selling t-shirts.txt

以前ACM在哈工程HRBEU做的一些简单题目

#include <stdio.h>
#include <math.h>

long num,n;
double a,b,c,d,answer,x,t;

int main()
{
scanf("%ld",&num);
while(num--)
{
	 scanf("%ld",&n);
     scanf("%lf",&a);
     scanf("%lf",&b);
     scanf("%lf",&c);
     scanf("%lf",&d);
     x=d/2+a*n/2/b; 
     x=x/a; 
     x=floor(x)+1; t=x; 
     x=x*a-0.01;
     answer=(x-d)*(n-(t-1)*b)-c;
    printf("%.2f\n",answer);
}

return 0;
}