Pagini recente » Cod sursa (job #2452429) | Cod sursa (job #2129425) | Cod sursa (job #2938735) | Cod sursa (job #2355533) | Cod sursa (job #1114117)
#include <fstream>
#define nmax 50003
#define inf 0x3f3f3f3f
#include<queue>
#include<vector>
using namespace std;
ifstream f("dijkstra.in");
ofstream g("dijkstra.out");
int n,m,cost[nmax];
vector <int> v[nmax];
queue <int> q;
int solve()
{
q.push(1);
while(!q.empty())
{
int x=q.front();
for(int i=0;i<v[x].size();i+=2)
{
if(cost[v[x][i]]>cost[x]+v[x][i+1])
{
q.push(v[x][i]);
cost[v[x][i]]=cost[x]+v[x][i+1];
}
}
q.pop();
}
return 1;
}
int main()
{
f>>n>>m;
for(int i=1;i<=m;i++)
{
int a,b,c;
f>>a>>b>>c;
v[a].push_back(b);
v[a].push_back(c);
}
for(int i=2;i<=n;i++)
cost[i]=inf;
solve();
for(int i=2;i<=n;i++)
if(cost[i]==inf)
g<<"0 ";
else
g<<cost[i]<<" ";
return 0;
}