哪里写错了啊咋才40

#define _CRT_SECURE_NO_WARNINGS
#include <stdio.h>
#include<stdlib.h>
int main()
{
	int n, k; 
    scanf("%d %d",&n,&k);
	int count = n / k; 
	double avg1 = (k+count*k)/2;
	int sum=(n+1)*n/2-avg1*count;
	double avg2 = sum / (n - count);
	printf("%.1lf %.1lf", avg1, avg2);
	return 0;
}