v86s3e3

#include<iostream>
using namespace std;

int numar(int n,int c1,int c2)
 {
  int p=1,rez=0,c;
  while(n!=0)
   {
    c=n%10;
     if(c==c1)
      rez=rez+p*c2;
       else
       rez=rez+p*c;
      p=p*10;
      n=n/10;
    }
   return rez;
   }
  int main()
   {
    int n,c1,c2;
    cin>>n>>c1>>c2;
    cout<<numar(n,c1,c2);
   }