Submission #633145

#	Time	Username	Problem	Language	Result	Execution time	Memory
633145		kkkkkkkk	Arranging Shoes (IOI19_shoes)	C++14	50 / 100	1077 ms	2248 KiB

shoes

#include "shoes.h"
#include <bits/stdc++.h>
 
using namespace std;
 
long long count_swaps(vector<int> s) 
{
    int n=s.size();
    if (n==2)
    {
        if (s[0]<0) return 0;
        else return 1;
    }
    long long ans=0;
    for (int i=0;i<s.size();i++)
    {
        for (int j=i+1;j<s.size();j++)
        {
            if (s[j]+s[i]==0)
            {
                if (s[i]>0)
                    ans+=j-i;
                else 
                    ans+=j-i-1;
                s.erase(s.begin()+j);
                break;
            }
        }
    }
    return ans;
}

Compilation message (stderr)

shoes.cpp: In function 'long long int count_swaps(std::vector<int>)':
shoes.cpp:15:19: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<int>::size_type' {aka 'long unsigned int'} [-Wsign-compare]
   15 |     for (int i=0;i<s.size();i++)
      |                  ~^~~~~~~~~
shoes.cpp:17:25: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<int>::size_type' {aka 'long unsigned int'} [-Wsign-compare]
   17 |         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