Problem:
Single Source Shortest Path (Negative Edges)

Input

An edge-weighted graph G (V, E) and the source r.

|V| |E| r
s0 t0 d0
s1 t1 d1
:
s|E|-1 t|E|-1 d|E|-1

|V| is the number of vertices and |E| is the number of edges in G. The graph vertices are named with the numbers 0, 1,..., |V|-1 respectively. r is the source of the graph.

si and ti represent source and target vertices of i-th edge (directed) and di represents the cost of the i-th edge.

Output

If the graph contains a negative cycle (a cycle whose sum of edge costs is a negative value) which is reachable from the source r, print

NEGATIVE CYCLE

in a line.

Otherwise, print

c0
c1
:
c|V|-1

The output consists of |V| lines. Print the cost of the shortest path from the source r to each vertex 0, 1, ... |V|-1 in order. If there is no path from the source to a vertex, print "INF".

Constraints

1 ≤ |V| ≤ 1000

0 ≤ |E| ≤ 2000

-10000 ≤ di ≤ 10000

There are no parallel edges

There are no self-loops

Sample Input 1

4 5 0
0 1 2
0 2 3
1 2 -5
1 3 1
2 3 2

Sample Output 1

0
2
-3
-1

Sample Input 2

4 6 0
0 1 2
0 2 3
1 2 -5
1 3 1
2 3 2
3 1 0

Sample Output 2

NEGATIVE CYCLE

Sample Input 3

4 5 1
0 1 2
0 2 3
1 2 -5
1 3 1
2 3 2

Sample Output 3

INF
0
-5
-3

Solution in JAVA (judge verdict: Accepted)

import java.util.*;
import java.io.*;
import java.math.*;
public class Main implements Runnable {
	static boolean DEBUG;
	public static void main(String[] args) {
		DEBUG = args.length > 0 && args[0].equals("-DEBUG");
		new Thread(null, new Main(), "", 1 << 31).start();
	}

	public void run() {
		Solver solver = new Solver();
		solver.solve();
		solver.exit();
	}

	static class FastScanner {
		private final InputStream in = System.in;
		private final byte[] buffer = new byte[1024];
		private int pointer = 0;
		private int buflen = 0;
		private boolean hasNextByte() {
			if(pointer < buflen) return true;
			else {
				pointer = 0;
				try {
					buflen = in.read(buffer);
				}catch (IOException e) {
					e.printStackTrace();
				}
				return buflen > 0;
			}
		}
		private int readByte() { if(hasNextByte()) return buffer[pointer ++]; else return -1; }
		private boolean isPrintableChar(int c) { return isPrintableChar(c, false); }
		private boolean isPrintableChar(int c, boolean includingSpace) { return (includingSpace ? 32 : 33) <= c && c <= 126; }
		private void skipUnprintable() { skipUnprintable(false); }
		private void skipUnprintable(boolean includingSpace) { while(hasNextByte() && !isPrintableChar(buffer[pointer], includingSpace)) pointer++; }
		private boolean hasNext() { return hasNext(false); }
		private boolean hasNext(boolean includingSpace) { skipUnprintable(includingSpace); return hasNextByte(); }
		private StringBuilder sb = new StringBuilder();
		public String next() { return next(false); }
		public String next(boolean includingSpace) {
			if(!hasNext(includingSpace)) throw new NoSuchElementException();
			sb.setLength(0);
			int b = readByte();
			while(isPrintableChar(b, includingSpace)) {
				sb.appendCodePoint(b);
				b = readByte();
			}
			return sb.toString();
		}
		public long nextLong() {
			if(!hasNext()) throw new NoSuchElementException();
			long n = 0;
			boolean minus = false;
			int b = readByte();
			if(b == '-') {
				minus = true;
				b = readByte();
			}
			if(b < '0' || '9' < b) throw new NumberFormatException();
			while(true) {
				if('0' <= b && b <= '9') n = n * 10 + b - '0';
				else if(b == -1 || !isPrintableChar(b)) return minus ? -n : n;
				else throw new NumberFormatException();
				b = readByte();
			}
		}
	}

	static class Solver {
		FastScanner sc = new FastScanner();
		public Solver() { }

