제출 #722867

#제출 시각아이디문제언어결과실행 시간메모리
722867GrandTiger1729Arranging Shoes (IOI19_shoes)C++17
50 / 100
1095 ms2652 KiB
#include "shoes.h" #include <bits/stdc++.h> using namespace std; long long count_swaps(vector<int> s){ auto a = s; int N = a.size(), n = N / 2; long long cnt = 0; for (int i = 0; i < N; i += 2){ int j = i; j = i + 1; while (j < N && a[j] != -a[i]) j++; while (j > i + 1){ swap(a[j], a[j - 1]); j--; cnt++; } if (a[i] > 0){ swap(a[i], a[i + 1]); cnt++; } } return cnt; }

컴파일 시 표준 에러 (stderr) 메시지

shoes.cpp: In function 'long long int count_swaps(std::vector<int>)':
shoes.cpp:7:23: warning: unused variable 'n' [-Wunused-variable]
    7 |     int N = a.size(), n = N / 2;
      |                       ^
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