View Compilation Error

0_0_39977125_7148.cpp: In function 'int Main()':
0_0_39977125_7148.cpp:20:19: error: too few arguments to function 'll ksm(ll, ll)'
   20 |         ll ans=ksm(((a-1ll)/2ll,a-2ll)+p)%p;
      |                ~~~^~~~~~~~~~~~~~~~~~~~~~~
0_0_39977125_7148.cpp:5:4: note: declared here
    5 | ll ksm(ll a,ll b){
      |    ^~~