v89s3ex3

#include<iostream>
using namespace std;

void numar(long &n,int c1,int c2)
{
    int l=0,v[10],i,ok=1;
    while(n>0)
    {
        v[++l]=n%10;
        n=n/10;
    }
    for(i=l; i>=1; i--)
    {
        if(v[i]==c1)
        {
            v[i]=c2;
            c2=0;
            ok=0;
        }
       else {
              if(ok==0) v[i]=0;
            }
    }
    for(i=l; i>=1; i--)
        n=n*10+v[i];
}
int main()
{
    long n;
    int c1,c2;
    cin>>n>>c1>>c2;
    numar(n,c1,c2);
    cout<<n;
}