#include<iostream> #include<cstring> using namespace std; int main() { char a[1000]={},b[1000]={}; int lena,lenb,n; cin>>a; cin>>b; cin>>n; lena = strlen(a); lenb = strlen(b); for(int i=lena;i<lenb+lena;i++) { a[i]=b[i-lenb]; } cout<<a[n-1]; }