제출 #558122

#제출 시각아이디문제언어결과실행 시간메모리
558122imalcokArranging Shoes (IOI19_shoes)C++17
10 / 100
1 ms304 KiB
#include "shoes.h"
#include <iostream>

using namespace std;

long long count_swaps(std::vector<int> S){
    long long c = 0;
    int g[S.size()] = {0};
    for (int i = 0; i < S.size(); i++)
    {
        if (g[i]) continue;
        else if (S[i] < 0){
            int j = i+1;
            while (S[j] != (-1)*S[i] || g[j]) j++;
            g[j] = 1;
            c += (long long)(j-i-1); 
        }
        else
        {
            int j = i+1;
            while(S[j] != (-1)*S[i] || g[j]) j++;
            g[j] = 1;
            c += (long long)(j-i);
        }
    }
    return c;
}

컴파일 시 표준 에러 (stderr) 메시지

shoes.cpp: In function 'long long int count_swaps(std::vector<int>)':
shoes.cpp:9:23: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<int>::size_type' {aka 'long unsigned int'} [-Wsign-compare]
    9 |     for (int i = 0; i < S.size(); i++)
      |                     ~~^~~~~~~~~~
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