B"A little bear Limak plays a game. He has five cards. There is one number written on each card. Each number is a positive integer. Limak can discard (throw out) some cards. His goal is to minimize the sum of numbers written on remaining (not discarded) cards. He is allowed to at most once discard two or three cards with the same number. Of course, he won't discard cards if it's impossible to choose two or three cards with the same number. Given five numbers written on cards, cay you find the minimum sum of numbers on remaining cards? The only line of the input contains five integers t1, t2, t3, t4 and t5 (1 xe2 x80 x89 xe2 x89 xa4 xe2 x80 x89ti xe2 x80 x89 xe2 x89 xa4 xe2 x80 x89100) -- numbers written on cards. Print the minimum possible sum of numbers written on remaining cards. In the first sample, Limak has cards with numbers 7, 3, 7, 3 and 20. Limak can do one of the following. You are asked to minimize the sum so the answer is 26. In the second sample, it's impossible to find two or three cards with the same number. Hence, Limak does nothing and the sum is 7 xe2 x80 x89+ xe2 x80 x899 xe2 x80 x89+ xe2 x80 x891 xe2 x80 x89+ xe2 x80 x893 xe2 x80 x89+ xe2 x80 x898 xe2 x80 x89= xe2 x80 x8928. In the third sample, all cards have the same number. It's optimal to discard any three cards. The sum of two remaining numbers is 10 xe2 x80 x89+ xe2 x80 x8910 xe2 x80 x89= xe2 x80 x8920. "...