pb3

#include <iostream>

using namespace std;

int main()
{

     unsigned c=0,x=0,c1,p=1,nr=0,uc;
  cout<<"x=";cin>>x;
  cout<<"c=";cin>>c;
  cout<<"c1=";cin>>c1;
  while (x!=0) {
    uc=x%10;
    if (uc==c)
        nr=c1*p+nr;
    else
        nr=uc*p+nr;
    p*=10;
    x/=10;
  }
  cout<<nr;
return 0;}