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Cod sursa(job #555980)
#include<iostream>
#include<fstream>
using namespace std;
ifstream f("indep.in");
ofstream g("indep.out");
int i,j,k,n,a[10],x[10],s=0,p;
int div(int q)
{
for(j=2;j<=q;j++)
if(q%j==0)
break;
return j;
}
void afisare ()
{
int min;
int p=0,l=0;
min=1000;
for(j=1;j<=n;j++)
if(x[j]==1)
if(min>a[j])
min=a[j];
if(min!=1000)
min=div(min);
for(j=1;j<=n;j++)
{
if(x[j]==1)
l++;
if(x[j]==1 && a[j]%min==0)
p++;
}
if(p<l)
s++;
}
void back(int k)
{
int i;
for(i=0;i<=1;i++)
{
x[k]=i;
if(k==n)
afisare();
else back(k+1);
}
}
int main ()
{
f>>n;
for(i=1;i<=n;i++)
f>>a[i];
back(1);
g<<s;
g.close();
return 0;
}