#957527 (C++17) No.491 10^9+1と回文

• 問題: No.491 10^9+1と回文
• ユーザー: ルク
• 提出日時: 2024-03-04 17:15:14
• 言語: C++17 (gcc 13.3.0 + boost 1.87.0)
• 結果: WA
• 実行時間: -
• コード長: 2,488 bytes
• コンパイル時間: 2,120 ms
• コンパイル使用メモリ: 195,268 KB
• 最終ジャッジ日時: 2025-02-20 00:46:39
• ジャッジサーバーID （参考情報）: judge3 / judge4

ファイルパターン	結果
sample	AC * 3
other	AC * 32 WA * 71

ソースコード

1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
#include <bits/stdc++.h>
using namespace std;
#define rep(i, n) for (ll i = 0; i < (n); ++i)
#define rep1(i, n) for (ll i = 1; i < (n); ++i)
#define rrep(i, n) for (ll i = n; i > 0; --i)
#define bitrep(i, n) for (ll i = 0; i < (1 << n); ++i)
#define all(a) (a).begin(), (a).end()
#define rall(a) (a).rbegin(), (a).rend()
#define yesNo(b) ((b) ? "Yes" : "No")
using ll = long long;
using ull = unsigned long long;
using ld = long double;
string alphabet = "abcdefghijklmnopqrstuvwxyz";
string ALPHABET = "ABCDEFGHIJKLMNOPQRSTUVWXYZ";
const double pi = 3.141592653589793;
int smallMOD = 998244353;
int bigMOD = 1000000007;
int main()
{
    ll x;
    cin >> x;
    if (x < 1e9)
    {
        cout << 0 << endl;
    }
    else if (x < 1e10)
    {
        int ans = x / 1e9;
        if (x % 1000000000ll < ans)
        {
            ans--;
        }
        cout << ans << endl;
    }
    else if (x < 1e11)
    {
        int ans = 9 + x / 1e10;
        if (x % 10000000000ll < ans)
        {
            ans--;
        }
        cout << ans << endl;
    }
    else if (x < 1e12)
    {
        int ans = 18 + x / 1e11;
        if (x % 100000000000ll < ans)
        {
            ans--;
        }
        cout << ans << endl;
    }
    else if (x < 1e13)
    {
        int ans = 27 + x / 1e12;
        if (x % 1000000000000ll < ans)
        {
            ans--;
        }
        cout << ans << endl;
    }
    else if (x < 1e14)
    {
        int ans = 36 + x / 1e13;
        if (x % 10000000000000ll < ans)
        {
            ans--;
        }
        cout << ans << endl;
    }
    else if (x < 1e15)
    {
        int ans = 45 + x / 1e14;
        if (x % 100000000000000ll < ans)
        {
            ans--;
        }
        cout << ans << endl;
    }
    else if (x < 1e16)
    {
        int ans = 54 + x / 1e15;
        if (x % 1000000000000000ll < ans)
        {
            ans--;
        }
        cout << ans << endl;
    }
    else if (x < 1e17)
    {
        int ans = 63 + x / 1e16;
        if (x % 10000000000000000ll < ans)
        {
            ans--;
        }
        cout << ans << endl;
    }
    else if (x < 1e18)
    {
        int ans = 72 + x / 1e17;
        if (x % 100000000000000000ll < ans)
        {
            ans--;
        }
        cout << ans << endl;
    }
    else if (x < 1e19)
    {
        int ans = 81 + x / 1e18;
        if (x % 1000000000000000000ll < ans)
        {
            ans--;
        }
        cout << ans << endl;
    }
    return 0;
}
 
 
הההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההה
XXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXX