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Cod sursa(job #878673)
#include <fstream>
using namespace std;
ifstream fin("indep.in");
ofstream fout("indep.out");
#define NMAX 505
#define NMAX2 1005
long long n,v[NMAX],d[NMAX2];
void tipar();
void read()
{
fin>>n;
for(int i=1;i<=n;i++)
{
fin>>v[i];
}
}
int cmmdc(int a,int b)
{
while(a!=b)
{
if(a>b) a=a-b;
if(b>a) b=b-a;
}
return a;
}
void solve()
{
int i,j;
for(i=1;i<=n;i++)
{
for(j=1;j<1001;j++)
{
if(d[j])
{
d[cmmdc(j,v[i])] += d[j];
}
}
d[v[i]] ++;
//tipar();
}
}
void tipar()
{
for(int i=1;i<=20;i++) fout<<d[i]<<" ";
fout<<endl;
}
int main()
{
read();
solve();
fout<<d[1];
// for(int i=1;i<=NMAX2;i++)
// fout<<d[i]<<"\n";
//fout<<cmmdc(3,6);
}