		String ns() { return ns(false); }
		String ns(boolean includingSpace) { return sc.next(includingSpace); }
		String[] ns(int n) { return ns(n, false); }
		String[] ns(int n, boolean includingSpace) {
			String a[] = new String[n];
			for(int i = 0; i < n; i ++) a[i] = ns(includingSpace);
			return a;
		}
		String[][] ns(int n, int m) { return ns(n, m, false); }
		String[][] ns(int n, int m, boolean includingSpace) {
			String a[][] = new String[n][m];
			for(int i = 0; i < n; i ++) a[i] = ns(m, includingSpace);
			return a;
		}
		char nc() { return ns().charAt(0); }
		char[] nc(int n) {
			String str = ns();
			if(n < 0) n = str.length();
			char a[] = new char[n];
			for(int i = 0; i < n; i ++) a[i] = str.charAt(i);
			return a;
		}
		char[][] nc(int n, int m) {
			char a[][] = new char[n][m];
			for(int i = 0; i < n; i ++) a[i] = nc(m);
			return a;
		}
		boolean[] nb(int n, char t) {
			char c[] = nc(-1);
			if(n < 0) n = c.length;
			boolean a[] = new boolean[n];
			for(int i = 0; i < n; i ++) a[i] = c[i] == t;
			return a;
		}
		boolean[][] nb(int n, int m, char t) {
			boolean a[][] = new boolean[n][m];
			for(int i = 0; i < n; i ++) a[i] = nb(m, t);
			return a;
		}
		int ni() { return Math.toIntExact(sc.nextLong()); }
		int[] ni(int n) {
			int a[] = new int[n];
			for(int i = 0; i < n; i ++) a[i] = ni();
			return a;
		}
		int[][] ni(int n, int m) {
			int a[][] = new int[n][m];
			for(int i = 0; i < n; i ++) a[i] = ni(m);
			return a;
		}
		long nl() { return sc.nextLong(); }
		long[] nl(int n) {
			long a[] = new long[n];
			for(int i = 0; i < n; i ++) a[i] = nl();
			return a;
		}
		long[][] nl(int n, int m) {
			long a[][] = new long[n][m];
			for(int i = 0; i < n; i ++) a[i] = nl(m);
			return a;
		}
		double nd() { return Double.parseDouble(sc.next()); }
		double[] nd(int n) {
			double a[] = new double[n];
			for(int i = 0; i < n; i ++) a[i] = nd();
			return a;
		}
		double[][] nd(int n, int m) {
			double a[][] = new double[n][m];
			for(int i = 0; i < n; i ++) a[i] = nd(m);
			return a;
		}


		String booleanToString(boolean b) { return b ? "#" : "."; }

		PrintWriter out = new PrintWriter(System.out);
		PrintWriter err = new PrintWriter(System.err);
		StringBuilder sb4prtln = new StringBuilder();
		void prt() { out.print(""); }
		<T> void prt(T a) { out.print(a); }
		void prtln() { out.println(""); }
		<T> void prtln(T a) { out.println(a); }
		void prtln(int... a) {
			sb4prtln.setLength(0);
			for(int element : a) sb4prtln.append(element+" ");
			prtln(sb4prtln.toString().trim());
		}
		void prtln(long... a) {
			sb4prtln.setLength(0);
			for(long element : a) sb4prtln.append(element+" ");
			prtln(sb4prtln.toString().trim());
		}
		void prtln(double... a) {
			sb4prtln.setLength(0);
			for(double element : a) sb4prtln.append(element+" ");
			prtln(sb4prtln.toString().trim());
		}
		void prtln(String... a) {
			sb4prtln.setLength(0);
			for(String element : a) sb4prtln.append(element+" ");
			prtln(sb4prtln.toString().trim());
		}
		void prtln(char... a) {
			sb4prtln.setLength(0);
			for(char element : a) sb4prtln.append(element);
			prtln(sb4prtln.toString());
		}
		void prtln(boolean... a) {
			sb4prtln.setLength(0);
			for(boolean element : a) sb4prtln.append(booleanToString(element));
			prtln(sb4prtln.toString());
		}
		void prtln(int[][] a) { for(int[] element : a) prtln(element); }
		void prtln(long[][] a) { for(long[] element : a) prtln(element); }
		void prtln(double[][] a) { for(double[] element : a) prtln(element); }
		void prtln(String[][] a) { for(String[] element : a) prtln(element); }
		void prtln(char[][] a) { for(char[] element : a) prtln(element); }
		void prtln(boolean[][] a) { for(boolean[] element : a) prtln(element); }

