Submission #368101

#	Time	Username	Problem	Language	Result	Execution time	Memory
368101		leinad2	Arranging Shoes (IOI19_shoes)	C++17	10 / 100	1086 ms	2668 KiB

shoes

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

Compilation message (stderr)

shoes.cpp: In function 'long long int count_swaps(std::vector<int>)':
shoes.cpp:8:14: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<int>::size_type' {aka 'long unsigned int'} [-Wsign-compare]
    8 |     for(i=0;i<s.size();i++)
      |             ~^~~~~~~~~
shoes.cpp:13:24: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<int>::size_type' {aka 'long unsigned int'} [-Wsign-compare]
   13 |             for(j=i+1;j<s.size();j++)
      |                       ~^~~~~~~~~
shoes.cpp:27:24: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<int>::size_type' {aka 'long unsigned int'} [-Wsign-compare]
   27 |             for(j=i+1;j<s.size();j++)
      |                       ~^~~~~~~~~

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