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Cod sursa(job #796722)
#include<stdio.h>
#include<limits.h>
using namespace std;
#define inf 250000000
long long d[50001];
int n,m;
struct graf {
int x,y,z;
};
graf arc[250001];
int dist(int a, int b) {
int k=-1;
for(int i=1;i<=m;i++)
if(arc[i].x==a && arc[i].y==b) {
k=arc[i].z;
i=m+1;
}
return k;
}
void dijkstra(int x0) {
int i,min,k,ok=1,viz[50001],tata[50001],p;
for(i=1;i<=n;i++) {
p=dist(x0,i);
if(p==-1) d[i]=inf;
else d[i]=p;
tata[i]=x0;
viz[i]=0;
}
tata[x0]=0;
viz[x0]=1;
while(ok) {
min=inf;
for(i=1;i<=n;i++)
if(!viz[i] && min>d[i]) {
min=d[i];
k=i;
}
if(min!=inf) {
viz[k]=1;
for(i=1;i<=n;i++) {
p=dist(k,i);
if(p==-1) p=inf;
if(!viz[i] && d[i]>d[k]+p) {
d[i]=d[k]+p;
tata[i]=k;
}
}
}
else ok=0;
}
}
int main() {
freopen ("dijkstra.in", "r", stdin);
freopen ("dijkstra.out", "w", stdout);
int i,x0;
scanf ("%d %d", &n, &m);
x0=1;
for(i=1;i<=m;i++)
scanf("%d %d %d", &arc[i].x, &arc[i].y, &arc[i].z);
dijkstra(x0);
for(i=2;i<=n;i++)
if(d[i]!=inf) printf("%lld ", d[i]);
else printf("0");
return 0;
}