View Compilation Error

0_0_24465381_25877.cpp: In function 'int main()':
0_0_24465381_25877.cpp:32:21: error: expected initializer before 'ans'
         unsigned ll ans=1;
                     ^
0_0_24465381_25877.cpp:36:13: error: 'ans' was not declared in this scope
             ans*=(p[i]*q[i]%mod+p[i]-q[i]+mod)%mod*mi%mod;
             ^
0_0_24465381_25877.cpp:38:16: error: 'ans' was not declared in this scope
         cout<<(ans+mod)%mod<<endl;
                ^