# | 제출 시각 | 아이디 | 문제 | 언어 | 결과 | 실행 시간 | 메모리 |
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918155 | 2024-01-29T13:19:05 Z | rahidilbayramli | Easter Eggs (info1cup17_eastereggs) | C++17 | 0 ms | 0 KB |
#include<bits/stdc++.h> #include "grader.h" #include<ext/pb_ds/assoc_container.hpp> #include<ext/pb_ds/tree_policy.hpp> #define ll long long #define ld long double #define vl vector<ll> #define vi vector<int> #define pii pair<int, int> #define pll pair<ll, ll> #define all(v) v.begin(), v.end() #define pb push_back #define f first #define s second using namespace std; using namespace __gnu_pbds; typedef tree<ll, null_type, less<ll>, rb_tree_tag, tree_order_statistics_node_update> ordered_set; const ll sz = 550; vector<int>g[sz]; vi order; int vis[sz]; void dfs(int node) { vis[node] = 1; order.pb(node); for(auto u : g[node]) { if(!vis[u]) dfs(u); } } int findEgg (int N, vector < pair < int, int > > bridges) { for(auto u : bridges) { int x = u.f; int y = u.s; g[x].pb(y); g[y].pb(x); } dfs(1); int l = 0, r = order.size() - 1; while(l <= r) { int mid = (l + r) / 2; int ans = query(order.begin(), order.begin()+mid); if(ans) r = mid - 1; else l = mid; } return order[l]; }