View Compilation Error

0_0_4682198_27145.cpp: In function `void phi(int)':
0_0_4682198_27145.cpp:38: error: `it' is not a member of `std::set<lld, std::less<lld>, std::allocator<lld> >'
0_0_4682198_27145.cpp:38: error: expected `;' at end of input
0_0_4682198_27145.cpp:38: error: expected `}' at end of input