View Compilation Error

0_0_37699336_24388.cpp:1:2: error: stray '#' in program
 6#include<bits/stdc++.h>
  ^
0_0_37699336_24388.cpp:1:1: error: expected unqualified-id before numeric constant
 6#include<bits/stdc++.h>
 ^
0_0_37699336_24388.cpp: In function 'void init()':
0_0_37699336_24388.cpp:25:24: error: 'memset' was not declared in this scope
  memset(st,0,sizeof(st));
                        ^
0_0_37699336_24388.cpp: In function 'void solve()':
0_0_37699336_24388.cpp:42:2: error: 'cin' was not declared in this scope
  cin>>n;
  ^
0_0_37699336_24388.cpp:62:2: error: 'cout' was not declared in this scope
  cout<<inv((n-1),t,n)<<endl;
  ^
0_0_37699336_24388.cpp:62:24: error: 'endl' was not declared in this scope
  cout<<inv((n-1),t,n)<<endl;
                        ^
0_0_37699336_24388.cpp: In function 'int main()':
0_0_37699336_24388.cpp:67:2: error: 'cin' was not declared in this scope
  cin>>t;
  ^