Pagini recente » Cod sursa (job #845897) | Cod sursa (job #2389413) | Cod sursa (job #2279752) | Cod sursa (job #2105876) | Cod sursa (job #650092)
Cod sursa(job #650092)
#include<fstream>
#include<iostream>
#include<vector>
using namespace std;
#define maxn 250001
#define pb push_back
vector <int> vec[maxn];
vector <int> cost[maxn];
vector <int> q;
int d[50001];
int n,m;
int main(){
ifstream fi("bellmanford.in");
ofstream g("bellmanford.out");
fi>>n>>m;
int i,j;
for(i=1;i<=m;i++){
int a,b,c;
fi>>a>>b>>c;
vec[a].pb(b);
cost[a].pb(c);
if(i<=m)
d[i]=100000;
}
d[1]=0;
q.pb(1);
int f=0,l=0;
while(f<=l){
int nod=q[f];
for(i=0;i<vec[nod].size();i++){
if(d[vec[nod][i]]>d[nod]+cost[nod][i]){
d[vec[nod][i]]=d[nod]+cost[nod][i];
q.pb(vec[nod][i]);
l++;
}
}
if(f>n){
g<<"Ciclu negativ!";
return 0;
}
f++;
}
for(i=2;i<=n;i++){
g<<d[i]<<" ";
}
return 0;
}