View Compilation Error

0_0_36144574_24853.cpp:5:1: error: 'int64' does not name a type
 int64 a[100000],i,j,k,l,m,n;
 ^
0_0_36144574_24853.cpp: In function 'void ac()':
0_0_36144574_24853.cpp:8:6: error: 'i' was not declared in this scope
  for(i=3;i<=4020;i++)
      ^
0_0_36144574_24853.cpp:9:2: error: 'a' was not declared in this scope
  a[i]=(a[i-2]-(i-1)*(i-1)*(i-1)+i*i*i)%2009;
  ^
0_0_36144574_24853.cpp: In function 'int main()':
0_0_36144574_24853.cpp:13:2: error: 'a' was not declared in this scope
  a[1]=1;
  ^
0_0_36144574_24853.cpp:16:20: error: 'n' was not declared in this scope
  while(scanf("%d",&n),n)
                    ^