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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
#739824#9622. 有限小数MEshooterWA 27ms3656kbC++201.4kb2024-11-12 23:18:352024-11-12 23:18:40

Judging History

你现在查看的是最新测评结果

  • [2024-11-12 23:18:40]
  • 评测
  • 测评结果:WA
  • 用时:27ms
  • 内存:3656kb
  • [2024-11-12 23:18:35]
  • 提交

answer

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

using ll = long long;
const int INF = 0x3f3f3f3f;
ll two[100], five[100];
void init(){
    two[0] = five[0] = 1;
    for(int i = 1; i < 32 && two[i-1] < 1e18; i++)
        two[i] = two[i-1]*2;
    for(int i = 1; i < 32 && five[i-1] < 1e18; i++)
        five[i] = five[i-1]*5;
}
ll sub(ll x){
    while(x%2 == 0) x /= 2;
    while(x%5 == 0) x /= 5;
    return x;
}
ll exgcd(ll a, ll b, ll &x, ll &y){
    if(!b){
        x = 1; y = 0;
        return a;
    }
    ll d = exgcd(b, a%b, x, y), t = x;
    x = y;
    y = t-a/b*y;
    return d;
}
int main(){
    ios :: sync_with_stdio(false);
    init();
    int T; cin >> T;
    while(T--){
        ll a, b, w, minc = INF, ans_d, ans_k;
        cin >> a >> b;
        w = sub(b);
        for(int i = 0; i < 32 && w*two[i] <= 1e9; i++){
            for(int j = 0; j < 32 && w*two[i]*five[j] <= 1e9; j++){
                // w^2 * k - b * c = a*d;
                ll d = w*two[i]*five[j], k, c;
                exgcd(w*w, b, k, c);
                ll t = max(-(a*d*k)/b, (a*d*c+w*w-1)/(w*w));
                c = -a*d*c/w+w*t;
                k = a*d*k/w+b*t/w;
                // cout << c << " " << t << endl;
                if(c < minc) minc = c, ans_d = d, ans_k = k;
            }
        }
        cout << minc << " " << ans_d << endl;
    }
    return 0;
}

詳細信息

Test #1:

score: 100
Accepted
time: 0ms
memory: 3648kb

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: 27ms
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 828125000
4 15
1 7
1 231680000
23 960937500
1 36096000
5 326
1 63360
0 1
1 61000
0 1
1 4880
44 10750
38 18500
1 11714560
1 331250
1 898437500
1 31
4 15
1 289600000
1 455000
1 115000000
1 1265625
0 1
20 1484375
0 1
1 415
1 235937500
1 765000000
30 181250
1 2968750
1 4406250
3 775
4 3
3 347500
1...

result:

wrong answer Jury found better answer than participant's 1 < 4 (Testcase 3)