Pagini recente » Cod sursa (job #1607081) | Cod sursa (job #581883) | Cod sursa (job #324254) | Cod sursa (job #1367665) | Cod sursa (job #2980214)
#include <bits/stdc++.h>
using namespace std;
ifstream fin("dijkstra.in");
ofstream fout("dijkstra.out");
int d[1001],t[1001];
const int INF = 1e9;
bitset<1001> viz;
int n,m,a[1001][1001];
void citire()
{
int x,y,i,c;
fin>>n>>m;
for(i=1;i<=m;i+=1)
{
fin>>x>>y>>c;
a[x][y]=c;
}
}
void prelucrare()
{
int i,j;
for(i=1;i<=n;i+=1)
for(j=1;j<=n;j+=1)
if(i!=j and a[i][j]==0)
a[i][j]=INF;
}
void dijkstra(int v)
{
int mini,kk,j,k,i;
for(i=1;i<=n;i+=1)
{
d[i]=a[v][i];
if(d[i]<INF)
t[i]=v;
}
for(kk=1;kk<n;kk+=1)
{
mini=INF;
for(j=1;j<=n;j+=1)
if(d[j]<mini and !viz[j])
{
mini=d[j];
k=j;
}
viz[k]=1;
for(i=1;i<=n;i+=1)
if(!viz[i])
if(d[i]>d[k]+a[k][i])
d[i]=d[k]+a[k][i],t[i]=k;
}
for(i=2 ;i<=n;i+=1)
fout<<d[i]<<' ';
}
int main()
{
citire();
prelucrare();
dijkstra(1);
return 0;
}