View Compilation Error

0_0_36908092_22037.cpp: In function 'bool check(ll)':
0_0_36908092_22037.cpp:10:2: error: '_int128' was not declared in this scope
  _int128 num = 1; ll t = ceil(log2(n));
  ^
0_0_36908092_22037.cpp:12:6: error: 'num' was not declared in this scope
   if(num*n > k) return false;
      ^
0_0_36908092_22037.cpp:13:3: error: 'num' was not declared in this scope
   num *= n;
   ^
0_0_36908092_22037.cpp:16:6: error: 'num' was not declared in this scope
   if(num*t > k) return false;
      ^
0_0_36908092_22037.cpp:17:3: error: 'num' was not declared in this scope
   num *= t;
   ^