func_code_string: #include <bits/stdc++.h>   using namespace std;   long long n, l, r;   inline long long query(long long l, long long r) {     for (long long i = 62; i >= 1; i--) {       if ((1ll << i) - 1 >= l && (1ll << i) - 1 <= r) return (1ll << i) - 1;     }     for (long long i = 62; i >= 0; i--)       if (((1ll << i) & l) > 0 && ((1ll << i) & r) > 0)         return (1ll << i) + query(l - (1ll << i), r - (1ll << i));   }   int main() {     scanf( %lld , &n);     while (n--) {       scanf( %lld%lld , &l, &r);       if (l > r) {         long long t = l;         l = r;         r = t;       }       if (l == r) {         printf( %lld n , l);         continue;       }       printf( %lld n , query(l, r));     }     return 0;   }   