#include <iostream>
#include <vector>
#include <fstream>
#include <iomanip>
#include<cmath>
using namespace std;
double pow1(double x,int n)
{
    if (n == 1)
        return x;
    if (n == 0)
        return 1;
    double c = pow1(x, n / 2);
    c *= c;
    if (n % 2== 1)
        c *= x;
    return c;
}

vector<int> to, longTo;
vector<int> W;
int cnt = 1000;
vector<double> ans;

vector<double> longAns;
int main()
{
    ifstream cin("input.txt");
    ofstream cout("output.txt");
    int n, m, k;
    cin >> n >> m>> k;
    to.resize(n);
    double x;
    cin >> x;
    double longx = pow(x, cnt);
    longTo.resize(n);
    ans.resize(n);
    longAns.resize(n);
    W.resize(n, 1000000001);
    for (int i = 0; i < m; ++i)
	{
        int a,b, w;
        cin >> a >> b >> w;
        --a;
        --b;
        if (W[a] > w)
		{
            W[a] = w;
            to[a] = b;
		}
        if (W[b] > w)
		{
            W[b] = w;
            to[b] = a;
		}
	}
    for (int i = 0; i < n; ++i)
	{
        int a = i;
    //    cout << a + 1<< " " << to[a] + 1 << endl;
        for (int i1 = 0; i1 < cnt ; ++i1)
		{
            a = to[a];
		}
        longTo[i] = a;
	}
    for (int i = 0; i < k; ++i)
	{
        int v, t;
        double p;
        cin >> v >> p >> t;
        int v1 = v;
        --v;
        for (int i1 = 0; i1 < t / cnt; ++i1)
		{
            longAns[v] += p;
            p *= longx;
            v = longTo[v];
		}
        for (int i1 = 0; i1 < t % cnt; ++i1)
		{
            ans[v] += p;
           // cout << v << " " << " ";
            v = to[v];
            p *= x;
            if (p < 1e-15)
                break;
		}//cout << endl;
	}
    for (int i = 0; i < n; ++i)
	{
        int v= i;
        double p = longAns[i];
        //cout << p << endl;
        for (int i1 = 0; i1 < cnt; ++i1)
		{
            ans[v] += p;
            p *= x;
            v = to[v];
		}
        cout << fixed << setprecision(10) << ans[i] << endl;
	}
    return 0;
}