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Background

Description

鸡兔同笼，共有35个头，94只脚，求鸡和兔子各多少只？ 设鸡有x只，兔子有y只，由题意得方程组 x+y=35 2x+4y=94 联立解得x = 23, y = 12 试用程序实现上述过程，输入头与脚的数量，算出鸡和兔子的只数

Format

Input

Output

Samples

35
94

23 12

Limitation

1s, 1024KiB for each test case.