結果

問題 No.888 約数の総和
ユーザー dyktr_06dyktr_06
提出日時 2023-01-18 06:07:13
言語 C++17
(gcc 13.3.0 + boost 1.87.0)
結果
AC  
実行時間 2 ms / 2,000 ms
コード長 7,609 bytes
コンパイル時間 4,010 ms
コンパイル使用メモリ 265,028 KB
最終ジャッジ日時 2025-02-10 04:07:41
ジャッジサーバーID
(参考情報)
judge4 / judge1
このコードへのチャレンジ
(要ログイン)
ファイルパターン 結果
sample AC * 3
other AC * 30
権限があれば一括ダウンロードができます
コンパイルメッセージ
main.cpp:62:9: warning: #pragma once in main file
   62 | #pragma once
      |         ^~~~

ソースコード

diff #
プレゼンテーションモードにする

#include <bits/stdc++.h>
#include <atcoder/all>
using namespace std;
using namespace atcoder;
#define overload4(_1, _2, _3, _4, name, ...) name
#define rep1(n) for(int i = 0; i < (int)(n); ++i)
#define rep2(i, n) for(int i = 0; i < (int)(n); ++i)
#define rep3(i, a, b) for(int i = (a); i < (int)(b); ++i)
#define rep4(i, a, b, c) for(int i = (a); i < (int)(b); i += (c))
#define rep(...) overload4(__VA_ARGS__, rep4, rep3, rep2, rep1)(__VA_ARGS__)
#define rrep(i,n) for(int i = (int)(n) - 1; i >= 0; --i)
#define ALL(a) a.begin(), a.end()
#define Sort(a) sort(a.begin(), a.end())
#define RSort(a) sort(a.rbegin(), a.rend())
typedef long long int ll;
typedef unsigned long long ul;
typedef long double ld;
typedef vector<int> vi;
typedef vector<long long> vll;
typedef vector<char> vc;
typedef vector<string> vst;
typedef vector<double> vd;
typedef vector<long double> vld;
typedef pair<long long, long long> P;
template<class T> long long sum(const T& a){ return accumulate(a.begin(), a.end(), 0LL); }
template<class T> auto min(const T& a){ return *min_element(a.begin(), a.end()); }
template<class T> auto max(const T& a){ return *max_element(a.begin(), a.end()); }
const long long MINF = 0x7fffffffffff;
const long long INF = 0x1fffffffffffffff;
const long long MOD = 998244353;
const long double EPS = 1e-9;
const long double PI = acos(-1);
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; }
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(T &in : v) is >> in; 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 S> ostream &operator<<(ostream &os, const map<T, S> &mp){ for(auto &[key, val] : mp){ os << key << ":" << val << " ";
    } return os; }
template <typename T> ostream &operator<<(ostream &os, const set<T> &st){ auto itr = st.begin(); for(int i = 0; i < (int)st.size(); ++i){ os << *itr
    << (i + 1 != (int)st.size() ? " " : ""); itr++; } return os; }
template <typename T> ostream &operator<<(ostream &os, const multiset<T> &st){ auto itr = st.begin(); for(int i = 0; i < (int)st.size(); ++i){ os <<
    *itr << (i + 1 != (int)st.size() ? " " : ""); itr++; } return os; }
template <typename T> ostream &operator<<(ostream &os, queue<T> q){ while(q.size()){ os << q.front() << " "; q.pop(); } return os; }
template <typename T> ostream &operator<<(ostream &os, deque<T> q){ while(q.size()){ os << q.front() << " "; q.pop_front(); } return os; }
template <typename T> ostream &operator<<(ostream &os, stack<T> st){ while(st.size()){ os << st.top() << " "; st.pop(); } return os; }
template <class T, class Container, class Compare> ostream &operator<<(ostream &os, priority_queue<T, Container, Compare> pq){ while(pq.size()){ os
    << pq.top() << " "; pq.pop(); } return os; }
template<class T, class U> inline T vin(T& vec, U n) { vec.resize(n); for(int i = 0; i < (int) n; ++i) cin >> vec[i]; return vec; }
