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QOJ

IDProblemSubmitterResultTimeMemoryLanguageFile sizeSubmit timeJudge time
#738419#9622. 有限小数huo_hua_yaWA 214ms3676kbC++231.4kb2024-11-12 19:01:202024-11-12 19:01:22

Judging History

你现在查看的是最新测评结果

  • [2024-11-12 19:01:22]
  • 评测
  • 测评结果:WA
  • 用时:214ms
  • 内存:3676kb
  • [2024-11-12 19:01:20]
  • 提交

answer

#include <bits/stdc++.h>
using namespace std;
using ll = long long;
const int N = 1e6 + 7;
const int mod = 998244353;
#define int ll
std::vector<int> vc;
void solve()
{
    ll a, b;
    cin >> a >> b;
    int c = 1e9, d = 1e9;
    for (auto x : vc)
    {
        int l = 0, r = x;
        auto check = [&](int mid)
        {
            double ab = 1.0 * a / b;
            double now = 1.0 * mid / x;
            if (now < ab)
                return false;
            else
                return true;
        };
        while (l < r)
        {
            int mid = l + r >> 1;
            if (check(mid))
                r = mid;
            else
                l = mid + 1;
        }
        ll lt=b*l,at = x*a;
        ll gf = b*x;
        ll tal = lt - at;
        ll gc = __gcd(gf,tal);
        gf/=gc;
        tal/=gc;
        if (tal < c&&d<=1e9)
        {
            c = tal, d = gf;
        }
    }
    if (c == 1e9)
    {
        cout << 0 << ' ' << 1 << '\n';
    }
    cout << c << ' ' << d << '\n';
}
signed main()
{
    ios::sync_with_stdio(0), cin.tie(0), cout.tie(0);
    for (ll now = 1; now <= 1000000000; now *= 2)
        for (ll tmp = 1; tmp * now <= 1000000000; tmp *= 5)
        {
            vc.push_back(now * tmp);
        }
    sort(vc.begin(), vc.end());
    int _ = 1;
    cin >> _;
    while (_--)
        solve();
    return 0;
}

Details

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Test #1:

score: 100
Accepted
time: 1ms
memory: 3676kb

input:

4
1 2
2 3
3 7
19 79

output:

0 1
1 3
1 14
3 316

result:

ok 4 case(s)

Test #2:

score: -100
Wrong Answer
time: 214ms
memory: 3668kb

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 12
1 54272
1 60
1 7
1 231680000
23 3936
1 36096000
4 1591796875
1 63360
0 1
1 31232
0 1
1 4880
1 10750
1 18500
1 11714560
1 331250
1 2944
1 31
1 6
1 289600000
1 455000
1 58880
1 51840
0 1
1 304
0 1
1 415
1 19328000
1 765000000
1 4640
1 608
1 72192
3 775
1 480
1 3558400000
1 944
1 43600
1 76
1 4300...

result:

wrong answer Integer 1591796875 violates the range [1, 10^9]