View Compilation Error

0_0_38777770_20189.cpp: In function 'i64 bsgs(i64, i64, i64)':
0_0_38777770_20189.cpp:215:18: error: 'sqrt' was not declared in this scope
  215 |     i64 m = ceil(sqrt(p));
      |                  ^~~~
0_0_38777770_20189.cpp:215:13: error: 'ceil' was not declared in this scope
  215 |     i64 m = ceil(sqrt(p));
      |             ^~~~
0_0_38777770_20189.cpp: In function 'void solve()':
0_0_38777770_20189.cpp:239:18: error: 'sqrt' is not a member of 'std'; did you mean 'sort'?
  239 |     int Q = std::sqrt(P + 1) + 1;
      |                  ^~~~
      |                  sort