#include<iostream> // cin\cout\endl #include<cstdio> //scanf()\printf() #include<cstring> // strcpy()\strcat()\strcmp()\strlen()\memset() #include<cmath> //sqrt()\pow()\abs()\ceil()\floor()\max()\min() using namespace std; int main(){ char s1[1000],s2[1000],s3[2000]; cin>>s1>>s2; strcat(s1,s2); int n; cin>>n; cout<<s1[n-1]<<endl; return 0; }