template<class T> inline void vout(T vec, string s = "\n"){ for(auto x : vec) cout << x << s; }
template<class... T> void in(T&... a){ (cin >> ... >> a); }
void out(){ cout << '\n'; }
template<class T, class... Ts> void out(const T& a, const Ts&... b){ cout << a; (cout << ... << (cout << ' ', b)); cout << '\n'; }
template<class T, class U> void inGraph(vector<vector<T>>& G, U n, U m, bool directed = false){ G.resize(n); for(int i = 0; i < m; ++i){ int a, b;
    cin >> a >> b; a--, b--; G[a].push_back(b); if(!directed) G[b].push_back(a); } }
#pragma once
// Rho::rabin_miller(N) : N (N <= 2^64 ) O(log N)
// Rho::factorial(N) : N O(N^(1/4))
// Rho::divisor(N) : N O(N^(1/4) log N)
namespace Rho{
unsigned long long mul(unsigned long long a, unsigned long long b, const unsigned long long mod) {
long long ret = a * b - mod * (unsigned long long)(1.0L / mod * a * b);
return ret + mod * (ret < 0) - mod * (ret >= (long long) mod);
}
bool rabin_miller(unsigned long long n){
switch(n){
case 0: // fall-through
case 1: return false;
case 2: return true;
}
if(n % 2 == 0) return false;
vector<long long> A = {2, 325, 9375, 28178, 450775, 9780504, 1795265022};
unsigned long long s = 0, d = n - 1;
while(d % 2 == 0){
s++;
d >>= 1;
}
auto modpow = [](unsigned long long x, unsigned long long e, const unsigned long long mod) -> unsigned long long {
unsigned long long ret = 1 % mod;
x %= mod;
while(e > 0){
if(e & 1) ret = mul(ret, x, mod);
x = mul(x, x, mod);
e >>= 1;
}
return ret;
};
for(auto a : A){
if(a % n == 0) return true;
unsigned long long t, x = modpow(a, d, n);
if(x != 1){
for(t = 0; t < s; ++t){
if(x == n - 1) break;
x = mul(x, x, n);
}
if(t == s) return false;
}
}
return true;
}
mt19937_64 rng(chrono::system_clock::now().time_since_epoch().count());
unsigned long long FindFactor(unsigned long long n) {
if(n == 1 || rabin_miller(n)) return n;
if(n % 2 == 0) return 2;
unsigned long long c = 1, x = 0, y = 0, t = 0, prod = 2, x0 = 1, q;
auto f = [&](unsigned long long X) { return mul(X, X, n) + c;};
while (t++ % 128 or __gcd(prod, n) == 1) {
if(x == y) c = rng() % (n-1) + 1, x = x0, y = f(x);
if((q = mul(prod, max(x, y) - min(x, y), n))) prod = q;
x = f(x), y = f(f(y));
}
return __gcd(prod, n);
}
vector<unsigned long long> factorize(unsigned long long x) {
if(x == 1) return {};
unsigned long long a = FindFactor(x), b = x / a;
if(a == x) return {a};
vector<unsigned long long> L = factorize(a), R = factorize(b);
L.insert(L.end(), R.begin(), R.end());
return L;
}
vector<unsigned long long> divisor(unsigned long long x){
vector<unsigned long long> factor = Rho::factorize(x);
map<unsigned long long, int> countFactor;
for(auto x : factor){
if(countFactor.count(x) == 0) countFactor[x] = 0;
countFactor[x]++;
}
vector<unsigned long long> ret = {1};
for(auto [x, cnt] : countFactor){
vector<unsigned long long> tmp;
for(auto y : ret){
unsigned long long z = y;
for(int i = 0; i < cnt + 1; i++){
tmp.push_back(z);
z *= x;
}
}
ret = tmp;
}
return ret;
}
}
ll n;
void input(){
in(n);
}
void solve(){
out(sum(Rho::divisor(n)));
}
int main(){
ios::sync_with_stdio(false);
cin.tie(nullptr);
cout << fixed << setprecision(20);
input();
solve();
}
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