/in/foo.cc:4:4: error: stray '#' in program
  4 #include<iostream>
    ^
/in/foo.cc:5:4: error: stray '#' in program
  5 #include<algorithm>
    ^
/in/foo.cc:6:4: error: stray '#' in program
  6 #include<string>
    ^
/in/foo.cc:7:4: error: stray '#' in program
  7 #include<iomanip>
    ^
/in/foo.cc:8:4: error: stray '#' in program
  8 #include<memory.h>
    ^
/in/foo.cc:9:4: error: stray '#' in program
  9 #include<time.h>
    ^
/in/foo.cc:10:4: error: stray '#' in program
 10 #include<stdio.h>
    ^
/in/foo.cc:11:4: error: stray '#' in program
 11 #include<stdlib.h>
    ^
/in/foo.cc:12:4: error: stray '#' in program
 12 #include<string.h>
    ^
/in/foo.cc:13:4: error: stray '#' in program
 13 #include<stdbool.h>
    ^
/in/foo.cc:14:4: error: stray '#' in program
 14 #include<math.h>
    ^
/in/foo.cc:15:4: error: stray '#' in program
 15 #define min(a,b) ((a)<(b)?(a):(b))
    ^
/in/foo.cc:16:4: error: stray '#' in program
 16 #define max(a,b) ((a)>(b)?(a):(b))
    ^
/in/foo.cc:17:4: error: stray '#' in program
 17 #define abs(a) ((a)>0?(a):(-(a)))
    ^
/in/foo.cc:18:4: error: stray '#' in program
 18 #define lowbit(a) (a&(-a))
    ^
/in/foo.cc:19:4: error: stray '#' in program
 19 #define sqr(a) (a)*(a)
    ^
/in/foo.cc:20:4: error: stray '#' in program
 20 #define swap(a,b) (a)^=(b),(b)^=(a),(a)^=(b)
    ^
/in/foo.cc:21:4: error: stray '#' in program
 21 #define eps 1e-8
    ^
/in/foo.cc:22:4: error: stray '#' in program
 22 #define MAX 0x7f7f7f7f
    ^
/in/foo.cc:23:4: error: stray '#' in program
 23 #define INF 20000
    ^
/in/foo.cc:24:4: error: stray '#' in program
 24 #define PI 3.1415926535897
    ^
/in/foo.cc:25:4: error: stray '#' in program
 25 #define N 54
    ^
/in/foo.cc:31:8: error: stray '#' in program
 31     #ifndef ONLINE_JUDGE
        ^
/in/foo.cc:34:8: error: stray '#' in program
 34     #endif
        ^
/in/foo.cc:1:2: error: expected unqualified-id before numeric constant
  1 //
  ^
/in/foo.cc:27:1: error: expected unqualified-id before numeric constant
 27 int n,m,lll,ans,cas;
 ^~
/in/foo.cc:28:1: error: expected unqualified-id before numeric constant
 28 char c[N][N];
 ^~
/in/foo.cc:29:1: error: expected unqualified-id before numeric constant
 29 int main()
 ^~