Submission #850727

#	Time	Username	Problem	Language	Result	Execution time	Memory
850727		AliHasanli	Arranging Shoes (IOI19_shoes)	C++17	50 / 100	1096 ms	1996 KiB

shoes

#include<iostream>
#include<vector>
using namespace std;
long long count_swaps(vector<int> s)
{
	if(s.size()==2)
    {
        if(s[0]>s[1])return 1;
        return 0;
    }
    long long ans=0;
    int find_matchshoe=1;
    for(int i=0;i<s.size();i+=2)
    {
        for(int j=i+1;j<s.size();j++)
            if(s[i]==-s[j])
            {
                find_matchshoe=j;
                break;
            }
        for(int j=find_matchshoe;j>i+1;j--)
        {
            swap(s[j],s[j-1]);
            ans++;
        }
        if(s[i]>s[i+1]){swap(s[i],s[i+1]);ans++;}
    }
	return ans;
}

Compilation message (stderr)

shoes.cpp: In function 'long long int count_swaps(std::vector<int>)':
shoes.cpp:13:18: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<int>::size_type' {aka 'long unsigned int'} [-Wsign-compare]
   13 |     for(int i=0;i<s.size();i+=2)
      |                 ~^~~~~~~~~
shoes.cpp:15:24: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<int>::size_type' {aka 'long unsigned int'} [-Wsign-compare]
   15 |         for(int j=i+1;j<s.size();j++)
      |                       ~^~~~~~~~~

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