using System;
using System.IO;
using System.Linq;
using System.Text;
using System.Text.RegularExpressions;
using System.Collections.Generic;
using System.Diagnostics;
//using System.Numerics;
using Enu = System.Linq.Enumerable;

public class Program
{
    static readonly int INF = (int)1e9;

    public void Solve()
    {
        int V = Reader.Int(), E = Reader.Int(), S = Reader.Int();
        var es = new List<Edge>();
        var dist = new int[V];

        for (int a = 0; a < V; a++)
            dist[a] = INF;
        dist[S] = 0;
        for (int i = 0; i < E; i++)
            es.Add(new Edge(Reader.Int(), Reader.Int(), Reader.Int()));
        for (int t = 0; t <= V; t++)
            foreach (var e in es)
                if (dist[e.a] < INF && CheckMin(ref dist[e.b], dist[e.a] + e.cost) && t == V)
                {
                    Console.WriteLine("NEGATIVE CYCLE");
                    return;
                }
        for (int a = 0; a < V; a++)
            if (dist[a] == INF) Console.WriteLine("INF");
            else Console.WriteLine(dist[a]);

        Console.ReadLine();
    }

    bool CheckMin(ref int a, int b) { if (b < a) { a = b; return true; } return false; }

    struct Edge : IComparable<Edge>
    {
        public int a, b;
        public int cost;
        public Edge(int a, int b, int c)
        {
            this.a = a; this.b = b; this.cost = c;
        }
        public int CompareTo(Edge other)
        {
            return cost.CompareTo(other.cost);
        }
        public override string ToString()
        {
            return a + " - " + b + " cost:" + cost;
        }
    }

}


class Entry { static void Main() { new Program().Solve(); } }
class Reader
{
    static TextReader reader = Console.In;
    static readonly char[] separator = { ' ' };
    static readonly StringSplitOptions op = StringSplitOptions.RemoveEmptyEntries;
    static string[] A = new string[0];
    static int i;
    static void Init() { A = new string[0]; }
    public static void Set(TextReader r) { reader = r; Init(); }
    public static void Set(string file) { reader = new StreamReader(file); Init(); }
    public static bool HasNext() { return CheckNext(); }
    public static string String() { return Next(); }
    public static int Int() { return int.Parse(Next()); }
    public static long Long() { return long.Parse(Next()); }
    public static double Double() { return double.Parse(Next()); }
    public static int[] IntLine() { return Array.ConvertAll(Split(Line()), int.Parse); }
    public static int[] IntArray(int N) { return Range(N, Int); }
    public static int[][] IntTable(int H) { return Range(H, IntLine); }
    public static string[] StringArray(int N) { return Range(N, Next); }
    public static string[][] StringTable(int N) { return Range(N, () => Split(Line())); }
    public static string Line() { return reader.ReadLine().Trim(); }
    static T[] Range<T>(int N, Func<T> f) { return Enu.Range(0, N).Select(i => f()).ToArray(); }
    static string[] Split(string s) { return s.Split(separator, op); }
    static string Next() { CheckNext(); return A[i++]; }
    static bool CheckNext()
    {
        if (i < A.Length) return true;
        string line = reader.ReadLine();
        if (line == null) return false;
        if (line == "") return CheckNext();
        A = Split(line);
        i = 0;
        return true;
    }
}

Measured memory_bytes: 9580