View Compilation Error

0_0_27421206_21957.cpp:10:23: error: 'Maxlen' was not declared in this scope
 int phi[Maxval],prime[Maxlen],sz;
                       ^
0_0_27421206_21957.cpp: In function 'int main()':
0_0_27421206_21957.cpp:93:27: error: 'prime' was not declared in this scope
   if (!phi[i]) phi[i]=i-1,prime[sz++]=i;
                           ^
0_0_27421206_21957.cpp:94:28: error: 'prime' was not declared in this scope
   for (int j=0;j<sz && 1LL*prime[j]*i<Maxval;++j)
                            ^