编辑代码

# coding:utf-8
#JSRUN引擎2.0，支持多达30种语言在线运行，全仿真在线交互输入输出。
def dayUP (df):
    dayup=1.0
    for i in range(365):
        if i%7 in [0,6]:
            dayup=dayup*(1-0.01)
        else:
            dayup=dayup*(1+df)
    return dayup
dayfactor=0.01
while dayUP(dayfactor)<37.78:
    dayfactor=dayfactor+0.001
print("{:.3f}".format(dayfactor))