#include <bits/stdc++.h>
using namespace std;
using ll = long long;
using ld = long double;
using uint = unsigned int;
using ull = unsigned long long;
using pii = pair<int, int>;
int f[50], s[50], p[50];
ld dp[51][5000];
int main() {
  cin.tie(nullptr);
  cout.tie(nullptr);
  ios_base::sync_with_stdio(false);
  int n, r;
  cin >> n >> r;
  for (int i = 0; i < n; i++) cin >> f[i] >> s[i] >> p[i];
  ld l = 0, h = 1e9;
  int rep = 80;
  while (rep--) {
    ld m = (l + h) / 2;
    for (int i = n - 1; i >= 0; i--) {
      fill(dp[i + 1] + min(5000, r + 1), dp[i + 1] + 5000, m);
      for (int j = 0; j <= r; j++) {
        ld ff = (dp[i + 1][j + f[i]] + f[i]) * p[i];
        ld ss = (dp[i + 1][j + s[i]] + s[i]) * (100 - p[i]);
        dp[i][j] = min(m, (ff + ss) / 100);
      }
    }
    if (dp[0][0] < m) {
      h = m;
    } else {
      l = m;
    }
  }
  cout << fixed << setprecision(20) << l;
  return 0;
}
