import java.util.ArrayList
import java.util.Random

private fun readLn() = readLine()!! // string line
private fun readInt() = readLn().toInt() // single int
private fun readLong() = readLn().toLong() // single int
private fun readStrings() = readLn().split(" ") // list of strings
private fun readInts() = readStrings().map { it.toInt() } // list of ints



fun dfs(u: Int, p: Int, lvl: Int, adj: Array<ArrayList<Int>>, V1: ArrayList<Int>, V2: ArrayList<Int>) {
    if (lvl % 2 == 0) {
        V1.add(u)
    } else {
        V2.add(u)
    }
    for (v in adj[u]) {
        if (v == p) continue
        dfs(v, u, lvl + 1, adj, V1, V2)
    }
}

fun main(args: Array<String>) {

    val N = readInt()
    val adj = Array(N) { ArrayList<Int>() }
    for ((u, v) in (0 until N - 1).map { readInts().map { it - 1 } }) {
        adj[u].add(v)
        adj[v].add(u)
    }
    val V1 = ArrayList<Int>()
    val V2 = ArrayList<Int>()
    val r = Random()
    dfs(r.nextInt(N), -1, 0, adj, V1, V2)

    val (I0, I1, I2) = listOf(ArrayList<Int>(),ArrayList<Int>(),ArrayList<Int>())
    for (i in 1..N) {
        if (i % 3 == 1) I1.add(i)
        if (i % 3 == 2) I2.add(i)
        if (i % 3 == 0) I0.add(i)
    }

    val ans = Array(N) { 0 }
    if (Math.min(V1.size, V2.size) < I2.size) {
        val n = if (V1.size < V2.size) V1 else V2
        while (n.size > 0) {
            val t = I0
            ans[n.last()] = t.last()
            t.removeAt(t.size - 1)
            n.removeAt(n.size - 1)
        }
        val m = if (V1.size < V2.size) V2 else V1
        while (m.size > 0) {
            val t = if (I0.isNotEmpty()) I0 else if (I1.isNotEmpty()) I1 else I2
            ans[m.last()] = t.last()
            t.removeAt(t.size - 1)
            m.removeAt(m.size - 1)
        }
    } else {
        val n = if (V1.size < V2.size) V1 else V2
        while (n.size > 0) {
            val t = if (I2.isNotEmpty()) I2 else I0
            ans[n.last()] = t.last()
            t.removeAt(t.size - 1)
            n.removeAt(n.size - 1)
        }
        val m = if (V1.size < V2.size) V2 else V1
        while (m.size > 0) {
            val t = if (I0.isNotEmpty()) I0 else if (I1.isNotEmpty()) I1 else I2
            ans[m.last()] = t.last()
            t.removeAt(t.size - 1)
            m.removeAt(m.size - 1)
        }
    }
    println(ans.joinToString(" "))



}

/*
1 1 5 -> 3
1 5 1 -> 2
5 1 1 -> 1
 */
