View Compilation Error

0_0_30442179_10503.cpp:16:16: error: stray '#' in program
     return res;#include<cstdio>
                ^
0_0_30442179_10503.cpp: In function 'll quick_pow(ll, ll, ll)':
0_0_30442179_10503.cpp:16:17: error: 'include' was not declared in this scope
     return res;#include<cstdio>
                 ^
0_0_30442179_10503.cpp:16:25: error: 'cstdio' was not declared in this scope
     return res;#include<cstdio>
                         ^
0_0_30442179_10503.cpp:18:1: error: expected primary-expression before 'using'
 using namespace std;
 ^
0_0_30442179_10503.cpp:20:10: error: declaration of 'const ll mod' shadows a parameter
 const ll mod = 1e9 + 7;
          ^
0_0_30442179_10503.cpp:23:33: error: a function-definition is not allowed here before '{' token
 ll quick_pow(ll a, ll b, ll mod){
                                 ^
0_0_30442179_10503.cpp:82:1: error: expected '}' at end of input
 }
 ^