View Compilation Error

0_0_36785137_14750.cpp: In function 'int main()':
0_0_36785137_14750.cpp:72:36: error: no match for 'operator[]' (operand types are 'std::ostream {aka std::basic_ostream<char>}' and 'int')
               ans=ans*__gcd(i, cout[i])%MOD;
                                    ^
0_0_36785137_14750.cpp:72:39: error: '__gcd' was not declared in this scope
               ans=ans*__gcd(i, cout[i])%MOD;
                                       ^