Pagini recente » Cod sursa (job #1744247) | Monitorul de evaluare | Cod sursa (job #2552418)
#include <iostream>
#include <fstream>
#define infinit 1000000000
using namespace std;
ifstream fin("hamilton.in");
ofstream fout("hamilton.out");
int i,j,n,m,cost,nodant,minn,a[20][20],d[262150][20],k;
int main()
{
fin>>n>>m;
int minn=infinit;
for(i=1;i<=m;i++)
{
fin>>i>>j>>cost;
a[i][j]=cost;
}
for(i=3;i<(1<<n);i=i+2)
{
for(j=0;j<n;j++)
{
d[i][j]=infinit;
if(((1<<j)&i)!=0)
{
nodant=i-(1<<j);
for(k=0;k<n;k++)
{
if((nodant&(1<<k))!=0&&a[k][j]!=0)
{
d[i][j]=min(d[i][j],d[nodant][k]+a[k][j]);
}
}
}
}
}
/* for(i=1;i<=(1<<n)-1;i++)
{
for(j=0;j<n;j++)
{
cout<<d[i][j]<<" ";
}
cout<<endl;
}
cout<<endl<<endl;
for(i=0;i<n;i++)
{
for(j=0;j<n;j++)
{
cout<<a[i][j]<<" ";
}
cout<<endl;
}
/*4 7
0 1 5
0 2 2
1 2 6
1 3 4
2 1 5
2 3 7
3 0 3*/
nodant=(1<<n)-1;
for(i=0;i<n;i++)
{
if(a[i][0]!=0)
{
if(minn>d[nodant][i]+a[i][0])
{
minn=d[nodant][i]+a[i][0];
}
}
}
if(minn!=infinit)
{
fout<<minn;
}
else
{
fout<<"Nu exista solutie";
}
return 0;
}