what is wrong with this??

include

using namespace std; int main() { int n,i,m,l,k,j,p,x,sum=0; cin>>n>>m>>p; int a[n];

for(i=1;i<=n;i++) { cin>>a[i]; } for(i=1;i<=m;i++) { cin>>j>>k>>l; if(j==1) { a[k]=a[k]^l;

 }
 if(j==2)
 {
    for(x=k;x<=l;x++)
    {

        if(x+p-2<n)
        {

            a[x]=a[x]^a[x+1];
            sum+=a[x];
        }
        else
            a[x]=0;
    }
 }

}

cout<

}