import java.io.BufferedReader
import java.io.InputStream
import java.io.InputStreamReader
import java.io.PrintWriter
import java.util.*

fun PrintWriter.solve(sc: FastScanner) {
    val n = sc.nextInt()
    val m = sc.nextInt()
    val k = sc.nextInt()
    val mod = 1000000007L
    val code = mutableListOf<Triple<Int, Int, Int>>()
    val next = Array(300) { mutableListOf<Pair<Int, Int>>() }
    for (i in 0 until m) {
        val p = sc.nextInt() - 1
        val q = sc.nextInt() - 1
        val c = sc.nextInt()
        code.add(Triple(p, q, c))
        next[p].add(q to c)
    }
    var dp = Array(300) { LongArray(k + 1) { 0 } }
    for (i in 0 until 300) {
        dp[i][0] = 1
    }
    for (i in 1 until n) {
        val newdp = Array(300) { LongArray(k + 1) { 0 } }
        for (j in 0 until 300) {
            for (s in 0..k) {
                for ((x, c) in next[j]) {
                    if (s + c > k) continue
                    newdp[x][s + c] += dp[j][s]
                    newdp[x][s + c] %= mod
                }
            }
        }
        dp = newdp
    }
    var sum = 0L
    for (i in 0 until 300) {
        sum += dp[i][k]
    }
    println(sum % mod)
}

fun main() {
    val writer = PrintWriter(System.out, false)
    writer.solve(FastScanner(System.`in`))
    writer.flush()
}

class FastScanner(s: InputStream) {
    private var st = StringTokenizer("")
    private val br = BufferedReader(InputStreamReader(s))

    fun next(): String {
        while (!st.hasMoreTokens()) st = StringTokenizer(br.readLine())

        return st.nextToken()
    }

    fun nextInt() = next().toInt()
    fun nextLong() = next().toLong()
    fun nextLine() = br.readLine()
    fun nextDouble() = next().toDouble()
    fun ready() = br.ready()
}