let N = readLine()!
let L = readLine()!.split(separator: " ").map{Int($0)!}
let S = Array(Set(L)).sorted()
var T = [Int]()
for i in 0...S.count - 2{
    T += [S[i + 1] - S[i]]
}
print(T.min()!,Int(S.last!) - Int(S.first!))