# include<cstring> //字符串头文件 # include<iostream> using namespace std; int main(){ char a[200],b[200]; int a1,b1,n; cin>>a; cin>>b; cin>>n; a1=strlen(a); b1=strlen(b); for(int i=0;i<b1;i++){ a[a1+i]=b[i]; } cout<<a[n-1]; return 0; }