View Compilation Error

0_0_27866577_274.cpp: In function 'void Initial()':
0_0_27866577_274.cpp:39:9: error: 'i' was not declared in this scope
     for(i=1; i<N; ++i)
         ^
0_0_27866577_274.cpp: In function 'int main()':
0_0_27866577_274.cpp:56:13: error: 'll' was not declared in this scope
             ll x;
             ^
0_0_27866577_274.cpp:58:27: error: 'x' was not declared in this scope
             scanf("%lld",&x);
                           ^
0_0_27866577_274.cpp:74:17: error: 'll' was not declared in this scope
                 ll val=(1<<(j-1));
                 ^
0_0_27866577_274.cpp:77:70: error: 'val' was not declared in this scope
                     ans[i]=(ans[i]+C[num[j]][k]*C[n-num[j]][i-k]%mod*val%mod)%mod;
                                                                      ^