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QOJ
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 |
---|---|---|---|---|---|---|---|---|---|
#789539 | #9622. 有限小数 | Texcavator# | WA | 20ms | 3528kb | C++23 | 1.7kb | 2024-11-27 20:46:01 | 2024-11-27 20:46:05 |
Judging History
answer
#include<iostream>
#include<vector>
#include<cmath>
#define int long long
int a,b;
std::vector<std::pair<int,int> > bm;
std::vector<int> bm2;
int ans=0;
void dfs(int now=0,int mul=1)
{
if(now==bm.size())
{
bm2.push_back(mul);
return ;
}
for(int i=0;i<=bm[now].second;i++)
{
dfs(now+1,mul);
mul*=bm[now].first;
}
}
int ml[2]={2,5};
void dfs2(int c,int now=0,int mul=1)
{
if(ans!=0) return ;
if(now==2)
{
for(int i=0;i<bm2.size();i++)
{
if((c*bm2[i]+a*mul)%b==0)
{
if(b*mul/bm2[i]<=1000000000)
{
ans=b*mul/bm2[i];
return ;
}
}
}
return ;
}
while(mul<=1000000000)
{
dfs2(c,now+1,mul);
if(ans!=0) return ;
mul*=ml[now];
}
}
signed solve()
{
bm.clear();
bm2.clear();
ans=0;
std::cin>>a>>b;
int x=b;
for(int i=2;i<=sqrt(x);i++)
{
if(x%i==0) bm.push_back({i,0});
while(x%i==0)
{
bm[bm.size()-1].second++;
x/=i;
}
}
if(x!=1) bm.push_back({x,1});
for(int i=0;i<bm.size();i++)
if(bm[i].first!=2&&bm[i].first!=5)
{
goto label;
}
std::cout<<"0 1\n";
return 0;
label:dfs();
for(int c=1;c<=b;c++)
{
dfs2(c);
if(ans!=0)
{
std::cout<<c<<' '<<ans<<'\n';
return 0;
}
}
return 0;
}
signed main()
{
int T;
std::cin>>T;
while(T--)
{
solve();
}
}
详细
Test #1:
score: 100
Accepted
time: 0ms
memory: 3528kb
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: 20ms
memory: 3524kb
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 12000 3 ...
result:
wrong answer Jury found better answer than participant's 1 < 2 (Testcase 321)