Pagini recente » Cod sursa (job #1738519) | Cod sursa (job #2428027) | Cod sursa (job #1503075) | Cod sursa (job #2059563) | Cod sursa (job #2983524)
#include <fstream>
#include <vector>
#include <queue>
using namespace std;
ifstream cin("bellmanford.in");
ofstream cout("bellmanford.out");
const int MAX = 5e4+1;
const int maximposibil = 1e9 + 1;
int dp[MAX] , n , m , x , y , c , intrari[MAX];
bool in[MAX];
struct edge{
int y , c;
};
vector <edge> g[MAX];
queue <int> q;
int main()
{
cin >> n >> m;
while(m--){
cin >> x >> y >> c;
g[x].push_back({y,c});
}
for(int i = 2 ; i <= n ; i++){
dp[i] = maximposibil;
}
q.push(1);
in[1] = 1;
while(!q.empty()){
x = q.front();
q.pop();
in[x] = 0;
for(auto it : g[x]){
if(dp[it.y] > dp[x] + it.c){
dp[it.y] = dp[x] + it.c;
if(!in[it.y]){
in[it.y] = 1;
intrari[it.y]++;
if(intrari[it.y] > n){
cout << "Ciclu negativ!";
return 0;
}
q.push(it.y);
}
}
}
}
for(int i = 2 ; i <= n ; i++){
cout << dp[i] << ' ';
}
return 0;
}