結果

問題 No.1203 お菓子ゲーム
ユーザー optopt
提出日時 2020-08-29 00:46:06
言語 C++17
(gcc 12.3.0 + boost 1.83.0)
結果
AC  
実行時間 466 ms / 2,000 ms
コード長 3,997 bytes
コンパイル時間 2,306 ms
コンパイル使用メモリ 204,736 KB
実行使用メモリ 47,812 KB
最終ジャッジ日時 2024-04-26 15:42:00
合計ジャッジ時間 27,298 ms
ジャッジサーバーID
(参考情報)
judge3 / judge4
このコードへのチャレンジ
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テストケース

テストケース表示
入力 結果 実行時間
実行使用メモリ
testcase_00 AC 424 ms
47,608 KB
testcase_01 AC 410 ms
47,676 KB
testcase_02 AC 411 ms
47,680 KB
testcase_03 AC 413 ms
47,676 KB
testcase_04 AC 414 ms
47,680 KB
testcase_05 AC 413 ms
47,684 KB
testcase_06 AC 427 ms
47,684 KB
testcase_07 AC 412 ms
47,676 KB
testcase_08 AC 428 ms
47,676 KB
testcase_09 AC 408 ms
47,684 KB
testcase_10 AC 437 ms
47,680 KB
testcase_11 AC 406 ms
47,680 KB
testcase_12 AC 449 ms
47,680 KB
testcase_13 AC 410 ms
47,676 KB
testcase_14 AC 438 ms
47,684 KB
testcase_15 AC 422 ms
47,812 KB
testcase_16 AC 435 ms
47,680 KB
testcase_17 AC 414 ms
47,680 KB
testcase_18 AC 428 ms
47,804 KB
testcase_19 AC 413 ms
47,808 KB
testcase_20 AC 436 ms
47,812 KB
testcase_21 AC 402 ms
47,808 KB
testcase_22 AC 436 ms
47,684 KB
testcase_23 AC 403 ms
47,680 KB
testcase_24 AC 442 ms
47,680 KB
testcase_25 AC 401 ms
47,808 KB
testcase_26 AC 423 ms
47,680 KB
testcase_27 AC 404 ms
47,684 KB
testcase_28 AC 444 ms
47,676 KB
testcase_29 AC 405 ms
47,680 KB
testcase_30 AC 449 ms
47,808 KB
testcase_31 AC 427 ms
47,680 KB
testcase_32 AC 443 ms
47,552 KB
testcase_33 AC 427 ms
47,808 KB
testcase_34 AC 456 ms
47,680 KB
testcase_35 AC 426 ms
47,676 KB
testcase_36 AC 426 ms
47,680 KB
testcase_37 AC 451 ms
47,680 KB
testcase_38 AC 458 ms
47,676 KB
testcase_39 AC 448 ms
47,804 KB
testcase_40 AC 462 ms
47,608 KB
testcase_41 AC 461 ms
47,676 KB
testcase_42 AC 465 ms
47,808 KB
testcase_43 AC 464 ms
47,680 KB
testcase_44 AC 463 ms
47,676 KB
testcase_45 AC 453 ms
47,684 KB
testcase_46 AC 447 ms
47,680 KB
testcase_47 AC 451 ms
47,808 KB
testcase_48 AC 466 ms
47,804 KB
testcase_49 AC 448 ms
47,680 KB
testcase_50 AC 439 ms
47,724 KB
権限があれば一括ダウンロードができます

