Rezolvare in C++
int main () {
int n,i,x,uc,exista=0;
cin>>n;
for ( i=1;i<=n;i++)
{
nr = 1;
cin>>x;
uc = x%10;
x = x/10;
while ( x>=0)
{
if(x%10!=uc) nr=0;
x = x/10;
}
if ( nr==1 ) exista ++;
}
If(exista>=1) cout<<"exista";
else cout<<"nu exista";
return 0; }