#include <cassert>
#include <cmath>
#include <cstdint>
#include <cstdio>
#include <cstdlib>
#include <cstring>
#include <algorithm>
#include <bitset>
#include <complex>
#include <deque>
#include <functional>
#include <iostream>
#include <limits>
#include <map>
#include <numeric>
#include <queue>
#include <set>
#include <sstream>
#include <string>
#include <unordered_map>
#include <unordered_set>
#include <utility>
#include <vector>

using namespace std;

using Int = long long;

template <class T1, class T2> ostream &operator<<(ostream &os, const pair<T1, T2> &a) { return os << "(" << a.first << ", " << a.second << ")"; };
template <class T> ostream &operator<<(ostream &os, const vector<T> &as) { const int sz = as.size(); os << "["; for (int i = 0; i < sz; ++i) { if (i >= 256) { os << ", ..."; break; } if (i > 0) { os << ", "; } os << as[i]; } return os << "]"; }
template <class T> void pv(T a, T b) { for (T i = a; i != b; ++i) cerr << *i << " "; cerr << endl; }
template <class T> bool chmin(T &t, const T &f) { if (t > f) { t = f; return true; } return false; }
template <class T> bool chmax(T &t, const T &f) { if (t < f) { t = f; return true; } return false; }


using Double = double;
constexpr Double INF = 1e+20;

int N;
Double W;
vector<Double> T, S, P;

int main() {
  for (; ~scanf("%d", &N); ) {
    {
      int w;
      scanf("%d", &w);
      W = w;
    }
    T.resize(N);
    S.resize(N);
    P.resize(N);
    for (int i = 0; i < N; ++i) {
      int t, s, p;
      scanf("%d%d%d", &t, &s, &p);
      T[i] = t;
      S[i] = s;
      P[i] = p;
    }
    
    for (int i = 0; i < N; ++i) {
      S[i] /= W;
    }
#define W do_not_use_W
    
    vector<pair<Double, int>> adds(N + 1);
    for (int i = 0; i < N; ++i) {
      adds[i] = make_pair(T[i], i);
    }
    adds[N] = make_pair(INF, -1);
    sort(adds.begin(), adds.end());
    
    using Entry = pair<Double, int>;
    priority_queue<Entry, vector<Entry>, greater<Entry>> que;
    
    vector<Double> ans(N, -1.0);
    Double t = 0.0, p = 0.0;
    Double sent = 0.0;
    for (const auto &ti : adds) {
      const Double tt = ti.first;
      for (; !que.empty(); ) {
        const Double s = que.top().first;
        const int i = que.top().second;
        const Double tDone = t + (s - sent) * p;
        if (tDone <= tt) {
          ans[i] = tDone;
          if (p) sent += (tDone - t) / p;
          t = tDone;
          p -= P[i];
          que.pop();
        } else {
          break;
        }
      }
      {
        const int i = ti.second;
        if (~i) {
          if (p) sent += (tt - t) / p;
          t = tt;
          p += P[i];
          que.emplace((sent + S[i]) / P[i], i);
        }
      }
    }
    
    for (int i = 0; i < N; ++i) {
      printf("%.10f\n", ans[i]);
    }
  }
  return 0;
}