两人的年龄和问题-4 - Problem - CGOJ

Problem AE: 两人的年龄和问题-4

Problem AE: 两人的年龄和问题-4

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Time Limit : 1.000 sec Memory Limit : 128 MiB

Submit ProblemList Solved: 37 Submit Num: 69 Statistics ShowOff!

Description

爷爷今年a岁，孙子今年b岁，问多少年后爷爷的年龄是孙子的4倍？

Sample Input Copy

72 12

Sample Output Copy

Submit