Submission #282342

#	Time	Username	Problem	Language	Result	Execution time	Memory
282342		GREGOIRELC	Arranging Shoes (IOI19_shoes)	C++14	15 / 100	31 ms	3192 KiB

shoes

#include "shoes.h"

long long count_swaps(std::vector<int> s)
{
	long long N = (long long)s.size();
	N /= 2;
	long long r = N * (N - 1) / 2;
	return r;
}

• Subtask 1: 0 / 10
• Subtask 2: 0 / 20
• Subtask 3: 0 / 20
• Subtask 4: 15 / 15
• Subtask 5: 0 / 20
• Subtask 6: 0 / 15