		String errconvert(int a) { return isINF(a) ? "_" : String.valueOf(a); }
		String errconvert(long a) { return isINF(a) ? "_" : String.valueOf(a); }
		void errprt(int a) { if(DEBUG) err.print(errconvert(a)); }
		void errprt(long a) { if(DEBUG) err.print(errconvert(a)); }
		void errprt() { if(DEBUG) err.print(""); }
		<T> void errprt(T a) { if(DEBUG) err.print(a); }
		void errprt(boolean a) { if(DEBUG) errprt(booleanToString(a)); }
		void errprtln() { if(DEBUG) err.println(""); }
		void errprtln(int a) { if(DEBUG) err.println(errconvert(a)); }
		void errprtln(long a) { if(DEBUG) err.println(errconvert(a)); }
		<T> void errprtln(T a) { if(DEBUG) err.println(a); }
		void errprtln(boolean a) { if(DEBUG) errprtln(booleanToString(a)); }
		void errprtln(int... a) {
			if(DEBUG) {
				sb4prtln.setLength(0);
				for(int element : a) sb4prtln.append(errconvert(element)+" ");
				errprtln(sb4prtln.toString().trim());
			}
		}
		void errprtln(long... a) {
			if(DEBUG) {
				sb4prtln.setLength(0);
				for(long element : a) sb4prtln.append(errconvert(element)+" ");
				errprtln(sb4prtln.toString().trim());
			}
		}
		void errprtln(double... a) {
			if(DEBUG) {
				sb4prtln.setLength(0);
				for(double element : a) sb4prtln.append(element+" ");
				errprtln(sb4prtln.toString().trim());
			}
		}
		void errprtln(String... a) {
			if(DEBUG) {
				sb4prtln.setLength(0);
				for(String element : a) sb4prtln.append(element+" ");
				errprtln(sb4prtln.toString().trim());
			}
		}
		void errprtln(char... a) {
			if(DEBUG) {
				sb4prtln.setLength(0);
				for(char element : a) sb4prtln.append(element);
				errprtln(sb4prtln.toString());
			}
		}
		void errprtln(boolean... a) {
			if(DEBUG) {
				sb4prtln.setLength(0);
				for(boolean element : a) sb4prtln.append(booleanToString(element));
				errprtln(sb4prtln.toString());
			}
		}
		void errprtln(Object[] a) { if(DEBUG) for(Object element : a) errprtln(element); }
		void errprtln(int[][] a) { if(DEBUG) for(int[] element : a) errprtln(element); }
		void errprtln(long[][] a) { if(DEBUG) for(long[] element : a) errprtln(element); }
		void errprtln(double[][] a) { if(DEBUG) for(double[] element : a) errprtln(element); }
		void errprtln(String[][] a) { if(DEBUG) for(String[] element : a) errprtln(element); }
		void errprtln(char[][] a) { if(DEBUG) for(char[] element : a) errprtln(element); }
		void errprtln(boolean[][] a) { if(DEBUG) for(boolean[] element : a) errprtln(element); }
		void errprtln(Object[][] a) { if(DEBUG) for(Object element : a) { errprtln(element); errprtln(); } }

		void reply(boolean b) { prtln(b ? "Yes" : "No"); }
		void REPLY(boolean b) { prtln(b ? "YES" : "NO"); }

		void flush() { out.flush(); if(DEBUG) err.flush(); }
		void assertion(boolean b) { if(!b) throw new AssertionError(); }

		void exit() { flush(); System.exit(0); }
		<T> void exit(T a) { prtln(a); exit(); }
		void exit(int... a) { prtln(a); exit(); }
		void exit(long... a) { prtln(a); exit(); }
		void exit(double... a) { prtln(a); exit(); }
		void exit(String... a) { prtln(a); exit(); }
		void exit(char... a) { prtln(a); exit(); }
		void exit(boolean... a) { prtln(a); exit(); }
		void exit(int[][] a) { prtln(a); exit(); }
		void exit(long[][] a) { prtln(a); exit(); }
		void exit(double[][] a) { prtln(a); exit(); }
		void exit(String[][] a) { prtln(a); exit(); }
		void exit(char[][] a) { prtln(a); exit(); }
		void exit(boolean[][] a) { prtln(a); exit(); }


		long INF = (long)1e18 + 7;
		boolean isPlusINF(long a) { return a > INF / 10; }
		boolean isMinusINF(long a) { return isPlusINF(- a); }
		boolean isINF(long a) { return isPlusINF(a) || isMinusINF(a); }
		int I_INF = (int)1e9 + 7;
		boolean isPlusINF(int a) { return a > I_INF / 10; }
		boolean isMinusINF(int a) { return isPlusINF(- a); }
		boolean isINF(int a) { return isPlusINF(a) || isMinusINF(a); }


