View Compilation Error

0_0_15969241_20193.cpp:2:4: error: stray '#' in program
  1 #include <iostream>
    ^
0_0_15969241_20193.cpp:3:4: error: stray '#' in program
  2 #include <cstdio>
    ^
0_0_15969241_20193.cpp:4:4: error: stray '#' in program
  3 #include <cstdlib>
    ^
0_0_15969241_20193.cpp:5:4: error: stray '#' in program
  4 #include <cstring>
    ^
0_0_15969241_20193.cpp:16:4: error: stray '#' in program
 15 #ifndef ONLINE_JUDGE
    ^
0_0_15969241_20193.cpp:18:4: error: stray '#' in program
 17 #endif
    ^
0_0_15969241_20193.cpp:2:2: error: expected unqualified-id before numeric constant
  1 #include <iostream>
  ^
0_0_15969241_20193.cpp:7:2: error: expected unqualified-id before numeric constant
  6 int f[1000000];
  ^
0_0_15969241_20193.cpp:8:2: error: expected unqualified-id before numeric constant
  7 void pre(){
  ^