제출 #948014

#제출 시각아이디문제언어결과실행 시간메모리
948014studyArranging Shoes (IOI19_shoes)C++17
50 / 100
1071 ms11348 KiB
#include "shoes.h" #include <bits/stdc++.h> using namespace std; long long count_swaps(vector<int> s) { set<int> st; for (int i:s){ st.emplace(i); } if (st.size() == 2){ int crt = 0, ans = 0; for (int i=0; i<s.size(); ++i){ if (s[i] < 0){ ans += abs(crt-i); crt += 2; } } return ans; } int cnt=0, n = s.size(); for (int i=0; i<n; i += 2){ int idx = 0; for (int j=i+1; j<n; ++j){ if (s[i] == -s[j]){ idx = j; break; } } for (int j=idx; j>=i+2; --j){ swap(s[j],s[j-1]); ++cnt; } if (s[i] > 0){ ++cnt; } } return cnt; }

컴파일 시 표준 에러 (stderr) 메시지

shoes.cpp: In function 'long long int count_swaps(std::vector<int>)':
shoes.cpp:12:32: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<int>::size_type' {aka 'long unsigned int'} [-Wsign-compare]
   12 |                 for (int i=0; i<s.size(); ++i){
      |                               ~^~~~~~~~~
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