Submission #1242556

#	Time	Username	Problem	Language	Result	Execution time	Memory
1242556		mohamedboukerche55	Arranging Shoes (IOI19_shoes)	C++20	Compilation error	0 ms	0 KiB

shoes

#include <bits/stdc++.h>

using namespace std;

long long count_swaps(vector<int>& S) 
{
    int n = S.size();

    vector<int> lf, ri;

    for (int i = 0; i < n; i++) 
    {
        if (S[i] > 0)
        {
           lf.push_back(i);
        } 
        else ri.push_back(i);
    }

    long long count = 0;

    int m = lf.size(); 

    int l = 0, r = 0;
    
    while (l < m && r < m) 
    {
        if (S[lf[l]] == -S[ri[r]]) 
        {
            count += abs(lf[l] - ri[r]);
            l++, r++;
        } else if (lf[l] < ri[r]) 
        {
            l++;
        }
        else 
        {
            r++;
        }
    }

    return count;
}
/*int main() {
	int n;
	assert(1 == scanf("%d", &n));
	vector<int> S(2 * n);
	for (int i = 0; i < 2 * n; i++)
		assert(1 == scanf("%d", &S[i]));
	fclose(stdin);

	long long result = count_swaps(S);

	printf("%lld\n", result);
	fclose(stdout);
	return 0;
}*/

Compilation message (stderr)

/usr/bin/ld: /tmp/ccR4JvMY.o: in function `main':
grader.cpp:(.text.startup+0x289): undefined reference to `count_swaps(std::vector<int, std::allocator<int> >)'
collect2: error: ld returned 1 exit status