		int min(int a, int b) { return Math.min(a, b); }
		long min(long a, long b) { return Math.min(a, b); }
		double min(double a, double b) { return Math.min(a, b); }
		<T extends Comparable<T>> T min(T a, T b) { return a.compareTo(b) <= 0 ? a : b; }
		int min(int... x) {
			int min = x[0];
			for(int val : x) min = min(min, val);
			return min;
		}
		long min(long... x) {
			long min = x[0];
			for(long val : x) min = min(min, val);
			return min;
		}
		double min(double... x) {
			double min = x[0];
			for(double val : x) min = min(min, val);
			return min;
		}
		int max(int a, int b) { return Math.max(a, b); }
		long max(long a, long b) { return Math.max(a, b); }
		double max(double a, double b) { return Math.max(a, b); }
		<T extends Comparable<T>> T max(T a, T b) { return a.compareTo(b) >= 0 ? a : b; }
		int max(int... x) {
			int max = x[0];
			for(int val : x) max = max(max, val);
			return max;
		}
		long max(long... x) {
			long max = x[0];
			for(long val : x) max = max(max, val);
			return max;
		}
		double max(double... x) {
			double max = x[0];
			for(double val : x) max = max(max, val);
			return max;
		}
		long sum(int... a) {
			long sum = 0;
			for(int element : a) sum += element;
			return sum;
		}
		long sum(long... a) {
			long sum = 0;
			for(long element : a) sum += element;
			return sum;
		}
		double sum(double... a) {
			double sum = 0;
			for(double element : a) sum += element;
			return sum;
		}
		long sum(boolean... a) {
			long sum = 0;
			for(boolean element : a) sum += element ? 1 : 0;
			return sum;
		}
		long[] sums(int[] a) {
			long sum[] = new long[a.length + 1];
			sum[0] = 0;
			for(int i = 0; i < a.length; i ++) sum[i + 1] = sum[i] + a[i];
			return sum;
		}
		long[] sums(long[] a) {
			long sum[] = new long[a.length + 1];
			sum[0] = 0;
			for(int i = 0; i < a.length; i ++) sum[i + 1] = sum[i] + a[i];
			return sum;
		}
		double[] sums(double[] a) {
			double sum[] = new double[a.length + 1];
			sum[0] = 0;
			for(int i = 0; i < a.length; i ++) sum[i + 1] = sum[i] + a[i];
			return sum;
		}
		long[] sums(boolean[] a) {
			long sum[] = new long[a.length + 1];
			sum[0] = 0;
			for(int i = 0; i < a.length; i ++) sum[i + 1] = sum[i] + (a[i] ? 1 : 0);
			return sum;
		}
		long[][] sums(int[][] a) {
			long sum[][] = new long[a.length + 1][a[0].length + 1];
			fill(sum, 0);
			for(int i = 0; i < a.length; i ++) {
				for(int j = 0; j < a[i].length; j ++) {
					sum[i + 1][j + 1] = sum[i + 1][j] + sum[i][j + 1] - sum[i][j] + a[i][j];
				}
			}
			return sum;
		}
		long[][] sums(long[][] a) {
			long sum[][] = new long[a.length + 1][a[0].length + 1];
			fill(sum, 0);
			for(int i = 0; i < a.length; i ++) {
				for(int j = 0; j < a[i].length; j ++) {
					sum[i + 1][j + 1] = sum[i + 1][j] + sum[i][j + 1] - sum[i][j] + a[i][j];
				}
			}
			return sum;
		}
		double[][] sums(double[][] a) {
			double sum[][] = new double[a.length + 1][a[0].length + 1];
			fill(sum, 0);
			for(int i = 0; i < a.length; i ++) {
				for(int j = 0; j < a[i].length; j ++) {
