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ID题目提交者结果用时内存语言文件大小提交时间测评时间
#742205#9622. 有限小数F0givenersWA 7ms3668kbC++202.2kb2024-11-13 16:04:422024-11-13 16:04:42

Judging History

你现在查看的是最新测评结果

  • [2024-11-13 16:04:42]
  • 评测
  • 测评结果:WA
  • 用时:7ms
  • 内存:3668kb
  • [2024-11-13 16:04:42]
  • 提交

answer

#include <bits/stdc++.h>
using namespace std;
using ui = unsigned int;
using ull = unsigned long long;
using ll = long long;
#define endl '\n'
using pii = pair<int, int>;
using pll = pair<ll, ll>;
const int maxn = 2e5 + 10;
const int mod = 1000000007;
#define inl inline
#define fr(i, a, b) for (int i = a; i <= b; i++)
#define ford(i, a, b) for (int i = a; i >= b; i--)
#define forall(i, a) for (auto &i : a)

/**
   ____         ___ _____
  / ___| _   _ / _ \___ /
  \___ \| | | | | | ||_ \
   ___) | |_| | |_| |__) |
  |____/ \__, |\___/____/
         |___/
*/
istream &operator>>(istream &in, vector<int> &v)
{
    for (auto &i : v)
        in >> i;
    return in;
}
ostream &operator<<(ostream &out, vector<int> &v)
{
    for (auto &i : v)
        out << i << " ";
    return out;
}
bool _output = 1;

#define int ll

int exgcd(int &x, int &y, int a, int b)
{
    if (b == 0)
    {
        x = 1, y = 0;
        return a;
    }
    int d = exgcd(x, y, b, a % b);
    int z = x;
    x = y;
    y = z - a / b * y;
    return d;
}
void solve()
{
    int a, b;
    cin >> a >> b;
    int p = 1;
    while (b % 2 == 0)
        b /= 2, p *= 2;
    while (b % 5 == 0)
        b /= 5, p *= 5;

    // cout << p << endl;
    if (b == 1)
    {
        cout << "0 1" << endl;
        return;
    }
    // b = b / p;

    int x, y;
    int g = gcd(b, p);

    exgcd(x, y, b, p);
    // bx+py = gcd(b,p) ;
    // cout << gcd(b, p) << endl;
    y = y / g * a;
    a = y;
    pll ans = {1e18, 1e18};
    for (int t1 = 1; t1 * b <= 1e9; t1 *= 2)
    {
        for (int t2 = 1; t1 * t2 * b <= 1e9; t2 *= 5)
        {

            int q = t1 * t2;
            int c = (((q * a) + b - 1) / b) * b - q * a;
            int d = q * b;
            if (c < ans.first)
            {
                ans = {c, d};
            }
        }
    }
    // cout << (1876 % 7 == 0) << endl;
    cout << ans.first << " " << ans.second << endl;
}
signed main()
{
    ios::sync_with_stdio(false);
    cin.tie(0);
    cout.tie(0);
    int _ = 1;
    if (_output)
        cin >> _;
    while (_--)
        solve();
    return 0;
}

详细

Test #1:

score: 100
Accepted
time: 0ms
memory: 3668kb

input:

4
1 2
2 3
3 7
19 79

output:

0 1
1 3
1 4375
3 316

result:

ok 4 case(s)

Test #2:

score: -100
Wrong Answer
time: 7ms
memory: 3648kb

input:

10000
11 12
28 53
17 60
2 35
17 181
80 123
68 141
79 163
71 99
13 64
33 61
15 32
16 61
11 86
33 74
128 143
40 53
7 23
30 31
5 6
86 181
73 91
13 23
71 81
1 2
7 38
117 160
33 83
129 151
88 153
25 58
16 19
19 141
95 124
43 96
71 139
11 59
106 109
93 152
34 43
17 99
1 57
20 159
16 25
5 73
159 170
172 17...

output:

1 3
1 828125000
2 3
1 7
1 231680000
23 960937500
1 36096000
5 326
1 63360
0 1
1 61000
0 1
1 4880
42 344
36 2890625
1 11714560
1 331250
1 898437500
1 31
2 3
1 289600000
1 455000
1 115000000
1 1265625
0 1
18 4750
0 1
1 415
1 235937500
1 765000000
28 29000
1 2968750
1 4406250
3 775
2 15
3 347500
1 944
...

result:

wrong answer Jury found better answer than participant's 1 < 2 (Testcase 3)