QOJ.ac

QOJ

IDProblemSubmitterResultTimeMemoryLanguageFile sizeSubmit timeJudge time
#788208#9622. 有限小数EvanWA 357ms4076kbC++231.2kb2024-11-27 16:13:382024-11-27 16:13:40

Judging History

你现在查看的是最新测评结果

  • [2024-11-27 16:13:40]
  • 评测
  • 测评结果:WA
  • 用时:357ms
  • 内存:4076kb
  • [2024-11-27 16:13:38]
  • 提交

answer

#include<bits/stdc++.h>
using namespace std;
#define int long long
#define gcd __gcd
const int maxd=1E9;
void solve()
{
    int a,b,c=1E18,d=0;
    scanf("%lld %lld",&a,&b);
    int k=b;
    while(k%2==0){k=k/2;}
    while(k%5==0){k=k/5;}
    if(k==1)
    {
        printf("0 1\n");return;
    }
    map<int,int> mp;
    priority_queue<int,vector<int>,greater<int>> pq;
    mp[k]=1;
    pq.push(k);
    while(!pq.empty())
    {
        int x=pq.top();pq.pop();
        if(5*x<=maxd&&!mp[5*x])
        {
            mp[5*x]=1;
            pq.push(5*x);
        }
        if(2*x<=maxd&&!mp[2*x])
        {
            mp[2*x]=1;
            pq.push(2*x);
        }
        int l=0,r=1E18/k;
        int y=a*x/b;
        while(l<r)
        {
            int mid=(l+r)/2;
            if(mid*k<y){l=mid+1;}
            else{r=mid;}
        }
        while(l*k>=y){l--;}
        while(l*k<y){l++;}
        
        int o=l*k-y;
        int m=gcd(o,x);
        o=o/m;x=x/m;
        if(o<c){c=o;d=x;}
    }
    printf("%lld %lld\n",c,d);
}

signed main()
{
    int tt;
    scanf("%lld",&tt);
    while(tt--)
    {
        solve();
    }
}

Details

Tip: Click on the bar to expand more detailed information

Test #1:

score: 100
Accepted
time: 1ms
memory: 4076kb

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: 357ms
memory: 3788kb

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:

0 1
1 54272
0 1
0 1
1 231680000
23 3936
1 36096000
5 326
1 63360
0 1
1 31232
0 1
1 4880
1 5375
1 18500
1 11714560
1 331250
1 2944
1 31
0 1
1 289600000
1 455000
1 58880
1 51840
0 1
0 1
0 1
1 415
1 19328000
1 765000000
1 4640
1 608
1 72192
3 775
0 1
3 347500
1 944
1 43600
0 1
1 430000
1 6336
1 29184
1...

result:

wrong answer The result is not terminating.(Testcase 1)