QOJ.ac

QOJ

IDProblemSubmitterResultTimeMemoryLanguageFile sizeSubmit timeJudge time
#766337#9622. 有限小数lonely_log#WA 6ms3636kbC++17906b2024-11-20 16:59:432024-11-20 16:59:46

Judging History

你现在查看的是最新测评结果

  • [2024-11-20 16:59:46]
  • 评测
  • 测评结果:WA
  • 用时:6ms
  • 内存:3636kb
  • [2024-11-20 16:59:43]
  • 提交

answer

#include<bits/stdc++.h>
#define i64 long long
#define Mod 998244353
const int INF = 1000000000;
i64 gcd(i64 a,i64 b){
    return b == 0 ? a : gcd(b,a % b); 
}
i64 a,b;
void solve(){
    std::cin >> a >> b;
    i64 _b = b;
    while(_b % 2 == 0)
        _b >>= 1;
    while(_b % 5 == 0)
        _b /= 5;
    if(_b == 1){
        std::cout << "0 1\n";
        return ;
    } 
    i64 c = INF;
    i64 d = INF;
    for(i64 i = 1; b * i <= 1e9 ; i *= 2){
        for(i64 j = 1; b * i * j <= 1e9; j *= 5){
            i64 x = a * i * j % _b;
            if(c > _b - x)
                c = _b - x,d = b * i * j;
        }
    }
    i64 g = gcd(d,c);
    c /= g;
    d /= g;
    std::cout << c << ' ' << d << '\n';
	return ;
}
int main(){
	std::ios::sync_with_stdio(0);
	std::cin.tie(0); std::cout.tie(0);
	int tes;
	std::cin >> tes;
	while(tes--)
		solve();
	return 0;
}

Details

Tip: Click on the bar to expand more detailed information

Test #1:

score: 100
Accepted
time: 0ms
memory: 3596kb

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: 6ms
memory: 3636kb

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 828125000
1 60
1 109375
1 231680000
23 960937500
1 36096000
5 326
1 63360
0 1
1 61000
0 1
1 4880
1 10750
1 18500
1 11714560
1 331250
1 898437500
1 31
1 6
1 289600000
1 455000
1 115000000
1 1265625
0 1
1 29687500
0 1
1 415
1 235937500
1 765000000
1 181250
1 2968750
1 4406250
3 24800
1 480
3 34...

result:

wrong answer Jury found better answer than participant's 2 < 3 (Testcase 391)