View Compilation Error

0_0_33893344_22514.cpp:24:1: error: 'll' does not name a type
 ll mypow(ll a,ll b)
 ^
0_0_33893344_22514.cpp: In function 'void init()':
0_0_33893344_22514.cpp:42:40: error: 'mypow' was not declared in this scope
     inv[maxn-1]=mypow(fac[maxn-1],mod-2);
                                        ^