Submission #143411

#	Time	Username	Problem	Language	Result	Execution time	Memory
143411		daniel920712	Arranging Shoes (IOI19_shoes)	C++14	10 / 100	2 ms	380 KiB

shoes

#include <iostream>
#include <stdio.h>
#include <vector>
#include <algorithm>
#include <assert.h>

using namespace std;
int S1[1005];
int all[1005];
bool F(int a,int b)
{
    return a<b;
}
long long count_swaps(std::vector<int> S)
{
    long long ans1=0,ans2=0,ans3=0,ans4=0,N=S.size(),i,j,k,now=0;
    long long t;
    for(i=0;i<N;i++) S1[i]=S[i];
    for(i=0;i<N;i++) if(S1[i]>0) all[now++]=S1[i];
    for(i=0;i<N/2;i++)
    {
        for(j=2*i;j<N;j++)
        {
            if(S1[j]==0-all[i])
            {
                for(k=j;k>2*i;k--)
                {
                    ans1++;
                    swap(S1[k],S1[k-1]);

                }
                break;
            }
        }
        for(j=2*i+1;j<N;j++)
        {
            if(S1[j]==all[i])
            {
                for(k=j;k>2*i+1;k--)
                {
                    ans1++;
                    swap(S1[k],S1[k-1]);
                }
            }
            break;
        }
    }
    now=0;
    for(i=0;i<N;i++) S1[i]=S[i];
    for(i=0;i<N;i++) if(S1[i]<0) all[now++]=S1[i];
    for(i=0;i<N/2;i++)
    {
        for(j=2*i;j<N;j++)
        {
            if(S1[j]==all[i])
            {
                for(k=j;k>2*i;k--)
                {
                    ans2++;
                    swap(S1[k],S1[k-1]);

                }
                break;
            }
        }
        for(j=2*i+1;j<N;j++)
        {
            if(S1[j]==0-all[i])
            {
                for(k=j;k>2*i+1;k--)
                {
                    ans2++;
                    swap(S1[k],S1[k-1]);
                }
            }
            break;
        }
    }
    return min(ans1,ans2);
}

Compilation message (stderr)

shoes.cpp: In function 'long long int count_swaps(std::vector<int>)':
shoes.cpp:16:29: warning: unused variable 'ans3' [-Wunused-variable]
     long long ans1=0,ans2=0,ans3=0,ans4=0,N=S.size(),i,j,k,now=0;
                             ^~~~
shoes.cpp:16:36: warning: unused variable 'ans4' [-Wunused-variable]
     long long ans1=0,ans2=0,ans3=0,ans4=0,N=S.size(),i,j,k,now=0;
                                    ^~~~
shoes.cpp:17:15: warning: unused variable 't' [-Wunused-variable]
     long long t;
               ^

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