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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
#737529#9622. 有限小数rikka_lyly#WA 60ms3656kbC++201.5kb2024-11-12 16:05:352024-11-12 16:05:35

Judging History

你现在查看的是最新测评结果

  • [2024-11-12 16:05:35]
  • 评测
  • 测评结果:WA
  • 用时:60ms
  • 内存:3656kb
  • [2024-11-12 16:05:35]
  • 提交

answer

#include <bits/stdc++.h>
using namespace std;

#define ll long long
#define ull unsigned long long
#define int ll
#define INF 0x3f3f3f3f3f3f3f3f
#define MAXD 1000000000

ll inv(ll x, ll p);

ll qpow(ll a, ll b, ll p = 1e18 + 7)//默认情况下认为到不了这么大
{
    if(b < 0)
        return inv(qpow(a, -b, p), p);
    ll ans = 1;
    while (b)
    {
        if(b & 1)
            ans = ans * a % p;
        a = a * a % p;
        b >>= 1;
    }
    return ans;
}
ll inv(ll x, ll p)
{
    return qpow(x, p - 2, p);
}

void solve()
{
    ll a, b;
    cin >> a >> b;
    ll x = b, p1 = 0, q1 = 0;
    while (x % 2 == 0)
    {
        x /= 2;
        p1++;
    }
    while (x % 5 == 0)
    {
        x /= 5;
        q1++;
    }
    if(x == 1)
    {
        cout << 0 << " " << 1 << '\n';
        return;
    }
    pair<int, int> ans = {INF, INF};
    for (int p2 = 0; ; p2++)
    {
        int tp = x * qpow(2, p2);
        if(tp > MAXD)
            break;
        for (int q2 = 0; ; q2++)
        {
            ll d = x * qpow(2, p2) * qpow(5, q2);
            if(d > MAXD)
                break;
            ll c = (x - a * qpow(2, p2 - p1, x) % x * qpow(5, q2 - q1, x) % x) % x;
            ans = min(ans, {c, d});
        }
    }
    cout << ans.first << " " << ans.second << '\n';
}

signed main()
{
    ios::sync_with_stdio(false);
    cin.tie(0), cout.tie(0);
    int t;
    cin >> t;
    while (t--)
    {
        solve();
    }
}

詳細信息

Test #1:

score: 100
Accepted
time: 0ms
memory: 3588kb

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: 60ms
memory: 3656kb

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 54272
1 6
1 7
1 231680000
23 3936
1 36096000
5 326
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 3
3 347500
1 944
1 43600
1 76
1 430000
1 6336
1 291...

result:

wrong answer The result is not terminating.(Testcase 71)