View Compilation Error

0_0_22642224_7178.cpp:52:1: error: 'LL' does not name a type
 LL qpow(LL x,LL n)
 ^
0_0_22642224_7178.cpp: In function 'int main()':
0_0_22642224_7178.cpp:88:61: error: 'qpow' was not declared in this scope
                 F[i] = F[i] * qpow(j/i,num[j+i-1] - num[j-1]) % MOD;
                                                             ^