[编程入门]自由下落的距离计算-题解(C语言代码)值得参考

为啥我这个错误50%
#include<stdio.h>
int main()
{
    double m,n,sun;
    int i=1;
    scanf("%lf %lf",&m,&n);
    sun=1000;
    while(i<n){
        sun+=m;
        m=m/2;
        i++;
    }
    m=m/2;
    printf("%0.2lf %0.2lf",m,sun);
    return 0;
}