原题

#include<bits/stdc++.h>
#define m 0x7fff
using namespace std;
int k;

int main()
{
	int i=0;
	double cnt=0;
	int max = -m;
	int min = m;
	while(cin >> k);
	{
		cout<< 'k' << k<<endl; ;
		cnt += k;
		if(k<=min) min = k;
		if(k>=max) max = k;
		i++;
	}
	double pj = cnt/i;
	printf("%d %d %.3lf",min,max,pj);
	return 0;
}

结果：