$\LARGE\texttt{70分代码:}$

#include<iostream>
#include<algorithm>
using namespace std;
const unsigned int N=1e5+3;
int n,m,x[N];
inline bool check(int d)
{
    int cow=1;
    int rgt=x[1]=d;
    for(int i=2;i<=n;++i)
    {
        if(x[i]<rgt)
        {
            continue;
        }
        ++cow;
        rgt=x[i]+d;
    }
    bool temp=(cow>=m);
    return temp;
}
int main()
{
    cin>>n>>m;
    for(int i=1;i<=n;++i)
    {
        cin>>x[i];
    }
    sort(x+1,x+n+1);
    int l=0,r=x[n]-x[1];
    while(l<=r)
    {
        int mid=l+r>>1;
        if(check(mid))
        {
            l=mid+1;
        }
        else
        {
            r=mid-1;
        }
    }
    cout<<r;
    return 0;
}

$\texttt{70分 Record}$

$\red{\texttt{WA}}~\texttt{on}~$#1 #2 #10