結果
問題 | No.1383 Numbers of Product |
ユーザー | rniya |
提出日時 | 2021-02-07 21:24:43 |
言語 | C++17 (gcc 12.3.0 + boost 1.83.0) |
結果 |
AC
|
実行時間 | 993 ms / 2,000 ms |
コード長 | 5,625 bytes |
コンパイル時間 | 2,245 ms |
コンパイル使用メモリ | 207,512 KB |
実行使用メモリ | 46,988 KB |
最終ジャッジ日時 | 2024-05-02 10:17:49 |
合計ジャッジ時間 | 27,839 ms |
ジャッジサーバーID (参考情報) |
judge2 / judge3 |
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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 | 2 ms
5,248 KB |
testcase_01 | AC | 2 ms
5,376 KB |
testcase_02 | AC | 1 ms
5,376 KB |
testcase_03 | AC | 2 ms
5,376 KB |
testcase_04 | AC | 2 ms
5,376 KB |
testcase_05 | AC | 2 ms
5,376 KB |
testcase_06 | AC | 2 ms
5,376 KB |
testcase_07 | AC | 565 ms
28,536 KB |
testcase_08 | AC | 542 ms
28,272 KB |
testcase_09 | AC | 747 ms
42,108 KB |
testcase_10 | AC | 951 ms
46,476 KB |
testcase_11 | AC | 957 ms
45,968 KB |
testcase_12 | AC | 947 ms
46,476 KB |
testcase_13 | AC | 926 ms
45,068 KB |
testcase_14 | AC | 803 ms
42,360 KB |
testcase_15 | AC | 594 ms
29,816 KB |
testcase_16 | AC | 960 ms
46,092 KB |
testcase_17 | AC | 2 ms
5,376 KB |
testcase_18 | AC | 2 ms
5,376 KB |
testcase_19 | AC | 2 ms
5,376 KB |
testcase_20 | AC | 2 ms
5,376 KB |
testcase_21 | AC | 2 ms
5,376 KB |
testcase_22 | AC | 2 ms
5,376 KB |
testcase_23 | AC | 2 ms
5,376 KB |
testcase_24 | AC | 2 ms
5,376 KB |
testcase_25 | AC | 2 ms
5,376 KB |
testcase_26 | AC | 2 ms
5,376 KB |
testcase_27 | AC | 2 ms
5,376 KB |
testcase_28 | AC | 9 ms
5,376 KB |
testcase_29 | AC | 776 ms
42,240 KB |
testcase_30 | AC | 982 ms
46,860 KB |
testcase_31 | AC | 2 ms
5,376 KB |
testcase_32 | AC | 161 ms
12,468 KB |
testcase_33 | AC | 1 ms
5,376 KB |
testcase_34 | AC | 2 ms
5,376 KB |
testcase_35 | AC | 892 ms
44,036 KB |
testcase_36 | AC | 859 ms
42,764 KB |
testcase_37 | AC | 981 ms
46,864 KB |
testcase_38 | AC | 993 ms
46,988 KB |
testcase_39 | AC | 980 ms
46,864 KB |
testcase_40 | AC | 974 ms
46,860 KB |
testcase_41 | AC | 971 ms
46,860 KB |
testcase_42 | AC | 964 ms
46,984 KB |
testcase_43 | AC | 982 ms
46,860 KB |
testcase_44 | AC | 980 ms
46,860 KB |
testcase_45 | AC | 977 ms
46,948 KB |
testcase_46 | AC | 1 ms
5,376 KB |
testcase_47 | AC | 957 ms
46,220 KB |
testcase_48 | AC | 939 ms
46,344 KB |
testcase_49 | AC | 968 ms
46,736 KB |
testcase_50 | AC | 970 ms
46,752 KB |
testcase_51 | AC | 2 ms
5,376 KB |
testcase_52 | AC | 2 ms
5,376 KB |
ソースコード
#define LOCAL #include <bits/stdc++.h> using namespace std; #pragma region Macros typedef long long ll; typedef __int128_t i128; typedef unsigned int uint; typedef unsigned long long ull; #define ALL(x) (x).begin(), (x).end() template <typename T> istream& operator>>(istream& is, vector<T>& v) { for (T& x : v) is >> x; return is; } template <typename T> ostream& operator<<(ostream& os, const vector<T>& v) { for (int i = 0; i < (int)v.size(); i++) { os << v[i] << (i + 1 == (int)v.size() ? "" : " "); } return os; } template <typename T, typename U> ostream& operator<<(ostream& os, const pair<T, U>& p) { os << '(' << p.first << ',' << p.second << ')'; return os; } template <typename T, typename U, typename V> ostream& operator<<(ostream& os, const tuple<T, U, V>& t) { os << '(' << get<0>(t) << ',' << get<1>(t) << ',' << get<2>(t) << ')'; return os; } template <typename T, typename U, typename V, typename W> ostream& operator<<(ostream& os, const tuple<T, U, V, W>& t) { os << '(' << get<0>(t) << ',' << get<1>(t) << ',' << get<2>(t) << ',' << get<3>(t) << ')'; return