Submission #797700

#	Time	Username	Problem	Language	Result	Execution time	Memory
797700		izanbf	Arranging Shoes (IOI19_shoes)	C++14	50 / 100	1085 ms	3028 KiB

shoes

#include <bits/stdc++.h>
#include "shoes.h"

using namespace std;

using vi = vector<int>;
using ll = long long;

ll count_swaps(vi s) {
	ll cnt = 0;
	while (not s.empty()) {
		int i = 1;
		while (s[i] != -s[0]) {
			++i;
		}

		cnt += i-1;
		if (s[0] > 0) ++cnt;

		s.erase(s.begin() + i);
		s.erase(s.begin());
	}

	return cnt;
}

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