# | Time | Username | Problem | Language | Result | Execution time | Memory |
---|---|---|---|---|---|---|---|
143263 | daniel920712 | Arranging Shoes (IOI19_shoes) | C++14 | 35 ms | 3640 KiB |
This submission is migrated from previous version of oj.uz, which used different machine for grading. This submission may have different result if resubmitted.
#include <iostream>
#include <stdio.h>
#include <vector>
#include <algorithm>
#include <assert.h>
using namespace std;
int S1[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=1e18,ans4=1e18,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/2;i++)
{
for(j=2*i;j<N;j++)
{
if(S1[j]<0)
{
t=0-S1[j];
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]==t)
{
for(k=j;k>2*i+1;k--)
{
ans1++;
swap(S1[k],S1[k-1]);
}
break;
}
}
}
ans2=0;
for(i=0;i<N;i++) S1[i]=S[i];
for(i=0;i<N/2;i++)
{
for(j=2*i;j<N;j++)
{
if(S1[j]>0)
{
t=0-S1[j];
break;
}
}
for(j=2*i;j<N;j++)
{
if(S1[j]==t)
{
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-t)
{
for(k=j;k>2*i+1;k--)
{
ans2++;
swap(S1[k],S1[k-1]);
}
break;
}
}
}
ans3=0;
for(i=0;i<N;i++) S1[i]=S[i];
for(i=0;i<N/2;i++)
{
for(j=N-2*i-1;j>=0;j--)
{
if(S1[j]>0)
{
t=0-S1[j];
for(k=j;k<N-2*i-1;k++)
{
ans3++;
swap(S1[k],S1[k+1]);
}
break;
}
}
for(j=N-2*i-2;j>=0;j--)
{
if(S1[j]==t)
{
for(k=j;k<N-2*i-2;k++)
{
ans3++;
swap(S1[k],S1[k+1]);
}
break;
}
}
/*for(j=0;j<N;j++) printf("%d ",S1[j]);
printf("\n");*/
}
//printf("%lld %lld %lld\n",ans1,ans2,ans3);
return min(min(ans1,ans2),min(ans3,ans4));
}
Compilation message (stderr)
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