結果
| 問題 |
No.36 素数が嫌い!
|
| コンテスト | |
| ユーザー |
tonegawa
|
| 提出日時 | 2020-08-16 06:27:18 |
| 言語 | C++17 (gcc 13.3.0 + boost 1.87.0) |
| 結果 |
AC
|
| 実行時間 | 4 ms / 5,000 ms |
| コード長 | 2,811 bytes |
| コンパイル時間 | 1,478 ms |
| コンパイル使用メモリ | 118,664 KB |
| 最終ジャッジ日時 | 2025-01-13 01:54:27 |
|
ジャッジサーバーID (参考情報) |
judge3 / judge5 |
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| ファイルパターン | 結果 |
|---|---|
| sample | AC * 4 |
| other | AC * 26 |
コンパイルメッセージ
main.cpp: In function ‘void get(std::vector<long long int>&)’:
main.cpp:25:38: warning: ignoring return value of ‘int scanf(const char*, ...)’ declared with attribute ‘warn_unused_result’ [-Wunused-result]
25 | void get(vll &a){re(i,a.size()) scanf("%lld",&a[i]);}
| ~~~~~^~~~~~~~~~~~~~
main.cpp: In function ‘void get(std::vector<std::vector<long long int> >&)’:
main.cpp:26:56: warning: ignoring return value of ‘int scanf(const char*, ...)’ declared with attribute ‘warn_unused_result’ [-Wunused-result]
26 | void get(vvl &a){re(i,a.size()) re(j,a[0].size()) scanf("%lld",&a[i][j]);}
| ~~~~~^~~~~~~~~~~~~~~~~
ソースコード
#include <iostream>
#include <string>
#include <vector>
#include <queue>
#include <deque>
#include <algorithm>
#include <set>
#include <map>
#include <bitset>
#include <cmath>
#include <functional>
#include <iomanip>
#define vll vector<ll>
#define vvvl vector<vvl>
#define vvl vector<vector<ll>>
#define VV(a, b, c, d) vector<vector<d>>(a, vector<d>(b, c))
#define VVV(a, b, c, d) vector<vvl>(a, vvl(b, vll (c, d)));
#define re(c, b) for(ll c=0;c<b;c++)
#define rep(a,b,c) for(ll a=b;a<c;a++)
#define all(obj) (obj).begin(), (obj).end()
typedef long long int ll;
typedef long double ld;
using namespace std;
void get(vll &a){re(i,a.size()) scanf("%lld",&a[i]);}
void get(vvl &a){re(i,a.size()) re(j,a[0].size()) scanf("%lld",&a[i][j]);}
void print(vll &a){re(i,a.size()) cout<<a[i]<<(i==a.size()-1?"\n":" ");}
void print(vvl &a){re(i,a.size()) re(j,a[0].size())cout<<a[i][j]<<(j==a[0].size()-1?"\n":" ");}
namespace fact{
ll gcd(ll _a, ll _b) {
unsigned long long a = abs(_a), b = abs(_b);
if(a == 0) return b;
if(b == 0) return a;
int shift = __builtin_ctzll(a | b);
a >>= __builtin_ctzll(a);
do {
b >>= __builtin_ctzll(b);
if(a > b) std::swap(a, b);
b -= a;
}while(b);
return (a << shift);
}
template <class T, class U>
T modpow(T x, U n, T md) {
T r = 1 % md;
x %= md;
while(n) {
if(n & 1) r = (r * x) % md;
x = (x * x) % md;
n >>= 1;
}
return r;
}
bool is_prime(ll n) {
if(n<=1) return false;
if(n==2) return true;
if(n%2==0) return false;
ll d = n - 1;
while(d % 2 == 0) d /= 2;
for(ll a : {2, 3, 5, 7, 11, 13, 17, 19, 23, 29, 31, 37}) {
if(n <= a) break;
ll t = d, y = modpow<__int128_t>(a, t, n);
while(t != n - 1 && y != 1 && y != n - 1) {
y = __int128_t(y) * y % n, t <<= 1;
}
if(y != n - 1 && t % 2 == 0) {
return false;
}
}
return true;
}
ll rho(ll n){
if(is_prime(n)) return n;
if(n % 2 == 0) return 2;
ll c = 0;
while(true){
c = (3 * c + 1) % 24;
auto f = [&](ll x){return(__int128_t(x)*x+c)%n;};
ll st = 0;
while(true){
st++;
ll x = st%n, y = f(x);
while(true){
ll g = gcd(abs(x-y), n);
if(g==1) x = f(x), y = f(f(y));
else if(g==n) break;
else return g;
}
}
}
}
vll factorize(ll n) {
if(n == 1) return {};
ll x = rho(n);
if(x == n) return {x};
vll le = factorize(x);
vll ri = factorize(n / x);
le.insert(le.end(), ri.begin(), ri.end());
return le;
}
}
int main(int argc, char const *argv[]) {
ll n;std::cin >> n;
vll d = fact::factorize(n);
if(d.size()>=3) std::cout << "YES" << '\n';
else std::cout << "NO" << '\n';
}
tonegawa