					sum[i + 1][j + 1] = sum[i + 1][j] + sum[i][j + 1] - sum[i][j] + a[i][j];
				}
			}
			return sum;
		}
		long[][] sums(boolean[][] a) {
			long sum[][] = new long[a.length + 1][a[0].length + 1];
			fill(sum, 0);
			for(int i = 0; i < a.length; i ++) {
				for(int j = 0; j < a[i].length; j ++) {
					sum[i + 1][j + 1] = sum[i + 1][j] + sum[i][j + 1] - sum[i][j] + (a[i][j] ? 1 : 0);
				}
			}
			return sum;
		}
		int constrain(int x, int l, int r) { return min(max(x, min(l, r)), max(l, r)); }
		long constrain(long x, long l, long r) { return min(max(x, min(l, r)), max(l, r)); }
		double constrain(double x, double l, double r) { return min(max(x, min(l, r)), max(l, r)); }
		int abs(int x) { return x >= 0 ? x : - x; }
		long abs(long x) { return x >= 0 ? x : - x; }
		double abs(double x) { return x >= 0 ? x : - x; }
		int signum(int x) { return x > 0 ? 1 : x < 0 ? -1 : 0; }
		int signum(long x) { return x > 0 ? 1 : x < 0 ? -1 : 0; }
		int signum(double x) { return x > 0 ? 1 : x < 0 ? -1 : 0; }
		long round(double x) { return Math.round(x); }
		long floor(double x) { return (long)Math.floor(x); }
		int divfloor(int a, int b) { return signum(a) == signum(b) ? a / b : - divceil(abs(a), abs(b)); }
		long divfloor(long a, long b) { return signum(a) == signum(b) ? a / b : - divceil(abs(a), abs(b)); }
		long ceil(double x) { return (long)Math.ceil(x); }
		int divceil(int a, int b) { return a >= 0 && b > 0 ? (a + b - 1) / b
											: a < 0 && b < 0 ? divceil(abs(a), abs(b))
											: - divfloor(abs(a), abs(b)); }
		long divceil(long a, long b) { return a >= 0 && b > 0 ? (a + b - 1) / b
											: a < 0 && b < 0 ? divceil(abs(a), abs(b))
											: - divfloor(abs(a), abs(b)); }
		double sqrt(int x) { return Math.sqrt((double)x); }
		double sqrt(long x) { return Math.sqrt((double)x); }
		double sqrt(double x) { return Math.sqrt(x); }
		long fact(int n) {
			long ans = 1;
			for(int i = 1; i <= n; i ++) ans = Math.multiplyExact(ans, i);
			return ans;
		}
		double pow(double x, double y) { return Math.pow(x, y); }
		long pow(long x, long y) {
			long ans = 1;
			for(; y > 0; y /= 2) {
				if(y % 2 != 0) ans = Math.multiplyExact(ans, x);
				x = Math.multiplyExact(x, x);
			}
			return ans;
		}
		int gcd(int a, int b) {
			while(true) {
				if(b == 0) return a;
				int tmp = a;
				a = b;
				b = tmp % b;
			}
		}
		long gcd(long a, long b) {
			while(true) {
				if(b == 0) return a;
				long tmp = a;
				a = b;
				b = tmp % b;
			}
		}
		long lcm(long a, long b) { return a / gcd(a, b) * b; }
		int gcd(int... a) {
			int gcd = 0;
			for(int i = 0; i < a.length; i ++) gcd = gcd(gcd, a[i]);
			return gcd;
		}
		long gcd(long... a) {
			long gcd = 0;
			for(int i = 0; i < a.length; i ++) gcd = gcd(gcd, a[i]);
			return gcd;
		}
		double random() { return Math.random(); }
		int random(int max) { return (int)floor(random() * max); }
		long random(long max) { return floor(random() * max); }
		int random(int min, int max) { return random(max - min) + max; }
		long random(long min, long max) { return random(max - min) + max; }

