func_code_string: #include <bits/stdc++.h>   using namespace std;   int q, n;   long long k;   long long len[100004];   string s1 =  What are you doing while sending  ,          s2 =  ? Are you busy? Will you send  , s3 =  ? ,          f0 =               What are you doing at the end of the world? Are you busy? Will you                 save us? ;   int ge;   void pre() {     s1 +=    ;     s2 =     + s2 +    ;     s3 =     + s3;     len[0] = 75;     for (int i = 1; i <= 100000; i++) {       len[i] = len[i - 1] * 2 + 33 + 30 + 1 + 1 + 2 + 1;       if (len[i] > 1000000000000000000LL) {         ge = i;         return;       }     }   }   int dfs(int x) {     if (x <= ge && k > len[x]) return printf( . );     if (!x) return printf( %c , f0[k - 1]);     if (k <= 34) return printf( %c , s1[k - 1]), 0;     k -= 34;     if (x > ge || k <= len[x - 1]) return dfs(x - 1);     k -= len[x - 1];     if (k <= 32) return printf( %c , s2[k - 1]), 0;     k -= 32;     if (k <= len[x - 1]) return dfs(x - 1);     k -= len[x - 1];     return printf( %c , s3[k - 1]);   }   int main() {     scanf( %d , &q);     pre();     while (q--) {       scanf( %d%I64d , &n, &k);       dfs(n);     }     return 0;   }   