ソースコード

diff #

#include <bits/stdc++.h>
using namespace std;
using ll = long long;
using ld = long double;
#define rep2(i, m, n) for (int i = (m); i < (n); ++i)
#define rep(i, n) rep2(i, 0, n)
#define drep2(i, m, n) for (int i = (m)-1; i >= (n); --i)
#define drep(i, n) drep2(i, n, 0)
#define all(a) (a).begin(), (a).end()
template<typename T = int> using V = vector<T>;
template<typename T = int> using P = pair<T, T>;
using Vi = V<int>;
using Vl = V<ll>;
using Vd = V<ld>;
using Vb = V<bool>;
using VVi = V<Vi>;
using VVl = V<Vl>;
using VVb = V<Vb>;
using Pi = P<int>;
using Pl = P<ll>;
using Pd = P<ld>;
template<typename T> vector<T> make_vec(size_t n, T a) { return vector<T>(n, a); }
template<typename... Ts> auto make_vec(size_t n, Ts... ts) { return vector<decltype(make_vec(ts...))>(n, make_vec(ts...)); }
template<typename T> inline int sz(T &x) { return x.size(); }
template<typename T> inline bool chmin(T &a, T b) { if (a > b) { a = b; return true; } return false; }
template<typename T> inline bool chmax(T &a, T b) { if (a < b) { a = b; return true; } return false; }
template<typename T1, typename T2> istream &operator>>(istream &is, pair<T1, T2> &p) { is >> p.first >> p.second; return is; }
template<typename T1, typename T2> ostream &operator<<(ostream &os, const pair<T1, T2> &p) { os << '(' << p.first << ", " << p.second << ')'; return os; }
template<typename T> istream &operator>>(istream &is, vector<T> &v) { for (auto &e : v) is >> e; return is; }
template<typename T> ostream &operator<<(ostream &os, const vector<T> &v) { for (auto &e : v) os << e << ' '; return os; }
template<typename T> inline int count_between(vector<T> &a, T l, T r) { return lower_bound(all(a), r) - lower_bound(all(a), l); } // [l, r)
inline int fLog2(const ll x) { assert(x > 0); return 63-__builtin_clzll(x); } // floor(log2(x))
inline int cLog2(const ll x) { assert(x > 0); return (x == 1) ? 0 : 64-__builtin_clzll(x-1); } // ceil(log2(x))
inline int popcount(const ll x) { return __builtin_popcountll(x); }
inline void fail() { cout << -1 << '\n'; exit(0); }
struct fast_ios { fast_ios(){ cin.tie(nullptr); ios::sync_with_stdio(false); cout << fixed << setprecision(20); }; } fast_ios_;
// const int INF  = 1<<30;
// const ll INFll = 1ll<<60;
// const ld EPS   = 1e-10;
// const ld PI    = acos(-1.0);
// const int MOD  = int(1e9)+7;
// const int MOD  = 998244353;


struct Eratos {
  vector<int> primes, min_factor;
  vector<bool> isprime;
  Eratos(int MAX) : primes(), isprime(MAX+1, true), min_factor(MAX+1, -1) {
    isprime[0] = isprime[1] = false;
    min_factor[0] = 0, min_factor[1] = 1;
    for (int i = 2; i <= MAX; i++) {
      if (!isprime[i]) continue;
      primes.push_back(i);
      min_factor[i] = i;
      for (int j = i*2; j <= MAX; j += i) {
        isprime[j] = false;
        if (min_factor[j] == -1) min_factor[j] = i;
      }
    }
  }
  // prime factorization
  vector<pair<int,int>> factorize(int n) {
    vector<pair<int,int>> res;
    while (n != 1) {
      int prime = min_factor[n];
      int exp = 0;
      while (min_factor[n] == prime) { ++exp; n /= prime; }
      res.emplace_back(prime, exp);
    }
    return res;
  }
  // enumerate divisors
  vector<int> divisors(int n) {
    vector<int> res({1});
    auto pf = factorize(n);
    for (auto p : pf) {
      int k = res.size();
      for (int i = 0; i < k; ++i) {
        int v = 1;
        for (int j = 0; j < p.second; ++j) {
          v *= p.first;
          res.push_back(res[i] * v);
        }
      }
    }
    return res;
  }
};

Eratos er(int(1e7)+2);


ll solve(ll x, ll y) {
  auto dv = er.divisors(y);
  ll res = 0;
  for (ll b : dv) {
    if (b % 2 == 0) continue;
    ll z = y / b * (b*b-1);
    if (z % (2*x) != 0) continue;
    ll a = z / (2*x);
    if (1 <= b && b < a && a <= int(1e8)) ++res;
  }
  if (y > 2*x) res += int(1e8) / y;
  return res;
} 


int main() {
  int Q; cin >> Q;

  rep(_, Q) {
    int x, y; cin >> x >> y;
    int ans = solve(x, y) + solve(y-x, y);
    cout << ans << '\n';
  }
}
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