#include <iostream>
using namespace std;
void ultima(int n) {
cout << endl << n % 10;
}
void prima(int n) {
while (n>9) {
n = n / 10;
}
cout << endl << n;
}
int main() {
int a,b,c,d;
cout << "Introduceti a,b,c,d :";
cin >> a>>b>>c>>d;
prima(a);
prima(b);
prima(c);
prima(d);
ultima(a);
ultima(b);
ultima(c);
ultima(d);
}
