View Compilation Error

0_0_36430968_4004.cpp: In function 'int main()':
0_0_36430968_4004.cpp:46:25: error: too many arguments to function 'void ksm(long long int)'
         ll mul=ksm(2,k/2);
                         ^
0_0_36430968_4004.cpp:35:13: note: declared here
 inline void ksm(ll b){
             ^
0_0_36430968_4004.cpp:46:25: error: void value not ignored as it ought to be
         ll mul=ksm(2,k/2);
                         ^