#include<bits/stdc++.h>
namespace {
#pragma GCC diagnostic ignored "-Wunused-function"
#include<atcoder/all>
#pragma GCC diagnostic warning "-Wunused-function"
using namespace std;
using namespace atcoder;
#define rep(i,n) for(int i = 0; i < (int)(n); i++)
#define rrep(i,n) for(int i = (int)(n) - 1; i >= 0; i--)
#define all(x) begin(x), end(x)
#define rall(x) rbegin(x), rend(x)
template<class T> bool chmax(T& a, const T& b) { if (a < b) { a = b; return true; } else return false; }
template<class T> bool chmin(T& a, const T& b) { if (b < a) { a = b; return true; } else return false; }
using ll = long long;
using P = pair<int,int>;
using VI = vector<int>;
using VVI = vector<VI>;
using VL = vector<ll>;
using VVL = vector<VL>;

} int main() {
  ios::sync_with_stdio(false);
  cin.tie(0);
  int tt;
  cin >> tt;
  while (tt--) {
    ll n;
    string ss;
    cin >> n >> ss;
    int sz = ss.size();
    assert(ss[sz - 4] == '.');
    int s = 0;
    rep(i, sz) if (i != sz - 4) s = 10 * s + (ss[i] - '0');
    s *= 2;
    int L = s - 0, R = s + 1;
    ll ans = 0;
    for (int m = 1; m < 2000; m++) {
      if (m > n) break;
      ll mn = ((ll)L * m + 1999) / 2000;
      ll mx = ((ll)R * m + 1999) / 2000;
      ans += mn < mx;
    }
    if (n >= 2000) ans += n + 1 - 2000;
    cout << ans << '\n';
  }
}