#include<iostream>
#include<cstdio>
#include<cstring>
#include<cmath>
#define eps 1e-6
using namespace std;
int n;
double f[21],a[21][21];
double sqr(double x){return x*x;}
void ini()
{
scanf("%d",&n);
for(int i=1;i<=n;i++)scanf("%lf",&f[i]);
for(int i=1;i<=n;i++)
for(int j=1;j<=n;j++)
{
double t;
scanf("%lf",&t);
a[i][j]=2*(t-f[j]);
a[i][n+1]+=sqr(t)-sqr(f[j]);
}
}
......
阅读全文