os; } template <typename T, typename U> ostream& operator<<(ostream& os, const map<T, U>& m) { os << '{'; for (auto itr = m.begin(); itr != m.end();) { os << '(' << itr->first << ',' << itr->second << ')'; if (++itr != m.end()) os << ','; } os << '}'; return os; } template <typename T, typename U> ostream& operator<<(ostream& os, const unordered_map<T, U>& m) { os << '{'; for (auto itr = m.begin(); itr != m.end();) { os << '(' << itr->first << ',' << itr->second << ')'; if (++itr != m.end()) os << ','; } os << '}'; return os; } template <typename T> ostream& operator<<(ostream& os, const set<T>& s) { os << '{'; for (auto itr = s.begin(); itr != s.end();) { os << *itr; if (++itr != s.end()) os << ','; } os << '}'; return os; } template <typename T> ostream& operator<<(ostream& os, const multiset<T>& s) { os << '{'; for (auto itr = s.begin(); itr != s.end();) { os << *itr; if (++itr != s.end()) os << ','; } os << '}'; return os; } template <typename T> ostream& operator<<(ostream& os, const unordered_set<T>& s) { os << '{'; for (auto itr = s.begin(); itr != s.end();) { os << *itr; if (++itr != s.end()) os << ','; } os << '}'; return os; } template <typename T> ostream& operator<<(ostream& os, const deque<T>& v) { for (int i = 0; i < (int)v.size(); i++) { os << v[i] << (i + 1 == (int)v.size() ? "" : " "); } return os; } void debug_out() { cerr << '\n'; } template <class Head, class... Tail> void debug_out(Head&& head, Tail&&... tail) { cerr << head; if (sizeof...(Tail) > 0) cerr << ", "; debug_out(move(tail)...); } #ifdef LOCAL #define debug(...) \ cerr << " "; \ cerr << #__VA_ARGS__ << " :[" << __LINE__ << ":" << __FUNCTION__ << "]" << '\n'; \ cerr << " "; \ debug_out(__VA_ARGS__) #else #define debug(...) 42 #endif template <typename T> T gcd(T x, T y) { return y != 0 ? gcd(y, x % y) : x; } template <typename T> T lcm(T x, T y) { return x / gcd(x, y) * y; } template <class T1, class T2> inline bool chmin(T1& a, T2 b) { if (a > b) { a = b; return true; } return false; } template <class T1, class T2> inline bool chmax(T1& a, T2 b) { if (a < b) { a = b; return true; } return false; } #pragma endregion const int INF = 1e9; const long long IINF = 1e18; const int dx[4] = {1, 0, -1, 0}, dy[4] = {0, 1, 0, -1}; const char dir[4] = {'D', 'R', 'U', 'L'}; const long long MOD = 1000000007; // const long long MOD = 998244353; int main() { cin.tie(0); ios::sync_with_stdio(false); ll N, K, M; cin >> N >> K >> M; // Bは高々20とかまで // 先にB>=3での表し方がM-1かMになるものをチェックして、それがB=2で表せるかチェック // M=1のときはM>=2として表せるものを計算して除く unordered_map<ll, int> mp; for (int B = 3; B <= 20; B++) { for (int A = 1;; A++) { ll prod = 1; bool ok = true; for (int i = 0; i < B; i++) { ll nxt = K * i + A; if (2 * N / prod <= nxt) { ok = false; break; } prod *= nxt; } if (!ok) break; if (prod > N) break; mp[prod]++; } } auto check = [&](ll x) { int lb = 0, ub = INF + 10; while (ub - lb > 1) { int mid = (lb + ub) >> 1; (2 * N / (K + mid) <= mid || (K + mid) * mid >= x ? ub : lb) = mid; } return 2 * N / (K + ub) > ub && (K + ub) * ub == x; }; int ans = 0, sum = 0; for (auto p : mp) { bool ok = check(p.first); sum += ok; if (p.second != M - 1 && p.second != M) continue; int cur = p.second; cur += check(p.first); ans += (cur == M); } if (M == 1) { int lb = 0, ub = INF + 10; while (ub - lb > 1) { int mid = (ub + lb) >> 1; (2 * N / (K + mid) <= mid || (K + mid) * mid > N ? ub : lb) = mid; } ans += lb - sum; } cout << ans << '\n'; return 0; }