#157310 (C++11) No.491 10^9+1と回文

• 問題: No.491 10^9+1と回文
• ユーザー: srup٩(๑`н´๑)۶
• 提出日時: 2017-03-11 15:39:14
• 言語: C++11 (gcc 11.4.0)
• 結果: AC
• 実行時間: 92 ms / 1,000 ms
• コード長: 1,022 bytes
• コンパイル時間: 1,470 ms
• コンパイル使用メモリ: 167,836 KB
• 実行使用メモリ: 12,928 KB
• 最終ジャッジ日時: 2024-04-08 16:15:26
• 合計ジャッジ時間: 13,443 ms
• ジャッジサーバーID （参考情報）: judge13 / judge11

入力	結果	実行時間; 実行使用メモリ
testcase_00	AC	84 ms; 12,928 KB
testcase_01	AC	90 ms; 12,928 KB
testcase_02	AC	85 ms; 12,928 KB
testcase_03	AC	90 ms; 12,928 KB
testcase_04	AC	87 ms; 12,928 KB
testcase_05	AC	90 ms; 12,928 KB
testcase_06	AC	87 ms; 12,928 KB
testcase_07	AC	87 ms; 12,928 KB
testcase_08	AC	86 ms; 12,928 KB
testcase_09	AC	88 ms; 12,928 KB
testcase_10	AC	86 ms; 12,928 KB
testcase_11	AC	89 ms; 12,928 KB
testcase_12	AC	87 ms; 12,928 KB
testcase_13	AC	89 ms; 12,928 KB
testcase_14	AC	89 ms; 12,928 KB
testcase_15	AC	87 ms; 12,928 KB
testcase_16	AC	87 ms; 12,928 KB
testcase_17	AC	91 ms; 12,928 KB
testcase_18	AC	88 ms; 12,928 KB
testcase_19	AC	89 ms; 12,928 KB
testcase_20	AC	85 ms; 12,928 KB
testcase_21	AC	88 ms; 12,928 KB
testcase_22	AC	85 ms; 12,928 KB
testcase_23	AC	89 ms; 12,928 KB
testcase_24	AC	88 ms; 12,928 KB
testcase_25	AC	84 ms; 12,928 KB
testcase_26	AC	88 ms; 12,928 KB
testcase_27	AC	87 ms; 12,928 KB
testcase_28	AC	92 ms; 12,928 KB
testcase_29	AC	86 ms; 12,928 KB
testcase_30	AC	88 ms; 12,928 KB
testcase_31	AC	88 ms; 12,928 KB
testcase_32	AC	84 ms; 12,928 KB
testcase_33	AC	87 ms; 12,928 KB
testcase_34	AC	86 ms; 12,928 KB
testcase_35	AC	90 ms; 12,928 KB
testcase_36	AC	90 ms; 12,928 KB
testcase_37	AC	86 ms; 12,928 KB
testcase_38	AC	86 ms; 12,928 KB
testcase_39	AC	86 ms; 12,928 KB
testcase_40	AC	88 ms; 12,928 KB
testcase_41	AC	85 ms; 12,928 KB
testcase_42	AC	89 ms; 12,928 KB
testcase_43	AC	87 ms; 12,928 KB
testcase_44	AC	87 ms; 12,928 KB
testcase_45	AC	88 ms; 12,928 KB
testcase_46	AC	89 ms; 12,928 KB
testcase_47	AC	90 ms; 12,928 KB
testcase_48	AC	88 ms; 12,928 KB
testcase_49	AC	85 ms; 12,928 KB
testcase_50	AC	87 ms; 12,928 KB
testcase_51	AC	85 ms; 12,928 KB
testcase_52	AC	87 ms; 12,928 KB
testcase_53	AC	90 ms; 12,928 KB
testcase_54	AC	92 ms; 12,928 KB
testcase_55	AC	89 ms; 12,928 KB
testcase_56	AC	90 ms; 12,928 KB
testcase_57	AC	90 ms; 12,928 KB
testcase_58	AC	87 ms; 12,928 KB
testcase_59	AC	92 ms; 12,928 KB
testcase_60	AC	86 ms; 12,928 KB
testcase_61	AC	87 ms; 12,928 KB
testcase_62	AC	87 ms; 12,928 KB
testcase_63	AC	86 ms; 12,928 KB
testcase_64	AC	88 ms; 12,928 KB
testcase_65	AC	85 ms; 12,928 KB
testcase_66	AC	87 ms; 12,928 KB
testcase_67	AC	90 ms; 12,928 KB
testcase_68	AC	89 ms; 12,928 KB
testcase_69	AC	89 ms; 12,928 KB
testcase_70	AC	87 ms; 12,928 KB
testcase_71	AC	85 ms; 12,928 KB
testcase_72	AC	89 ms; 12,928 KB
testcase_73	AC	85 ms; 12,928 KB
testcase_74	AC	85 ms; 12,928 KB
testcase_75	AC	87 ms; 12,928 KB
testcase_76	AC	88 ms; 12,928 KB
testcase_77	AC	90 ms; 12,928 KB
testcase_78	AC	90 ms; 12,928 KB
testcase_79	AC	89 ms; 12,928 KB
testcase_80	AC	88 ms; 12,928 KB
testcase_81	AC	89 ms; 12,928 KB
testcase_82	AC	88 ms; 12,928 KB
testcase_83	AC	86 ms; 12,928 KB
testcase_84	AC	86 ms; 12,928 KB
testcase_85	AC	86 ms; 12,928 KB
testcase_86	AC	88 ms; 12,928 KB
testcase_87	AC	84 ms; 12,928 KB
testcase_88	AC	86 ms; 12,928 KB
testcase_89	AC	88 ms; 12,928 KB
testcase_90	AC	88 ms; 12,928 KB
testcase_91	AC	88 ms; 12,928 KB
testcase_92	AC	88 ms; 12,928 KB
testcase_93	AC	88 ms; 12,928 KB
testcase_94	AC	86 ms; 12,928 KB
testcase_95	AC	89 ms; 12,928 KB
testcase_96	AC	91 ms; 12,928 KB
testcase_97	AC	87 ms; 12,928 KB
testcase_98	AC	88 ms; 12,928 KB
testcase_99	AC	87 ms; 12,928 KB
testcase_100	AC	88 ms; 12,928 KB
testcase_101	AC	86 ms; 12,928 KB
testcase_102	AC	84 ms; 12,928 KB
testcase_103	AC	85 ms; 12,928 KB
testcase_104	AC	88 ms; 12,928 KB
testcase_105	AC	89 ms; 12,928 KB

