Submission #285662

#	Time	Username	Problem	Language	Result	Execution time	Memory
285662		Otaku619	Arranging Shoes (IOI19_shoes)	C++14	Compilation error	0 ms	0 KiB

shoes

#include <bits/stdc++.h>
using namespace std;

int count_swaps(int v[], int n)
{
    int swa = 0;
    for (int i = 0; i < 2 * n; i += 2)
    {
        for (int j = i + 1; j < 2 * n; j++)
        {
            if (abs(v[j]) == abs(v[i]))
            {
                for (int k = j; k > i + 1; k--)
                    swap(v[k], v[k - 1]);
                swa += (j - 1 - i);
                if (v[i + 1] < 0)
                {
                    swap(v[i], v[i + 1]);
                    swa++;
                }
                break;
            }
        }
    }
    return swa;
}
int main()
{
    int n;
    cin >> n;
    int vect[2 * n];
    for (int i = 0; i < 2 * n; i++)
    {
        int j;
        cin >> j;
        vect[i] = j;
    }
    // for(int i=0;i<2*n;i++)
    // cout<<vect[i];
    cout << count_swaps(vect, n);
    return 0;
}

Compilation message (stderr)

/tmp/ccO5AQRv.o: In function `main':
grader.cpp:(.text.startup+0x0): multiple definition of `main'
/tmp/ccrjPfao.o:shoes.cpp:(.text.startup+0x0): first defined here
/tmp/ccO5AQRv.o: In function `main':
grader.cpp:(.text.startup+0x26a): undefined reference to `count_swaps(std::vector<int, std::allocator<int> >)'
collect2: error: ld returned 1 exit status