제출 #1057882

#제출 시각아이디문제언어결과실행 시간메모리
1057882noyancanturk수천개의 섬 (IOI22_islands)C++17
10 / 100
58 ms12668 KiB
#include "islands.h" #include<bits/stdc++.h> using namespace std; #define pb push_back using pii=pair<int,int>; int n,m; map<pii,int>mp; std::variant<bool, std::vector<int>> find_journey( int N, int M, std::vector<int> U, std::vector<int> V) { n=N,m=M; if(n==2){ vector<int>go,come; for(int i=0;i<m;i++){ if(!U[i])go.pb(i); else come.pb(i); } if(come.size()&&1<go.size()){ return vector<int>{go[0],come[0],go[1],go[0],come[0],go[1]}; } return false; } for(int i=0;i<m;i++){ mp[{U[i],V[i]}]=i; } if(mp.size()==n*(n-1)){ return vector<int>{mp[{0,1}],mp[{1,2}],mp[{2,1}],mp[{0,1}],mp[{0,2}],mp[{1,2}],mp[{2,1}],mp[{0,2}]}; } return false; }

컴파일 시 표준 에러 (stderr) 메시지

islands.cpp: In function 'std::variant<bool, std::vector<int, std::allocator<int> > > find_journey(int, int, std::vector<int>, std::vector<int>)':
islands.cpp:31:15: warning: comparison of integer expressions of different signedness: 'std::map<std::pair<int, int>, int>::size_type' {aka 'long unsigned int'} and 'int' [-Wsign-compare]
   31 |   if(mp.size()==n*(n-1)){
      |      ~~~~~~~~~^~~~~~~~~
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