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#include <iostream>
#include <fstream>
using namespace std;
ifstream in("centruprim.in");
ofstream out("centruprim.out");
int main()
{
int n,b=1,i=1;
in>>n;
int cn=n;
n=n/10;
int nrcf=0;
while(cn>10)
{
nrcf+=1;
cn=cn/10;
}
int nrdv=1;
for(i=1; i<nrcf; i++)
b=b*10;
n=n%b;
for(i=1; i<=n/2; i++)
{
if(n%i==0)
nrdv++;
}
if(nrdv==2)
out<<"1";
else
out<<"0";
return 0;
}