Pagini recente » Cod sursa (job #2832931) | Cod sursa (job #2646944) | Cod sursa (job #1604483) | Cod sursa (job #2160887) | Cod sursa (job #2233442)
#pragma GCC optimize ("O3")
#include <bits/stdc++.h>
using namespace std;
#define x first
#define y second
#define dbg(x) cout << #x << '=' << x << '\n';
#define ll long long
#define pi pair<int,int>
#define pl pair<ll,ll>
#define pd pair<double,double>
#define ld long double
#define pld pair<ld,ld>
#define lg length()
#define sz size()
#define pb push_back
#define MAXN 100005
#define INF 1000000005
#define LINF 1000000000000000005
#define x1 xdddddddddddddddddd
#define y1 ydddddddddddddddddd
int n,m,d[50005],x,y,z,v[50005];
vector <pi> g[50005];
int32_t main(){
ios_base :: sync_with_stdio(0); cin.tie(); cout.tie();
ifstream cin("bellmanford.in");
ofstream cout("bellmanford.out");
cin >> n >> m;
for(int i=1;i<=m;i++){
cin >> x >> y >> z;
g[x].pb({y,z});
}
vector <int> q,p;
for(int i=1;i<=n;i++) d[i]=INF;
q.pb(1); d[1]=0;
for(int i=1;i<=n;i++){
for(int j : q){
if(v[j]==i) continue;
v[j]=i;
for(pi t : g[j]){
if(d[t.x]>d[j]+t.y) d[t.x]=d[j]+t.y,p.pb(t.x);
}
}
q=p;
p.clear();
}
for(int i=1;i<=n;i++){
for(pi j : g[i]){
if(d[j.x]>d[i]+j.y){
cout << "Ciclu negativ!";
return 0;
}
}
}
for(int i=2;i<=n;i++) cout << d[i] << ' ';
}