結果
問題 | No.1243 約数加算 |
ユーザー | siro53 |
提出日時 | 2020-10-02 22:25:52 |
言語 | C++17 (gcc 12.3.0 + boost 1.83.0) |
結果 |
AC
|
実行時間 | 221 ms / 2,000 ms |
コード長 | 4,744 bytes |
コンパイル時間 | 2,419 ms |
コンパイル使用メモリ | 223,476 KB |
実行使用メモリ | 6,944 KB |
最終ジャッジ日時 | 2024-07-17 21:53:09 |
合計ジャッジ時間 | 3,731 ms |
ジャッジサーバーID (参考情報) |
judge1 / judge3 |
(要ログイン)
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
6,812 KB |
testcase_01 | AC | 2 ms
6,944 KB |
testcase_02 | AC | 1 ms
6,944 KB |
testcase_03 | AC | 2 ms
6,944 KB |
testcase_04 | AC | 19 ms
6,944 KB |
testcase_05 | AC | 221 ms
6,940 KB |
testcase_06 | AC | 211 ms
6,940 KB |
testcase_07 | AC | 97 ms
6,940 KB |
testcase_08 | AC | 189 ms
6,940 KB |
testcase_09 | AC | 5 ms
6,944 KB |
ソースコード
#include <bits/stdc++.h> using namespace std; template <class T> inline bool chmax(T &a, T b) { if(a < b) { a = b; return 1; } return 0; } template <class T> inline bool chmin(T &a, T b) { if(a > b) { a = b; return 1; } return 0; } #define DEBUG #ifdef DEBUG template <class T, class U> ostream &operator<<(ostream &os, const pair<T, U> &p) { os << '(' << p.first << ',' << p.second << ')'; return os; } template <class T> ostream &operator<<(ostream &os, const vector<T> &v) { os << '{'; for(int i = 0; i < (int)v.size(); i++) { if(i) { os << ','; } os << v[i]; } os << '}'; return os; } void debugg() { cerr << endl; } template <class T, class... Args> void debugg(const T &x, const Args &... args) { cerr << " " << x; debugg(args...); } #define debug(...) \ cerr << __LINE__ << " [" << #__VA_ARGS__ << "]:", debugg(__VA_ARGS__) #define dump(x) cerr << __LINE__ << " " << #x << " = " << (x) << endl #else #define debug(...) (void(0)) #define dump(x) (void(0)) #endif struct Setup { Setup() { cin.tie(0); ios::sync_with_stdio(false); cout << fixed << setprecision(15); } } __Setup; using ll = long long; #define ALL(v) (v).begin(), (v).end() #define RALL(v) (v).rbegin(), (v).rend() const double EPS = 1e-7; const int INF = 1 << 30; const ll LLINF = 1LL << 60; constexpr int MOD = 1000000007; const int dx[4] = {1, 0, -1, 0}; const int dy[4] = {0, 1, 0, -1}; //------------------------------------- struct FastFactorize { ll mul(ll a, ll b, ll c) { return (__int128)a * b % c; } ll power(ll a, ll b, ll mod) { ll res = 1; while(b) { if(b & 1) { res = mul(res, a, mod); } a = mul(a, a, mod); b >>= 1; } return res; } bool isPrime(ll n) { if(!(n & 1) && n != 2) { return false; } ll d = n - 1; int s = __builtin_ctzll(d); d >>= s; vector<int> A; if(n <= 1000000000) { A = {2, 3, 5, 7}; } else { A = {2, 3, 5, 7, 11, 13, 17, 19, 23, 29, 31, 37}; } for(int a : A) { ll p = power(a, d, n); int i = s; while(p != 1 && p != n - 1 && a % n && (--i)) { p = mul(p, p, n); } if(p != n - 1 && i != s) { return false; } } return true; } ll rho(ll n) { auto f = [&](ll a) { return mul(a, a, n) + 1; }; ll x = 0, y = 0, p = 2, q; int i = 1, t = 0; while((t++) % 40 || gcd(p, n) == 1) { if(x == y) { x = ++i; y = f(x); } if(q = mul(p, abs(y - x), n)) { p = q; } x = f(x); y = f(f(y)); } return gcd(p, n); } vector<ll> factor(ll n) { if(n == 1) { return {}; } if(isPrime(n)) { return {n}; } ll a = rho(n); assert(a != n && a != 1); auto l = factor(a), r = factor(n / a); l.insert(l.end(), r.begin(), r.end()); return l; } }; vector<ll> divisor(ll n) { FastFactorize f; auto v = f.factor(n); sort(v.begin(), v.end()); map<ll, vector<ll>> mp; ll now = 0; ll tmp = 0; vector<ll> ls; for(auto i : v) { if(now != i) { tmp = 1; now = i; ls.push_back(now); mp[now].push_back(1); } tmp *= i; mp[now].push_back(tmp); } vector<ll> div; function<void(int, ll)> calc = [&](int cur, ll val) { if(cur == mp.size()) { div.push_back(val); return; } for(auto i : mp[ls[cur]]) { calc(cur + 1, val * i); } }; calc(0, 1); sort(div.begin(), div.end()); div.erase(unique(div.begin(), div.end()), div.end()); return div; } void solve() { ll a, b; cin >> a >> b; ll now = a; vector<ll> ans; while(now < b) { auto y = divisor(now); auto it = upper_bound(ALL(y), b - now); if(it != y.begin()) { it--; } ans.emplace_back(*it); now += *it; } assert(now == b); assert((int)ans.size() <= 120); cout << ans.size() << "\n"; for(int i = 0; i < (int)ans.size(); i++) { cout << ans[i] << " \n"[i + 1 == (int)ans.size()]; } } int main() { int t; cin >> t; while(t--) { solve(); } }