spisok = list(map(int, input(). split()))
number1 = 0
number2 = 1
for one in range(len(spisok) - 1):
for two in range(one + 1, len(spisok)):
if abs(spisok[one] - spisok[two]) < abs(spisok[number1] - spisok[number2]):
number1 = one
number2 = two
print(number1, number2)