Pagini recente » Cod sursa (job #2267632) | Cod sursa (job #2317564) | Cod sursa (job #515433) | Cod sursa (job #1162249) | Cod sursa (job #3208117)
#include <bits/stdc++.h>
using namespace std;
ifstream fin("gauss.in");
ofstream fout("gauss.out");
typedef long double ld;
const ld EPS=1e-15;
bool use[305];
ld v[305][305],sol[305];
int n,m;
int main()
{
ios_base::sync_with_stdio(false);
fin.tie(0);
fin>>n>>m;
if(m<n)
{
fout<<"Imposibil";
return 0;
}
for(int i=1;i<=n;i++)
for(int j=1;j<=m+1;j++)
fin>>v[i][j];
int i=1;
int j=1;
while(j<=m)
{
int ind=0;
for(int k=i;k<=n;k++)
if(abs(v[k][j]-0.0)>EPS)
{
ind=k;
break;
}
if(ind==0)
{
j++;
continue;
}
swap(v[i],v[ind]);
ld val=v[i][j];
for(int a=1;a<=m+1;a++)
v[i][a]/=val;
for(int z=i+1;z<=n;z++)
{
ld u=v[z][j];
for(int a=1;a<=m+1;a++)
v[z][a]-=v[i][a]*u;
}
i++;
j++;
}
for(int i=n;i>=1;i--)
{
int ind=0;
ld suma=0;
for(int j=1;j<=m;j++)
if(abs(v[i][j]-0.0)>EPS)
{
if(use[j])
{
suma+=v[i][j]*sol[j];
continue;
}
use[ind]=1;
ind=j;
}
if(ind==0)
{
if(abs(suma-v[i][m+1])>EPS)
{
fout<<"Imposibil";
return 0;
}
continue;
}
use[ind]=1;
sol[ind]=(-suma+v[i][m+1])/v[i][ind];
}
for(int i=1;i<=m;i++)
fout<<fixed<<setprecision(12)<<sol[i]<<' ';
return 0;
}