제출 #685354

#제출 시각아이디문제언어결과실행 시간메모리
685354irmuunThousands Islands (IOI22_islands)C++17
6.75 / 100
34 ms4412 KiB
#include<bits/stdc++.h> #include "islands.h" using namespace std; #define pb push_back variant<bool, vector<int>> find_journey(int N, int M, vector<int> U, vector<int> V){ if(N==2){ vector<int>v0,v1; for(int i=0;i<M;i++){ if(U[i]==0){ v0.pb(i); } else{ v1.pb(i); } } if(v0.size()<2||v1.size()<1){ return false; } return vector<int>{v0[0],v1[0],v0[1],v0[0],v1[0],v0[1]}; } if(N<=1000&&M%2==0){ vector<int>vec; for(int i=0;i<M;i+=2){ if(U[i]==0){ vec.pb(i); vec.pb(i+1); } if(U[i+1]==0){ vec.pb(i+1); vec.pb(i); } } if(vec.size()<4){ return false; } return vector<int>{vec[0],vec[1],vec[2],vec[3],vec[1],vec[0],vec[3],vec[2]}; } return false; }
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