B"Nikolay has a lemons, b apples and c pears. He decided to cook a compote. According to the recipe the fruits should be in the ratio 1: xe2 x80 x892: xe2 x80 x894. It means that for each lemon in the compote should be exactly 2 apples and exactly 4 pears. You can't crumble up, break up or cut these fruits into pieces. These fruits -- lemons, apples and pears -- should be put in the compote as whole fruits. Your task is to determine the maximum total number of lemons, apples and pears from which Nikolay can cook the compote. It is possible that Nikolay can't use any fruits, in this case print 0. The first line contains the positive integer a (1 xe2 x80 x89 xe2 x89 xa4 xe2 x80 x89a xe2 x80 x89 xe2 x89 xa4 xe2 x80 x891000) -- the number of lemons Nikolay has. The second line contains the positive integer b (1 xe2 x80 x89 xe2 x89 xa4 xe2 x80 x89b xe2 x80 x89 xe2 x89 xa4 xe2 x80 x891000) -- the number of apples Nikolay has. The third line contains the positive integer c (1 xe2 x80 x89 xe2 x89 xa4 xe2 x80 x89c xe2 x80 x89 xe2 x89 xa4 xe2 x80 x891000) -- the number of pears Nikolay has. Print the maximum total number of lemons, apples and pears from which Nikolay can cook the compote. In the first example Nikolay can use 1 lemon, 2 apples and 4 pears, so the answer is 1 xe2 x80 x89+ xe2 x80 x892 xe2 x80 x89+ xe2 x80 x894 xe2 x80 x89= xe2 x80 x897. In the second example Nikolay can use 3 lemons, 6 apples and 12 pears, so the answer is 3 xe2 x80 x89+ xe2 x80 x896 xe2 x80 x89+ xe2 x80 x8912 xe2 x80 x89= xe2 x80 x8921. In the third example Nikolay don't have enough pears to cook any compote, so the answer is 0. "...