#include <cstdio>
#include <iostream>
#include <cstring>
#include <cmath>
#include <algorithm>
using namespace std;
#define maxn 10000
#define eps 1e-8
const int INF = 100000;
int n, k;
double L[maxn];
bool judge(double x)
{
int cnt = 0;
for(int i=0; i<n; i++)
{
cnt += (int)(L[i]/x);
}
return cnt >= k;
}
void solve()
{
double L = 0, R = INF;
while((R - L) > eps)
{
double mid = (L + R)/2;
if(judge(mid)) L = mid;
else R = mid;
}
printf("%.2lf\n", floor(R*100)/100);
}
int main()
{
while(~scanf("%d%d", &n, &k))
{
for(int i=0; i<n; i++)
scanf("%lf", &L[i]);
solve();
}
return 0;
}
POJ 1064 Cable Master
最新推荐文章于 2019-04-21 15:45:46 发布