ll@n,@l,@r,@a[n],z=1; sortA(n,a); rep(i,n-1){ ll j=1; while(j<n&&!(a[i]*a[j]>=l&&a[i]*a[j]<=r&&a[j-1]*a[j]>=l&&a[j-1]*a[j]<=r)){ ++j; } if(j<n){ ll k=j+1; while(k<n&&(a[i]*a[k]>=l&&a[i]*a[k]<=r&&a[k-1]*a[k]>=l&&a[k-1]*a[k]<=r)){ ++k; } z>?=k-j+1+(i<j-1||i>=k); } } wt(z);