Submission #431865

#	Time	Username	Problem	Language	Result	Execution time	Memory
431865		JUANDI321	Arranging Shoes (IOI19_shoes)	C++17	50 / 100	1022 ms	3948 KiB

shoes

#include "shoes.h"
#include <vector>
#include <deque>
#include <iostream>
using namespace std;

long long count_swaps(vector<int> s) 
{
	long long count = 0; 
	deque<int> sc(s.size());
	for(int i = 0; i<s.size(); i++)sc[i] = s[i];
	while(!sc.empty())
	{
		int x = sc.front();
		sc.pop_front();
		int pos = 0;
		for(int i = 0; i<sc.size(); i++)
		{
			if(sc[i] == x*-1)
			{
				pos = i;
				break;
			}
		}
		count+=pos+1;
		if(x < 0)count--;
		sc.erase(sc.begin()+pos);
	}
	return count;
}

Compilation message (stderr)

shoes.cpp: In function 'long long int count_swaps(std::vector<int>)':
shoes.cpp:11:18: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<int>::size_type' {aka 'long unsigned int'} [-Wsign-compare]
   11 |  for(int i = 0; i<s.size(); i++)sc[i] = s[i];
      |                 ~^~~~~~~~~
shoes.cpp:17:19: warning: comparison of integer expressions of different signedness: 'int' and 'std::deque<int>::size_type' {aka 'long unsigned int'} [-Wsign-compare]
   17 |   for(int i = 0; i<sc.size(); i++)
      |                  ~^~~~~~~~~~

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