View Compilation Error

0_0_30230653_28248.cpp:1:4: error: stray '#' in program
  1 #include<bits/stdc++.h>
    ^
0_0_30230653_28248.cpp:1:2: error: expected unqualified-id before numeric constant
  1 #include<bits/stdc++.h>
  ^
0_0_30230653_28248.cpp:3:2: error: expected unqualified-id before numeric constant
  3 const int maxn = 1000000;
  ^
0_0_30230653_28248.cpp:4:2: error: expected unqualified-id before numeric constant
  4 int dp[maxn],pre[maxn],num[maxn];
  ^
0_0_30230653_28248.cpp:5:2: error: expected unqualified-id before numeric constant
  5 int main()
  ^