Submission #595263

#TimeUsernameProblemLanguageResultExecution timeMemory
595263birthdaycakeGame (IOI14_game)C++17
15 / 100
36 ms47444 KiB
#include "game.h" #include<bits/stdc++.h> #define endl '\n' #define mod 1000000007 using namespace std; vector<int>cnt[2000001]; int adj[1501][1501]; int dsu[2000001],rnk[2000001]; set<pair<int,int>>d; int N; int Find(int x){ if(dsu[x] == x) return x; return dsu[x] = Find(dsu[x]); } void Unite(int a, int b){ a = Find(a); b = Find(b); if(rnk[a] < rnk[b]) swap(a,b); rnk[a] += rnk[b]; dsu[b] = a; for(auto s: cnt[b]){ adj[a][s] += adj[b][s]; } } void initialize(int n) { N = n; for(int i = 1; i <= n; i++) { dsu[i] = i; rnk[i] = 1; } } int hasEdge(int u, int v) { u++; v++; int set_a = Find(u), set_b = Find(v); if(set_a == set_b) return 0; vector<int>x,y; cnt[set_a].push_back(set_b); cnt[set_b].push_back(set_a); adj[set_a][set_b]++; adj[set_b][set_a]++; if(adj[set_a][set_b] != rnk[set_b] * rnk[set_a]) return 0; if(adj[set_b][set_a] != rnk[set_a] * rnk[set_b]) return 0; Unite(u,v); return 1; }
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