e/rfdgbhiuaregbhfiukdjridk5heiourhyfikuerht4iuhu7

guqingchen

[C++] 纯文本查看 复制代码

#include<bits/stdc++.h>
using namespace std;
int main(){
	double a,b=0;
	cin>>a;
	if(a<=20){
		b=a*1.68;
	}
	else{
		b=a*1.98;
	}
	printf("%0.2f",b);
	return 0;
}