Submission #1109981

#TimeUsernameProblemLanguageResultExecution timeMemory
1109981ozner77Parachute rings (IOI12_rings)C++17
0 / 100
183 ms262144 KiB
#include <bits/stdc++.h> using namespace std; map<long long,long long> sumas; vector<vector<int>> V; vector<vector<int>> R; long long con1=0; int N; void Init(int N){ vector<int> V1(N,0); vector<int> J; for(int i=0;i<N;i++){ V.push_back(V1); R.push_back(J); } } void Link(int A,int B){ R[A].push_back(B); R[B].push_back(A); V[A][B]=1; V[B][A]=1; sumas[A]++; sumas[B]++; } void cadena(int i,int j,vector<int> visitados){ visitados[j]=1; if(V[i][j]==1){ if(sumas[j]==2){ con1++; } }else{ if(sumas[j]==1){ con1++; } } int jaja=R[j].size(); for(int k=0;k<jaja;k++){ if(visitados[R[j][k]]==0 && R[j][k]!=i){ cadena(i,R[j][k],visitados); } } } int CountCritical(){ long long res=0; for(int i=0;i<N;i++){ bool com=true; for(int j=0;j<N;j++){ if(i!=j){ if(V[i][j]==1){ if(sumas[j]==1){ continue; }else if(sumas[j]>3){ com=false; break; }else{ vector<int> visitados(N,0); con1=0; cadena(i,j,visitados); if(con1!=2){ com=false; break; } } }else{ if(sumas[j]==0){ continue; }else if(sumas[j]>2){ com=false; break; }else{ vector<int> visitados(N,0); con1=0; cadena(i,j,visitados); if(con1!=2){ com=false; break; } } } } } if(com){ res++; } } return res; }
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