题解

#include<bits/stdc++.h>
using namespace std;

int main()
{
    double a[24];
    double b[8],maxn=-301,minn=301;
    for (int i=0;i<24;i++)
    {
        cin >> a[i];
        maxn=max(maxn,a[i]);
        minn=min(minn,a[i]);
        if (i%3==2)
        {
            b[i/3]=maxn-minn;
            maxn=-301;
            minn=301;
        }
    }
    sort(b,b+8);
    cout << b[7]-b[0];
    return 0;
}