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QOJ

IDProblemSubmitterResultTimeMemoryLanguageFile sizeSubmit timeJudge time
#772723#9622. 有限小数KeeperHihiWA 243ms3652kbC++23980b2024-11-22 21:24:012024-11-22 21:24:04

Judging History

你现在查看的是最新测评结果

  • [2024-11-22 21:24:04]
  • 评测
  • 测评结果:WA
  • 用时:243ms
  • 内存:3652kb
  • [2024-11-22 21:24:01]
  • 提交

answer

#include <bits/stdc++.h>
using namespace std;
using i64 = long long;
#define int i64

const int inf = 1e18;
void solve() {
    int a, b;
    cin >> a >> b;
    int k = b;
    while (k % 2 == 0) k /= 2;
    while (k % 5 == 0) k /= 5;
    if (k == 1) {
        cout << "0 1\n";
        return;
    }
    pair<int, int> ans = {inf, inf};
    for (int i = 1; i * k <= inf; i *= 2) {
        for (int j = 1; j * i * k <= inf; j *= 5) {
            int v = i * j * a;
            int c = k - v % k;
            int d = b * i * j;
            int g = gcd(c, d);
            c /= g;
            d /= g;
            if (d <= 1e9) {
                ans = min(ans, {c, d});
            }
        }
    }
    cout << ans.first << ' ' << ans.second << "\n";
}

signed main() {
    ios::sync_with_stdio(false);
    cin.tie(nullptr);
    cout.tie(nullptr);

    int t = 1;
    cin >> t;
    
    while (t--) {
        solve();
    }

    return 0;
}

Details

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Test #1:

score: 100
Accepted
time: 1ms
memory: 3580kb

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: 243ms
memory: 3652kb

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 -9071744073709551616
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 -7002652276834551616
3 347500
1...

result:

wrong answer Integer -9071744073709551616 violates the range [1, 10^9]