Pagini recente » Cod sursa (job #321382) | Cod sursa (job #642667) | Cod sursa (job #51279) | Cod sursa (job #1040646) | Cod sursa (job #2058162)
#include<cstdio>
#include<vector>
#include<queue>
#define inf 0x3f3f3f3f
using namespace std;
int d[50105],ciclu[50105];
int n,m,x,y,ok,cost;
queue <int>q;
vector <int> g[50100], c[50105];
int dijkstra(int x0){
for(int i=1;i<=n;++i)
d[i]=inf;
d[x0]=0;
q.push(x0);
while(!q.empty()){
int x=q.front();
for(int i=0;i<g[x].size(); ++i)
if(d[g[x][i]] > d[x] + c[x][i]) {
///relaxare muchii
d[g[x][i]] = d[x] + c[x][i];
q.push(g[x][i]);
}
q.pop();
}
return 1;
}
int main()
{
freopen("dijkstra.in","r",stdin);
freopen("dijkstra.out","w",stdout);
scanf("%d%d",&n,&m);
for(int i=1;i<=m;i++){
scanf("%d%d%d",&x,&y,&cost);
g[x].push_back(y);
c[x].push_back(cost);
}
ok=dijkstra(1);
for(int i=2;i<=n;i++){
if(d[i]!=inf)printf("%d ",d[i]);
printf("0 ");
}
}