Language: Java

import java.io.*;
import java.util.*;

class s332475184 {
    static int[] counter;
    static List<List<Integer>> graph;

    public static void main(String[] args) {
        FastScanner fs = new FastScanner();
        int n = fs.nextInt();
        int q = fs.nextInt();
        graph = new ArrayList<>();
        for (int i = 0; i < n; i++) graph.add(new LinkedList<>());

        counter = new int[n];
        Integer a, b;
        for (int i = 0; i < n - 1; i++) {
            a = fs.nextInt() - 1;
            b = fs.nextInt() - 1;
            graph.get(a).add(b);
            graph.get(b).add(a);
        }
        for (int i = 0; i < q; i++) {
            counter[fs.nextInt() - 1] += fs.nextInt();
        }
        dfs(0, -1, 0);
        StringJoiner sj = new StringJoiner(" ");
        for (int i = 0; i < n; i++) {
            sj.add(String.valueOf(counter[i]));
        }
        System.out.println(sj.toString());
    }

    static void dfs(int v, int par, long val) {

        for (Integer i : graph.get(v)) {
            if (i != par) {
                dfs(i, v, val + counter[v]);
            }
        }
        counter[v] += val;
    }

    static class FastScanner {
        private final InputStream in = System.in;
        private final byte[] buffer = new byte[1024];
        private int ptr = 0;
        private int buflen = 0;

        private boolean hasNextByte() {
            if (ptr < buflen) {
                return true;
            } else {
                ptr = 0;
                try {
                    buflen = in.read(buffer);
                } catch (IOException e) {
                    e.printStackTrace();
                }
                if (buflen <= 0) {
                    return false;
                }
            }
            return true;
        }

        private int readByte() {
            if (hasNextByte()) return buffer[ptr++];
            else return -1;
        }

        private boolean isPrintableChar(int c) {
            return 33 <= c && c <= 126;
        }

        public boolean hasNext() {
            while (hasNextByte() && !isPrintableChar(buffer[ptr])) ptr++;
            return hasNextByte();
        }

        public String next() {
            if (!hasNext()) throw new NoSuchElementException();
            StringBuilder sb = new StringBuilder();
            int b = readByte();
            while (isPrintableChar(b)) {
                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 *= 10;
                    n += b - '0';
                } else if (b == -1 || !isPrintableChar(b)) {
                    return minus ? -n : n;
                } else {
                    throw new NumberFormatException();
                }
                b = readByte();
            }
        }

        public int nextInt() {
            long nl = nextLong();
            if (nl < Integer.MIN_VALUE || nl > Integer.MAX_VALUE) throw new NumberFormatException();
            return (int) nl;
        }

        public double nextDouble() {
            return Double.parseDouble(next());
        }
    }
}


Example test case(s):
input: 4 3
1 2
2 3
2 4
2 10
1 100
3 1

output: 100 110 111 110