1.
include <iostream>
using namespace std;
int main(){
int n;
int k;
int nr;
int c;
int p = 1;
cin >> n;
cin >> k;
if (k == 0){
nr = -1;
else{
nr = 0;
}
while (n != 0 || k != 0){
c = n%2;
n = n/10;
if (c != 10){
nr = nr + (n%10)*p;
p = p*10
else{
k = k - 1;
}
}
cout << nr;
return 0;
}
2.
int main(){
int n, x, y;
int ok = 0;
cin << x;
cin << y;
cin << n;
for (int i = 1; i > 1; i++){
if ((i%x == 0 && i%y != 0) || (i%x != 0 && i%y == 0)){
cout << i, ' ';
ok = 1;
}
}
if (ok == 0){
cout << '0';
}
return 0;
}
