View Compilation Error

0_0_26430337_21728.cpp: In function 'll Max(ll, ll, ll, ll)':
0_0_26430337_21728.cpp:7:36: error: too few arguments to function 'll Max(ll, ll, ll, ll)'
     return Max(max(a, b), max(c, d));
                                    ^
0_0_26430337_21728.cpp:6:4: note: declared here
 ll Max(ll a, ll b, ll c, ll d) {
    ^