#include<iostream> #include<cstring> using namespace std; int main() { char a[201]; cin >> a; int d; d=strlen(a); char b,c; cin>>b>>c; for(int i=0;i<=d;i++){ if(a[i]==b){ a[i]=c; } } for(int i=0;i<=d;i++){ cout<<a[i]; } }