540

Run ID	Author	Problem	Lang	Verdict	Score	Time	Memory	Code Length	Submit Time
540	张弛	超市卖电池	C++	Wrong Answer	0	0 MS	256 KB	174	2019-09-20 22:34:45

#include<iostream> int main(){ double a; scanf("%lf",a); if(a<11){ printf("%.1lf",a*2); }else{ printf("%.1lf",a*2*0.9); } return 0; }