View Compilation Error

0_0_17656231_4255.cpp:43:16: error: stray '#' in program
     return now;#include<cstdio>
                ^
0_0_17656231_4255.cpp: In function 'll pow(ll, ll, int)':
0_0_17656231_4255.cpp:43:17: error: 'include' was not declared in this scope
     return now;#include<cstdio>
                 ^
0_0_17656231_4255.cpp:43:25: error: 'cstdio' was not declared in this scope
     return now;#include<cstdio>
                         ^
0_0_17656231_4255.cpp:47:1: error: expected primary-expression before 'using'
 using namespace std;
 ^
0_0_17656231_4255.cpp:52:1: error: 'namespace' definition is not allowed here
 namespace Eulr {
 ^
0_0_17656231_4255.cpp:78:24: error: a function-definition is not allowed here before '{' token
 ll pow(ll a,ll b,int p){
                        ^
0_0_17656231_4255.cpp:142:1: error: expected '}' at end of input
 }
 ^