#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[1001]; char s2[1001]; int a1=0; cin >>s1>>s2>>a1; strcat(s1,s2); cout<<s1[a1-1]; return 0; }