Submission #1106317

#TimeUsernameProblemLanguageResultExecution timeMemory
1106317Lincito_31Parachute rings (IOI12_rings)C++17
0 / 100
39 ms34640 KiB
#include <bits/stdc++.h> using namespace std; int N; bool ciclo_xd=false; int t3=0; int t4=0; int inde_t4=0; set<int> inde_t3; vector<vector<int>> gra; vector<int> dsu; int find(int a){ if(dsu[a]==a){ return a; } return dsu[a]=find(dsu[a]); } bool unir(int a, int b){ a=find(a);b=find(b); if(a==b){ return false; } dsu[a]=b; return true; } void Init(int N_) { N=N_; dsu.resize(N); for(int i=0;i<N;i++){ dsu[i]=i; } gra.resize(N); } void Link(int A, int B) { A--;B--; if(!unir(A,B)){ ciclo_xd=true; } gra[A].push_back(B); if(gra[A].size()>=3){ t3++; inde_t3.insert(A); } if(gra[A].size()>=4){ inde_t4=A; t4++; } gra[B].push_back(A); if(gra[B].size()>=3){ t3++; inde_t3.insert(B); } if(gra[B].size()>=4){ inde_t4=B; t4++; } } void dfs(){ } int CountCritical(){ if(t4>=2){ return 0; } if(t3>=5){ return 0; } if(t4==1){ // si quito inde_t4 es un chain? }else if(t3>=1){ // si quito el inde_3 o sus vecinos sera un chain? } return N; } // esta mal la solucion xd
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