Submission #285493

#	Time	Username	Problem	Language	Result	Execution time	Memory
285493		MKopchev	Arranging Shoes (IOI19_shoes)	C++14	50 / 100	1083 ms	3320 KiB

shoes

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

const int nmax=2e5+42;

long long count_swaps(std::vector<int> s)
{
    long long outp=0;

	for(int i=0;i<s.size();i=i+2)
    {
        for(int j=i+1;j<s.size();j++)
        {
            if(s[i]+s[j]==0)
            {
                outp+=j-(i+1);
                for(int k=j-1;k>i;k--)
                    swap(s[k+1],s[k]);

                if(s[i]>0)outp++;
                break;
            }
        }
    }
    return outp;
}

Compilation message (stderr)

shoes.cpp: In function 'long long int count_swaps(std::vector<int>)':
shoes.cpp:11:15: 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=i+2)
      |              ~^~~~~~~~~
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(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