View Compilation Error

0_0_22911961_14411.cpp:8:1: error: expected ',' or ';' before 'long'
 long long a[N+1]={0};
 ^
0_0_22911961_14411.cpp: In function 'int main()':
0_0_22911961_14411.cpp:17:4: error: 'a' was not declared in this scope
    a[j]=1;
    ^
0_0_22911961_14411.cpp:27:7: error: 'a' was not declared in this scope
    if(a[j]!=0)
       ^
0_0_22911961_14411.cpp:30:5: error: 'a' was not declared in this scope
     a[j]=0;
     ^
0_0_22911961_14411.cpp:42:7: error: 'a' was not declared in this scope
    if(a[j]!=0)
       ^