#590922 (C++17) No.1312 Snake Eyes

• 問題: No.1312 Snake Eyes
• ユーザー: 👑 jupiro
• 提出日時: 2020-12-09 01:25:50
• 言語: C++17 (gcc 13.2.0 + boost 1.83.0)
• 結果: AC
• 実行時間: 45 ms / 2,000 ms
• コード長: 1,655 bytes
• コンパイル時間: 1,375 ms
• コンパイル使用メモリ: 128,984 KB
• 実行使用メモリ: 4,384 KB
• 最終ジャッジ日時: 2023-08-20 11:14:26
• 合計ジャッジ時間: 5,239 ms
• ジャッジサーバーID （参考情報）: judge11 / judge12

入力	結果	実行時間; 実行使用メモリ
testcase_00	AC	2 ms; 4,380 KB
testcase_01	AC	2 ms; 4,380 KB
testcase_02	AC	2 ms; 4,380 KB
testcase_03	AC	1 ms; 4,384 KB
testcase_04	AC	1 ms; 4,380 KB
testcase_05	AC	2 ms; 4,380 KB
testcase_06	AC	2 ms; 4,384 KB
testcase_07	AC	2 ms; 4,380 KB
testcase_08	AC	2 ms; 4,384 KB
testcase_09	AC	1 ms; 4,384 KB
testcase_10	AC	2 ms; 4,380 KB
testcase_11	AC	2 ms; 4,384 KB
testcase_12	AC	1 ms; 4,384 KB
testcase_13	AC	2 ms; 4,384 KB
testcase_14	AC	2 ms; 4,380 KB
testcase_15	AC	2 ms; 4,384 KB
testcase_16	AC	2 ms; 4,384 KB
testcase_17	AC	2 ms; 4,380 KB
testcase_18	AC	2 ms; 4,380 KB
testcase_19	AC	2 ms; 4,380 KB
testcase_20	AC	2 ms; 4,380 KB
testcase_21	AC	2 ms; 4,380 KB
testcase_22	AC	2 ms; 4,384 KB
testcase_23	AC	2 ms; 4,380 KB
testcase_24	AC	2 ms; 4,380 KB
testcase_25	AC	2 ms; 4,384 KB
testcase_26	AC	2 ms; 4,380 KB
testcase_27	AC	2 ms; 4,380 KB
testcase_28	AC	2 ms; 4,384 KB
testcase_29	AC	1 ms; 4,380 KB
testcase_30	AC	1 ms; 4,384 KB
testcase_31	AC	2 ms; 4,384 KB
testcase_32	AC	2 ms; 4,380 KB
testcase_33	AC	2 ms; 4,380 KB
testcase_34	AC	2 ms; 4,380 KB
testcase_35	AC	2 ms; 4,384 KB
testcase_36	AC	2 ms; 4,380 KB
testcase_37	AC	2 ms; 4,380 KB
testcase_38	AC	2 ms; 4,380 KB
testcase_39	AC	3 ms; 4,384 KB
testcase_40	AC	3 ms; 4,384 KB
testcase_41	AC	3 ms; 4,380 KB
testcase_42	AC	2 ms; 4,384 KB
testcase_43	AC	3 ms; 4,384 KB
testcase_44	AC	2 ms; 4,384 KB
testcase_45	AC	2 ms; 4,380 KB
testcase_46	AC	3 ms; 4,380 KB
testcase_47	AC	2 ms; 4,380 KB
testcase_48	AC	39 ms; 4,380 KB
testcase_49	AC	35 ms; 4,384 KB
testcase_50	AC	29 ms; 4,384 KB
testcase_51	AC	15 ms; 4,380 KB
testcase_52	AC	44 ms; 4,380 KB
testcase_53	AC	34 ms; 4,380 KB
testcase_54	AC	39 ms; 4,380 KB
testcase_55	AC	20 ms; 4,380 KB
testcase_56	AC	25 ms; 4,384 KB
testcase_57	AC	26 ms; 4,380 KB
testcase_58	AC	34 ms; 4,380 KB
testcase_59	AC	14 ms; 4,380 KB
testcase_60	AC	26 ms; 4,380 KB
testcase_61	AC	44 ms; 4,380 KB
testcase_62	AC	19 ms; 4,380 KB
testcase_63	AC	2 ms; 4,380 KB
testcase_64	AC	3 ms; 4,384 KB
testcase_65	AC	6 ms; 4,384 KB
testcase_66	AC	2 ms; 4,384 KB
testcase_67	AC	2 ms; 4,384 KB
testcase_68	AC	4 ms; 4,380 KB
testcase_69	AC	2 ms; 4,380 KB
testcase_70	AC	36 ms; 4,380 KB
testcase_71	AC	23 ms; 4,380 KB
testcase_72	AC	3 ms; 4,380 KB
testcase_73	AC	2 ms; 4,380 KB
testcase_74	AC	2 ms; 4,380 KB
testcase_75	AC	2 ms; 4,380 KB
testcase_76	AC	44 ms; 4,384 KB
testcase_77	AC	45 ms; 4,384 KB
testcase_78	AC	44 ms; 4,384 KB
testcase_79	AC	34 ms; 4,380 KB
testcase_80	AC	44 ms; 4,380 KB
testcase_81	AC	45 ms; 4,384 KB
testcase_82	AC	45 ms; 4,384 KB
testcase_83	AC	45 ms; 4,380 KB
testcase_84	AC	45 ms; 4,384 KB
testcase_85	AC	41 ms; 4,380 KB
testcase_86	AC	38 ms; 4,380 KB
testcase_87	AC	22 ms; 4,380 KB

ソースコード

#include <iostream>
#include <string>
#include <sstream>
#include <stack>
#include <algorithm>
#include <cmath>
#include <queue>
#include <bitset>
#include <iomanip>
#include <limits>
#include <chrono>
#include <random>
#include <array>
#include <unordered_map>
#include <functional>
#include <complex>
#include <numeric>
#include <cctype>
#include <map>
#include <set>
#include <cstdlib>
#include <bitset>
#include <tuple>
#include <assert.h>
#include <deque>
#include <utility>
#include <fstream>

using namespace std;
typedef long long ll;
using ull = unsigned long long;

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 T> T gcd(T a, T b) { a = abs(a), b = abs(b); while (b > 0) { tie(a, b) = make_pair(b, a % b); }return a; }
//mt19937 rnd(chrono::steady_clock::now().time_since_epoch().count());

constexpr long long INF = 1LL << 60;
constexpr int inf = 1000000007;
//constexpr long long mod = 1000000007LL;
constexpr long long  mod = 998244353;


int main()
{

	cin.tie(nullptr);
	ios::sync_with_stdio(false);

	ll n; cin >> n;
	if (n == 1) {
		cout << 2 << "\n";
		return 0;
	}
	if (n == 2) {
		cout << 3 << "\n";
		return 0;
	}
	ll res = INF;
	for (ll i = 2; i * i <= n; i++) {
		ll cur = 1;
		ll b = 1;
		while (cur <= n) {
			if (n % cur == 0 and n / cur < i) {
				chmin(res, i);
			}
			b *= i;
			cur += b;
		}
	}

	//ii(p) = p * i + i = n
	for (ll i = 1; i * i <= n; i++) {
		if (n % i == 0) {
			ll t = n / i;
			t -= 1;
			if (t > i) chmin(res, t);
		}
	}
	cout << res << "\n";
}