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1180B.cpp
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#include<bits/stdc++.h>
using namespace std;
int main()
{
long long int n;
cin >> n ;
long long int ar[n];
for(int i=0; i<n; i++)
cin >> ar[i];
if(n%2==0)
{
for(int i=0; i<n; i++)
{
if(ar[i]>0)
{
ar[i] = -ar[i]-1;
}
}
for(int i=0; i<n; i++)
cout << ar[i] << " ";
}
else
{
sort(ar,ar+n);
long long int odd = 0;
for(int i=0; i<n; i++)
{
if(ar[i]<0)
{
odd++;
}
}
if(odd%2==0)
{
for(int i=0; i<n; i++)
cout << ar[i] << " ";
}
else
{
for(int i=0; i<n; i++)
{
if(ar[i]>0)
{
ar[i] = -ar[i]-1;
break;
}
}
for(int i=0; i<n; i++)
cout << ar[i] << " ";
}
}
return 0;
}