Submission #653893

#	Time	Username	Problem	Language	Result	Execution time	Memory
653893		aryan12	Arranging Shoes (IOI19_shoes)	C++17	10 / 100	1 ms	300 KiB

shoes

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

long long count_swaps(vector<int> A) 
{
	long long ans = 0;
	map<int, queue<int> > mp;
	for(int i = 0; i < A.size(); i++)
	{
		// cout << "holyfuck" << endl;
		if(mp[-A[i]].size() == 0)
		{
			mp[A[i]].push(i);
			continue;
		}
		int pos = mp[-A[i]].front();
		mp[-A[i]].pop();
		// cout << "i = " << i << ", pos = " << pos << endl;
		for(int j = i; j > pos + 1; j--)
		{
			swap(A[j], A[j - 1]);
			ans++;
		}
		if(A[pos] > A[pos + 1])
		{
			swap(A[pos], A[pos + 1]);
			ans++;
		}
	}
	return ans;
}

Compilation message (stderr)

shoes.cpp: In function 'long long int count_swaps(std::vector<int>)':
shoes.cpp:9:19: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<int>::size_type' {aka 'long unsigned int'} [-Wsign-compare]
    9 |  for(int i = 0; i < A.size(); i++)
      |                 ~~^~~~~~~~~~

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