#include <bits/stdc++.h> using namespace std; int main() { int n; cin>>n; char a[100010]; int x; for(int i = 0;i < n;i++) { cin>>a; cin>>x; int dian = 0; for(int j = 0;j < strlen(a);j++) { if(a[j] == '.') { dian = j; } } if(strlen(a) - dian < x) { cout<<0<<endl; } else { cout<<a[dian + x]<<endl; } } return 0; }