Ti-am facut o sursa in C++. Succes!
#include <fstream>
using namespace std;
int n,nr,p,u,k,i,nnr;
ifstream f("fazanr.in");
ofstream g("fazanr.out");
int main()
{
f>>n;
f>>nr;
u=nr%10;
for(i=2;i<=n;i++)
{
f>>nr;
nnr=nr;
while(nr/10!=0) nr=nr/10;
p=nr;
if(u!=p) k++;
u=nnr%10;
}
g<<k;
f.close();
g.close();
return 0;
}