		boolean isUpper(char a) { return a >= 'A' && a <= 'Z'; }
		boolean isLower(char a) { return a >= 'a' && a <= 'z'; }
		int upperToInt(char a) { return a - 'A'; }
		int lowerToInt(char a) { return a - 'a'; }
		int numToInt(char a) { return a - '0'; }
		int charToInt(char a) { return a >= 'a' ? lowerToInt(a) : a >= 'A' ? upperToInt(a) : numToInt(a); }
		char intToUpper(int a) { return (char)(a + 'A'); }
		char intToLower(int a) { return (char)(a + 'a'); }
		char intToNum(int a) { return (char)(a + '0'); }
		int[] charToInt(char[] a) {
			int array[] = new int[a.length];
			for(int i = 0; i < a.length; i ++) array[i] = charToInt(a[i]);
			return array;
		}

		long[] div(long a) {
			List<Long> divList = new ArrayList<Long>();
			for(long i = 1; i * i <= a; i ++) {
				if(a % i == 0) {
					divList.add(i);
					if(i * i != a) divList.add(a / i);
				}
			}
			long div[] = new long[divList.size()];
			for(int i = 0; i < divList.size(); i ++) div[i] = divList.get(i);
			Arrays.sort(div);
			return div;
		}

		long[][] factor(long a) {
			List<Long> factorList = new ArrayList<Long>();
			List<Long> degreeList = new ArrayList<Long>();
			for(long i = 2; i * i <= a; i ++) {
				if(a % i == 0) {
					long count = 0;
					while(a % i == 0) { a /= i; count ++; }
					factorList.add(i);
					degreeList.add(count);
				}
			}
			if(a > 1) { factorList.add(a); degreeList.add(1L); }
			long factor[][] = new long[factorList.size()][2];
			for(int i = 0; i < factorList.size(); i ++) {
				factor[i][0] = factorList.get(i);
				factor[i][1] = degreeList.get(i);
			}
			Arrays.sort(factor, (sort1, sort2) -> Long.compare(sort1[0], sort2[0]));
			return factor;
		}

		boolean isPrime(long x) {
			boolean ok = x > 1;
			for(long i = 2; i * i <= x; i ++) {
				ok &= x % i != 0;
				if(!ok) return ok;
			}
			return ok;
		}
		boolean[] prime(int num) {
			boolean prime[] = new boolean[num];
			fill(prime, true);
			if(num > 0) prime[0] = false;
			if(num > 1) prime[1] = false;
			for(int i = 2; i < num; i ++) if(prime[i]) for(int j = 2; i * j < num; j ++) prime[i * j] = false;
			return prime;
		}

		long[][] countElements(long[] a, boolean sort) {
			int len = a.length;
			long array[] = new long[len];
			for(int i = 0; i < len; i ++) array[i] = a[i];
			if(sort) Arrays.sort(array);
			List<Long> elem = new ArrayList<Long>();
			List<Long> cnt = new ArrayList<Long>();
			long tmp = 1;
			for(int i = 1; i <= len; i ++) {
				if(i == len || array[i] != array[i - 1]) {
					elem.add(array[i - 1]);
					cnt.add(tmp);
					tmp = 1;
				}else tmp ++;
			}
			long counts[][] = new long[elem.size()][2];
			for(int i = 0; i < elem.size(); i ++) {
				counts[i][0] = elem.get(i);
				counts[i][1] = cnt.get(i);
			}
			return counts;
		}
		long[][] countElements(String str, boolean sort) {
			int len = str.length();
			char array[] = str.toCharArray();
			if(sort) Arrays.sort(array);
			List<Long> elem = new ArrayList<Long>();
			List<Long> cnt = new ArrayList<Long>();
			long tmp = 1;
			for(int i = 1; i <= len; i ++) {
				if(i == len || array[i] != array[i - 1]) {
					elem.add((long)array[i - 1]);
					cnt.add(tmp);
					tmp = 1;
				}else tmp ++;
			}
			long counts[][] = new long[elem.size()][2];
			for(int i = 0; i < elem.size(); i ++) {
				counts[i][0] = elem.get(i);
				counts[i][1] = cnt.get(i);
			}
			return counts;
		}

		int[] baseConvert(long x, int n, int len) {
			int digit[] = new int[len];
			int i = 0;
			long tmp = x;
			while(tmp > 0 && i < len) { digit[i ++] = (int)(tmp % n); tmp /= n; }
			return digit;
		}
		int[] baseConvert(long x, int n) {
			long tmp = x;
			int len = 0;
			while(tmp > 0) { tmp /= n; len ++; }
			return baseConvert(x, n, len);
		}
		int[] baseConvert(int x, int n, int len) {
			int digit[] = new int[len];
			int i = 0;
			int tmp = x;
			while(tmp > 0 && i < len) { digit[i ++] = (int)(tmp % n); tmp /= n; }
			return digit;
		}
		int[] baseConvert(int x, int n) {
			int tmp = x;
			int len = 0;
			while(tmp > 0) { tmp /= n; len ++; }
			return baseConvert(x, n, len);
		}
		long[] baseConvert(long x, long n, int len) {
			long digit[] = new long[len];
			int i = 0;
			long tmp = x;
			while(tmp > 0 && i < len) { digit[i ++] = tmp % n; tmp /= n; }
			return digit;
		}
		long[] baseConvert(long x, long n) {
			long tmp = x;
			int len = 0;
			while(tmp > 0) { tmp /= n; len ++; }
			return baseConvert(x, n, len);
		}

		int numDigits(long a) { return Long.toString(a).length(); }
		long bitFlag(int a) { return 1L << (long)a; }
		boolean isFlagged(long x, int a) { return (x & bitFlag(a)) != 0; }

