > bridges) { FOR(i, 0, mx) adj[i].clear(); trav(ii, bridges) adj[ii.f].pb(ii.s), adj[ii.s].pb(ii.f); dfs(1, 0); //2^9=512 // bin search on search vector for ans int lo = 0, hi = ans.size()-1; while (lo < hi) { int mid = (lo+hi)/2; vector<int> cur(ans.begin(), ans.begin()+mid); if (query(cur)) hi = mid; else lo = mid+1; } }