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QOJ

IDProblemSubmitterResultTimeMemoryLanguageFile sizeSubmit timeJudge time
#740492#9622. 有限小数qzhfxWA 1ms3536kbC++231.9kb2024-11-13 10:08:262024-11-13 10:08:27

Judging History

你现在查看的是最新测评结果

  • [2024-11-13 10:08:27]
  • 评测
  • 测评结果:WA
  • 用时:1ms
  • 内存:3536kb
  • [2024-11-13 10:08:26]
  • 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 __int128
std::vector<int> vc;
void solve()
{
    ll a, b;
    cin >> a >> b;
    int aa = a, bb = b;
    ll c = 1e9, d = 1e9;
    ll k = 1;
    ll p = b;
    while(p%2==0){
        p/=2;
        k *=2;
    }
    while(p%5==0){
        p/=5;
        k *=5;
    }
    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 * k;
        __int128 gf = b * x;
        __int128 tal = lt - at;
        ll gc = __gcd(gf, tal);
        gf /= gc;
        tal /= gc;
        // int bb = b;
        // int gc = __gcd(bb, x);
        // int gf = bb / gc * x;
        // int tal = l * bb / gc - aa * x / gc;
        // gc = __gcd(tal, gf);
        // tal /= gc, gf /= gc;
        if (tal < c && gf <= 1e9 && gf >= 1)
        {
            c = tal, d = gf;
        }
    }
    if (c == 1e9 || c == 0)
    {
        cout << 0 << ' ' << 1 << '\n';
        return;
    }

    cout << c << ' ' << d << '\n';
}
signed main()
{
    ios::sync_with_stdio(0), cin.tie(0), cout.tie(0);
    for (int now = 1; now <= 1e9; now *= 2)
        for (int tmp = 1; tmp <= 1e9; tmp *= 5)
        {
            ll sum = tmp * now;
            if (sum > 1e9)
                continue;
            vc.push_back(now * tmp);
        }
    sort(vc.begin(), vc.end());
    ll _ = 1;
    cin >> _;
    while (_--)
        solve();
    return 0;
}

Details

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Test #1:

score: 0
Wrong Answer
time: 1ms
memory: 3536kb

input:

4
1 2
2 3
3 7
19 79

output:

-122070312 244140625
-2 3
-3 7
1 497025024

result:

wrong answer Integer -122070312 violates the range [0, 10^9]