HDU ACM 1316 Problem Descr iption Recall the definition of the Fibonacci numbers: f1 := 1 f2 := 2 fn := fn-1 + fn-2 (n >= 3) Given two numbers a and b, calculate how many Fibonacci numbers are in the range [a, b].

vs2015上测试没问题，把鼠标放在指定位置按F1获取窗口信息，输入窗口信息敲回车改变窗口标题-Vs2015 on the test no problem, the mouse on the specified location by F1 to obtain the window information, enter the window information to change the window title