include [HTML_REMOVED]

using namespace std;

const int N=100010;
int n,m;
int a[N];

int main()
{
scanf(“%d%d”,&n,&m);

for(int i=0;i<n;i++) scanf("%d",&a[i]);

while(m--)
{
    int x;
    scanf("%d",&x);

    int l=0,r=n-1;
    while(l<r)
    {
        int mid=l+r>>1;
        if(a[mid]>=x) r=mid;
        else l=mid+1;
    }

    if(a[l]!=x) cout<<"-1 -1"<<endl;
    else
    {
        cout<<l<<' ';

        int l=0,r=n-1;
        while(l<r)
        {
            int mid=l+r+1>>1;
            if(a[mid]<=x) l=mid;
            else r=mid-1;
        }
        cout<<l<<endl;
    }
}
return 0;

}