#include <bits/stdc++.h>  // {{{

// https://codeforces.com/blog/entry/96344

#pragma GCC optimize("O2,unroll-loops")
#pragma GCC target("avx2,bmi,bmi2,lzcnt,popcnt")

using namespace std;

template <typename T>
constexpr T MIN = std::numeric_limits<T>::min();

template <typename T>
constexpr T MAX = std::numeric_limits<T>::max();

template <typename T>
[[nodiscard]] static T sc(auto &&x) {
  return static_cast<T>(x);
}

template <typename T>
[[nodiscard]] static T sz(auto &&x) {
  return static_cast<T>(x.size());
}

template <typename... Args>
void pr(std::format_string<Args...> fmt, Args &&...args) {
  std::print(fmt, std::forward<Args>(args)...);
}

template <typename... Args>
void pr(std::format_string<Args...> fmt) {
  std::print(fmt);
}

template <typename... Args>
void prln(std::format_string<Args...> fmt, Args &&...args) {
  std::println(fmt, std::forward<Args>(args)...);
}

template <typename... Args>
void prln(std::format_string<Args...> fmt) {
  std::println(fmt);
}

void prln() {
  std::println();
}

void prln(auto const &t) {
  std::println("{}", t);
}

#ifdef LOCAL
#define dbgln(...) prln(...)
#define dbg(...) pr(...)
#endif

using ll = long long;
using ld = long double;
template <typename T>
using vec = std::vector<T>;
template <typename T, size_t N>
using arr = std::array<T, N>;

#define ff first
#define ss second
#define eb emplace_back
#define pb push_back
#define all(x) (x).begin(), (x).end()
#define rall(x) (x).rbegin(), (x).rend()
//  }}}

void solve() {
  int n, k, p;
  cin >> n >> k >> p;

  k = abs(k);

  int ans = k / p;
  k -= p * ans;
  if (k) {
    ++ans;
  }

  cout << (ans > n ? -1 : ans) << endl;
}

int main() {  // {{{
  cin.tie(nullptr)->sync_with_stdio(false);

  int t = 1;
  cin >> t;

  while (t--) {
    solve();
  }

  return 0;
}
// }}}