86 lines
1.6 KiB
C++
86 lines
1.6 KiB
C++
#include<cstdio>
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#include<algorithm>
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#include<map>
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#include<cstring>
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#include<vector>
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#include<cmath>
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#include<string>
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#define N 2000010
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#define M 1000
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using namespace std;
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double n;
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long long a,b,z,pp,qq,ans[N],P,p,q,o,k,tot,i,j,l;
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long long gcd(long long a,long long b)
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{
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if (b==0) return a;
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return gcd(b,a%b);
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}
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int check(long long p,long long q)
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{
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if (p==0) return 0;
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if (p>=P) return 0;
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long long a,b,c=1,pp;
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a=p%10;
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pp=p;
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while (pp)
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{
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b=pp%10;
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pp=pp/10;
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c=c*10;
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}
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c=c/10;
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p=p-a+b-b*c+a*c;
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if (p==q) return 1;return 0;
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}
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int main()
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{
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int test,ii;
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P=1000000;
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P=P*10000;
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scanf("%d",&test);
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for (ii=1;ii<=test;ii++)
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{
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tot=0;
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scanf("%lf",&n);
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p=(n+0.0000005)*1000000;
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q=p/gcd(p,1000000);
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p=1000000/gcd(p,1000000);
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o=abs(p-q);
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b=10;a=0;
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for (k=0;k<=8;k++)
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{
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for (i=0;i<=9;i++)
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for (j=0;j<=9;j++)
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{
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z=b*i+a*10+j;
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if (z%o==0)
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{
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z=z/o;
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pp=p*z;qq=q*z;
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if (check(pp,qq))
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{
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tot++;
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ans[tot]=pp;
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}
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}
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}
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a=a*10+9;
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b=b*10;
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}
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sort(ans+1,ans+1+tot);
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j=0;ans[0]=-1;
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for (i=1;i<=tot;i++)
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if (ans[i]!=ans[i-1])
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{
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j++;ans[j]=ans[i];
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}
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tot=j;
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printf("Case #%d:\n",ii);
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printf("%I64d\n",tot);
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for (i=1;i<=tot-1;i++)
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printf("%I64d ",ans[i]);
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if (tot)
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printf("%I64d\n",ans[tot]);
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}
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}
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