题解 | #网购#
网购
https://www.nowcoder.com/practice/5d7dfd405e5f4e4fbfdff6862c46b751
#include<stdio.h>
int main()
{
double a,b,c,d;
scanf("%lf %lf %lf %lf",&a,&b,&c,&d);
if(b==c)
{
if(b==11){
if((a*0.7-d*50)<0) printf("0.00");
else printf("%.2lf",a*0.7-d*50);
}
if(b==12){
if((a*0.8-d*50)<0) printf("0.00");
else printf("%.2lf",a*0.8-d*50);
}
}
else printf("%.2lf",a);
return 0;
}
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