fn main() {
    const MOD: usize = 1_000_000_007;

    let (n, m, k): (usize, usize, usize) = {
        let mut buf = String::new();
        std::io::stdin().read_line(&mut buf).unwrap();
        let mut iter = buf.split_whitespace();
        (
            iter.next().unwrap().parse().unwrap(),
            iter.next().unwrap().parse().unwrap(),
            iter.next().unwrap().parse().unwrap(),
        )
    };

    let (mut p, mut q, mut c) = (vec![], vec![], vec![]);
    for _ in 0..m {
        let mut buf = String::new();
        std::io::stdin().read_line(&mut buf).unwrap();
        let mut iter = buf.split_whitespace();
        p.push(iter.next().unwrap().parse::<usize>().unwrap() - 1);
        q.push(iter.next().unwrap().parse::<usize>().unwrap() - 1);
        c.push(iter.next().unwrap().parse::<usize>().unwrap());
    }

    let mut dp = vec![vec![vec![0; k + 1]; n]; n];
    for i in 0..n {
        dp[0][i][0] = 1;
    }
    for i in 0..(n - 1) {
        for j in 0..m {
            for l in 0..=k {
                if l + c[j] > k { continue; }
                dp[i + 1][q[j]][l + c[j]] = {
                    (dp[i + 1][q[j]][l + c[j]] + dp[i][p[j]][l]) % MOD
                };
            }
        }
    }

    let mut ans = 0;
    for i in 0..n {
        ans = (ans + dp[n - 1][i][k]) % MOD;
    }
    println!("{}", ans);
}