#include <iostream>
using namespace std;
int main ()
{
int a,n,m[n],b,i,p=b-1,br=0;
cin>>b;
{
	cin>>p;

for (i=m[n]-1;i<=0;i++)
if (m[n]>m[n]+1) 

br++;
}
cout<<br<<endl;
return 0;
}