		long countString(String str, String a) { return (str.length() - str.replace(a, "").length()) / a.length(); }
		long countStringAll(String str, String a) { return str.length() - str.replaceAll(a, "").length(); }


		void fill(int[] array, int x) { Arrays.fill(array, x); }
		void fill(long[] array, long x) { Arrays.fill(array, x); }
		void fill(double[] array, double x) { Arrays.fill(array, x); }
		void fill(char[] array, char x) { Arrays.fill(array, x); }
		void fill(boolean[] array, boolean x) { Arrays.fill(array, x); }
		void fill(int[][] array, int x) { for(int[] a : array) fill(a, x); }
		void fill(long[][] array, long x) { for(long[] a : array) fill(a, x); }
		void fill(double[][] array, double x) { for(double[] a : array) fill(a, x); }
		void fill(char[][] array, char x) { for(char[] a : array) fill(a, x); }
		void fill(boolean[][] array, boolean x) { for(boolean[] a : array) fill(a, x); }
		void fill(int[][][] array, int x) { for(int[][] a : array) fill(a, x); }
		void fill(long[][][] array, long x) { for(long[][] a : array) fill(a, x); }
		void fill(double[][][] array, double x) { for(double[][] a : array) fill(a, x); }
		void fill(char[][][] array, char x) { for(char[][] a : array) fill(a, x); }
		void fill(boolean[][][] array, boolean x) { for(boolean[][] a : array) fill(a, x); }

		int[] resize(int[] array, int m, int x) {
			int resized[] = new int[m];
			for(int i = max(0, - x); i < array.length && i + x < m; i ++) resized[i + x] = array[i];
			return resized;
		}
		long[] resize(long[] array, int m, int x) {
			long resized[] = new long[m];
			for(int i = max(0, - x); i < array.length && i + x < m; i ++) resized[i + x] = array[i];
			return resized;
		}
		double[] resize(double[] array, int m, int x) {
			double resized[] = new double[m];
			for(int i = max(0, - x); i < array.length && i + x < m; i ++) resized[i + x] = array[i];
			return resized;
		}
		char[] resize(char[] array, int m, int x) {
			char resized[] = new char[m];
			for(int i = max(0, - x); i < array.length && i + x < m; i ++) resized[i + x] = array[i];
			return resized;
		}
		boolean[] resize(boolean[] array, int m, int x) {
			boolean resized[] = new boolean[m];
			for(int i = max(0, - x); i < array.length && i + x < m; i ++) resized[i + x] = array[i];
			return resized;
		}
		Object[] resize(Object[] array, int m, int x) {
			Object resized[] = new Object[m];
			for(int i = max(0, - x); i < array.length && i + x < m; i ++) resized[i + x] = array[i];
			return resized;
		}

		// graph
		class Graph {
			int numNode;
			int numEdge;
			boolean directed;
			Set<Edge> edges = new HashSet<>();
			Node nodes[];
			Node reversedNodes[];

			Graph(int numNode, int numEdge, boolean directed) {
				this.numNode = numNode;
				this.numEdge = numEdge;
				this.directed = directed;
				nodes = new Node[numNode];
				reversedNodes = new Node[numNode];
				for(int i = 0; i < numNode; i ++) {
					nodes[i] = new Node(i);
					reversedNodes[i] = new Node(i);
				}
			}

			void init(Set<Edge> edges) {
				this.edges = edges;
				for(Edge e : edges) add(e);
			}

			void add(Edge e) {
				edges.add(e);
				nodes[e.source].add(e.target, e.cost);
				if(directed) reversedNodes[e.target].add(e.source, e.cost);
				else nodes[e.target].add(e.source, e.cost);
			}

			void remove(Edge e) {
				edges.remove(e);
				nodes[e.source].remove(e.target, e.cost);
				if(directed) reversedNodes[e.target].remove(e.source, e.cost);
				else nodes[e.target].remove(e.source, e.cost);
			}

			void update(Edge e, long cost) {
				nodes[e.source].update(e.target, cost);
				if(directed) reversedNodes[e.target].update(e.source, cost);
				else nodes[e.target].update(e.source, cost);
				e.cost = cost;
			}
			void update(int source, int target, long cost) { update(new Edge(source, target, cost), cost); }

			void clearNodes() {
				for(Node n : nodes) n.clear();
				for(Node n : reversedNodes) n.clear();
			}
		}

		class Node extends HashSet<Edge> {
			int id;

