Cod sursa(job #1241484)
Utilizator | Data | 13 octombrie 2014 17:33:21 | |
---|---|---|---|
Problema | Algoritmul lui Dijkstra | Scor | 0 |
Compilator | cpp | Status | done |
Runda | Arhiva educationala | Marime | 1.75 kb |
#include <cstdio>
#include <cstring>
#define INF 10000000
using namespace std;
int a[1001][1001], d[1001], t[1001];
bool sel[1001];
void dijkstra (int n, int p)
{
int i, j, k=j, Min; memset(t,0,sizeof(t)); memset(sel,false,sizeof(sel));
for (i=1; i<=n; i++) d[i]=INF; d[p]=0;
for (i=1; i<=n; i++)
{
Min=INF;
for (j=1; j<=n; j++)
{
if (Min>d[j] && !sel[j])
{
Min=d[j]; k=j;
}
}
sel[k]=true;
for (j=1; j<=n; j++)
{
if (d[j]>d[k]+a[k][j] && !sel[j])
{
d[j]=d[k]+a[k][j];
t[j]=k;
}
}
}
}
int main()
{
int n, m, i, j, x, y, z;
freopen("dijkstra.in","r",stdin);
freopen("dijkstra.out","w",stdout);
scanf("%d%d",&n,&m);
for (i=1; i<=m; i++)
{
for (j=1; j<=n; j++)
{
if (i==j) a[i][j]=0;
else a[i][j]=INF;
}
}
for (i=1; i<=m; i++)
{
for (j=1; j<=n; j++)
{
scanf("%d%d%d",&x,&y,&z);
a[x][y]=z; a[y][x]=z;
}
}
dijkstra(n,1);
for (i=2; i<=n; i++) printf("%d ",d[i]);
fclose(stdin);
fclose(stdout);
return 0;
}