View Compilation Error

0_0_13801330_22374.cpp:2:4: error: stray '#' in program
  2 #include<set>
    ^
0_0_13801330_22374.cpp:6:4: error: stray '#' in program
  6 #ifndef ONLINE_JUDGE
    ^
0_0_13801330_22374.cpp:8:4: error: stray '#' in program
  8 #endif
    ^
0_0_13801330_22374.cpp:2:2: error: expected unqualified-id before numeric constant
  2 #include<set>
  ^
0_0_13801330_22374.cpp:4:2: error: expected unqualified-id before numeric constant
  4 int main()
  ^