func_code_string: #include <bits/stdc++.h>   using namespace std;   int main() {     int n;     scanf( %d , &n);     for (int z = 0; z < n; z++) {       long long a, b, c;       cin >> a >> b;       while ((c = a | a + 1) <= b) a = (a | a + 1);       cout << a << endl;     }     return 0;   }   