제출 #994320

#제출 시각아이디문제언어결과실행 시간메모리
994320cpdreamerArranging Shoes (IOI19_shoes)C++17
50 / 100
1081 ms1996 KiB
#include "shoes.h" #include <bits/stdc++.h> using namespace std; long long count_swaps(vector<int> s) { int n=(int)s.size(); long long c=0; for(int i=0;i<n-1;i+=2){ if(-s[i]==s[i+1]){ if(s[i]>0) { swap(s[i], s[i + 1]); c++; } } else{ int index; for(int j=i+1;j<n;j++){ if(s[j]==-s[i]){ index=j; break; } } for(int j=index;j>i+1;j--){ swap(s[j],s[j-1]); c++; } if(s[i]>0){ swap(s[i],s[i+1]); c++; } } } return c; }

컴파일 시 표준 에러 (stderr) 메시지

shoes.cpp: In function 'long long int count_swaps(std::vector<int>)':
shoes.cpp:24:25: warning: 'index' may be used uninitialized in this function [-Wmaybe-uninitialized]
   24 |                 swap(s[j],s[j-1]);
      |                         ^
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