ソースコード

#include <bits/stdc++.h>
using namespace std;
typedef long long ll;
typedef vector<int> vint;
typedef pair<int,int> pint;
typedef vector<pint> vpint;
#define rep(i,n) for(int i=0;i<(n);i++)
#define reps(i,f,n) for(int i=(f);i<(n);i++)
#define each(it,v) for(__typeof((v).begin()) it=(v).begin();it!=(v).end();it++)
#define all(v) (v).begin(),(v).end()
#define eall(v) unique(all(v), v.end())
#define pb push_back
#define mp make_pair
#define fi first
#define se second
#define chmax(a, b) a = (((a)<(b)) ? (b) : (a))
#define chmin(a, b) a = (((a)>(b)) ? (b) : (a))
const int MOD = 1e9 + 7;
const int INF = 1e9;
const ll INFF = 1e18;

int main(void){
	ll n; cin >> n;
	ll cnt = 0;
	ll m = n / (1000000001);
	set<ll> se;
	for (int i = 1; i <= 100000; ++i){
		string left = to_string(i);
		string right = left; reverse(all(right));
		string even = left + right;
		string odd = left + right.substr(1);
		se.insert(stoll(odd)); se.insert(stoll(even));
	}
	for(auto u : se) if(u <= m) cnt++;
	printf("%lld\n", cnt);
	return 0;
}