Submission #294638

#	Time	Username	Problem	Language	Result	Execution time	Memory
294638		mode149256	Arranging Shoes (IOI19_shoes)	C++14	10 / 100	1085 ms	2304 KiB

shoes

#include<bits/stdc++.h>
#include "shoes.h"
using namespace std;

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

ll count_swaps(vi s) {
	ll ats = 0;
	int N = (int)s.size();
	for (int i = 0; i < N; ++i)
	{
		if (s[i] > 0) {
			int nx = i + 1;
			while (s[nx] > 0) nx++;
			int val = s[nx];
			s.erase(s.begin() + nx);
			s.insert(s.begin() + i, val);
			ats += nx - i;
		}

		assert(s[i] < 0);
		// s[i] < 0
		int nx = i + 1;
		while (-s[i] != s[nx]) nx++;

		ats += nx - (i + 1);
		s.erase(s.begin() + nx);
		s.insert(s.begin() + i + 1, -s[i]);
		i++;
	}
	return ats;
}

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