Submission #1290678

#	Time	Username	Problem	Language	Result	Execution time	Memory
1290678		kahoul	Arranging Shoes (IOI19_shoes)	C++20	50 / 100	1096 ms	2720 KiB

shoes

#include "shoes.h"
using namespace std;

long long count_swaps(vector<int> s) {
	vector<int> q = s;
	int ans = 0 ;

	while (!q.empty()) {
		int s = -(*q.begin());

		int dist = 0;
		auto ptr = ++q.begin();

		while (*ptr != s) {
			++ptr;
			dist++;
		}

		q.erase(ptr);
		q.erase(q.begin());
		ans += dist;

		if (s < 0) {
			ans++;
		}
	}

	return ans;
}

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