			Node(int id) { this.id = id; }
			void add(int target, long cost) { add(new Edge(id, target, cost)); }
			void remove(int target, long cost) { remove(new Edge(id, target, cost)); }
			void update(int target, long cost) { remove(target, cost); add(target, cost); }
		}

		class Edge implements Comparable<Edge> {
			int source;
			int target;
			long cost;
			Edge(int source, int target, long cost) {
				this.source = source;
				this.target = target;
				this.cost = cost;
			}


			@Override
			public String toString() { return source+" - "+cost+" -> "+target; }
			@Override
			public int hashCode() { return Objects.hash(source, target); }
			@Override
			public boolean equals(Object obj) {
				if(this == obj) return true;
				if(obj == null) return false;
				if(this.getClass() != obj.getClass()) return false;
				Edge that = (Edge) obj;
				if(this.source != that.source) return false;
				if(this.target != that.target) return false;
				return true;
			}
			@Override
			public int compareTo(Edge that) {
				int c = Long.compare(this.cost, that.cost);
				if(c == 0) c = Integer.compare(this.source, that.source);
				if(c == 0) c = Integer.compare(this.target, that.target);
				return c;
			}
		}

		// Pair
		class Pair<T extends Comparable<? super T>, U extends Comparable<? super U>> implements Comparable<Pair<T, U>> {
			T a;
			U b;
			Pair() { }
			Pair(T a, U b) {
				this.a = a;
				this.b = b;
			}

			@Override
			public String toString() { return "("+a.toString()+", "+b.toString()+")"; }
			@Override
			public int hashCode() { return Objects.hash(a, b); }
			@Override
			public boolean equals(Object obj) {
				if(this == obj) return true;
				if(obj == null) return false;
				if(this.getClass() != obj.getClass()) return false;
				Pair that = (Pair) obj;
				if(this.a.getClass() != that.a.getClass()) return false;
				if(this.b.getClass() != that.b.getClass()) return false;
				if(!this.a.equals(that.a)) return false;
				if(!this.b.equals(that.b)) return false;
				return true;
			}
			@Override
			public int compareTo(Pair<T, U> that) {
				int c = (this.a).compareTo(that.a);
				if(c == 0) c = (this.b).compareTo(that.b);
				return c;
			}
		}
		class PairII extends Pair<Integer, Integer> { PairII(int a, int b) { super(a, b); } }
		class PairIL extends Pair<Integer, Long> { PairIL(int a, long b) { super(a, b); } }
		class PairID extends Pair<Integer, Double> { PairID(int a, double b) { super(a, b); } }
		class PairLI extends Pair<Long, Integer> { PairLI(long a, int b) { super(a, b); } }
		class PairLL extends Pair<Long, Long> { PairLL(long a, long b) { super(a, b); } }
		class PairLD extends Pair<Long, Double> { PairLD(long a, double b) { super(a, b); } }
		class PairDI extends Pair<Double, Integer> { PairDI(double a, int b) { super(a, b); } }
		class PairDL extends Pair<Double, Long> { PairDL(double a, long b) { super(a, b); } }
		class PairDD extends Pair<Double, Double> { PairDD(double a, double b) { super(a, b); } }


public void solve() {
	int numNode = ni();
	int numEdge = ni();
	int start = ni();
	Graph g = new Graph(numNode, numEdge, false);
	for(int i = 0; i < numEdge; i ++) {
		int a = ni();
		int b = ni();
		long c = nl();
		g.add(new Edge(a, b, c));
	}
	long dist[] = bellmanFord(numNode, g.edges, start);
	if(isMinusINF(min(dist))) exit("NEGATIVE CYCLE");
	for(long d : dist) {
		prtln(isINF(d) ? "INF" : d);
	}
}

int prev[];
long[] bellmanFord(int numNode, Set<Edge> edges, int start) { // O(VE)
	long dist[] = new long[numNode];
	fill(dist, INF);
	prev = new int[numNode];
	dist[start] = 0;

	for(int i = 0; i < numNode - 1; i ++) {
		for(Edge e : edges) {
			if(!isPlusINF(dist[e.source]) && dist[e.target] > dist[e.source] + e.cost) {
				dist[e.target] = dist[e.source] + e.cost;
				prev[e.target] = e.source;
			}
		}
	}

	for(int i = 0; i < numNode; i ++) {
		for(Edge e : edges) {
			if(!isPlusINF(dist[e.source]) && dist[e.target] > dist[e.source] + e.cost) {
				dist[e.target] = -INF;
			}
		}
	}

	return dist;
}

	}
}