Submission #526047

#	Time	Username	Problem	Language	Result	Execution time	Memory
526047		benjaminkleyn	Arranging Shoes (IOI19_shoes)	C++17	Compilation error	0 ms	0 KiB

This submission is migrated from previous version of oj.uz, which used different machine for grading. This submission may have different result if resubmitted.

shoes

#include "shoes.h"

long long count_swaps(std::vector<int> s) {
	int n = s.size() / 2;
	if (n == 1) return (s[0] > 0);
	bool samesize = true;
	for (int i = 0; i < 2 * n; i++)
		if (s[i] != s[0])
		{
			samesize = false;
			break;
		}
	if (samesize)
	{
		std::vector<int> lefts;
		for (int i = 0; i < 2 * n; i++)
			if (s[i] < 0) lefts.push_back(i);

		int res = 0;
		for (int i = 0; i < n; i++)
			res += abs(lefts[i] - i * 2);
		return res;
	}
	return 1;
}

Compilation message (stderr)

shoes.cpp: In function 'long long int count_swaps(std::vector<int>)':
shoes.cpp:21:11: error: 'abs' was not declared in this scope
   21 |    res += abs(lefts[i] - i * 2);
      |           ^~~