N = int(input())
line = input().split()
line = sorted(line)
df_old = 1000000
#print(line)
for i in range(N -1):
    df_new = int(line[i + 1]) - int(line[i])
    #print(abs(df_new), abs(df_old))
    if abs(df_new) < abs(df_old):
        df_old = df_new
        
print(abs(int(line[0]) - int(line[N - 1])))
print(df_old)