제출 #1125213

#제출 시각아이디문제언어결과실행 시간메모리
1125213StefanSebez수천개의 섬 (IOI22_islands)C++20
10 / 100
28 ms6772 KiB
#include "islands.h" #include<bits/stdc++.h> #include <variant> #include <vector> using namespace std; #define fi first #define se second #define pb push_back #define ll long long #define ld long double const int N=1e5+50; vector<int>E[N]; std::variant<bool, std::vector<int>> find_journey(int n, int m, std::vector<int> U, std::vector<int> V) { if(n==2){ int deg[n+10]={0}; vector<int>nesto[n+10]; for(int i=0;i<m;i++){ deg[U[i]]++; nesto[U[i]].pb(i); } if(deg[0]<=1||deg[1]<=0) return false; return (vector<int>){nesto[0][0],nesto[1][0],nesto[0][1],nesto[0][0],nesto[1][0],nesto[0][1]}; } else{ int ind[10]; for(int i=0;i<m;i++){ if(U[i]==0&&V[i]==1) ind[0]=i; if(U[i]==1&&V[i]==0) ind[1]=i; if(U[i]==0&&V[i]==2) ind[2]=i; if(U[i]==2&&V[i]==0) ind[3]=i; } if(n==2) return false; return (vector<int>){ind[0],ind[1],ind[2],ind[3],ind[1],ind[0],ind[3],ind[2]}; } }
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