View Compilation Error

0_0_18027232_13179.cpp:1:2: error: invalid preprocessing directive #includeusing
 #includeusing namespace std;int main(){    int n,a[110],b[110],i,j;    while(scanf("%d",&n)==1)    {        for(i=0;i<n;i++) scanf("%d",a+i);        for(i=0;i<n;i++) scanf("%d",b+i);    ...        
  ^