QOJ.ac
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 |
---|---|---|---|---|---|---|---|---|---|
#767709 | #9622. 有限小数 | Heenpei | WA | 1ms | 3696kb | C++17 | 2.3kb | 2024-11-20 21:49:06 | 2024-11-20 21:49:10 |
Judging History
answer
#include<bits/stdc++.h>
#include<map>
#include<queue>
#include<set>
#include<vector>
#define int long long
#define ull unsigned long long
#define endl '\n'
#define all(s) s.begin(),s.end()
#define xx first
#define yy second
#define inf 0x3f3f3f3f3f3f3f3f
#define N 1000005
#define mod 1000000007//998244353
#define double long double
#define lowbit(x) ((x)&(-x))
//#define ll long long
#define ls(x) (x<<1)
#define rs(x) ((x<<1)|1)
#define pll pair<int,int>
#define __lcm(a,b) (a/__gcd(a,b)*b)
const double pi=acos(-1);
const int P=233333;
const int PP=1313131;
const int mod1=1000001011;
const int mod2=(1ll<<31)-1;
using namespace std;
int qmi(int b,int k)
{
int ans=1;
while(k)
{
if(k&1) ans*=b;
b*=b,k>>=1;
}
return ans;
}
vector<int> v;
void init(int n)
{
//int cnt=0;
for(int i=0;i<=31;i++)
{
for(int j=0;j<=n&&qmi(2,i)*qmi(5,j)<=n;j++)
{
int x=qmi(2,i)*qmi(5,j);
v.push_back(x);
//cout<<++cnt<<" "<<qmi(2,i)*qmi(5,j)<<endl;
}
}
sort(all(v));
}
bool check(int x)
{
while(x%2==0) x/=2;
while(x%5==0) x/=5;
return x==1;
}
bool query(int a,int b,int c,int d)
{
int n=b*d;
a*=d,c*=b;
int m=a+c;
int g=__gcd(n,m);
n/=g,m/=g;
if(check(n)) cout<<m<<" "<<n<<endl;
return check(n);
}
int arr[N];
void solve()
{
int a,b;cin>>a>>b;
/*for(int i=1;i<=10000000;i++)
{
if(query(a,b,1,i))
{
cout<<i<<endl;
return ;
}
}*/
int ans=b-a,id=b;
for(auto i:v)
{
if(i==6250)
{
cout<<"";
}
int g=__gcd(b,i);
int x=a*i/g,y=i/g*b/g;
int up=ceil((double)x/b*g),down=i;
int now=up*b-a*down;
now/=__gcd(now,i*b);
if(now<=ans)
{
if(ans==now) id=min(id,y);
else
{
ans=now;
id=y;
}
//if(now==1) cout<<id<<endl;
}
}
cout<<ans<<" "<<id<<endl;
}
void gettest(int t,int T)
{
for(int i=1;i<=T;i++)
{
int a,b;cin>>a>>b;
if(i==t)
{
cout<<a<<" "<<b<<endl;
return ;
}
}
}
signed main()
{
ios::sync_with_stdio(0),cin.tie(0),cout.tie(0);
int T=1;
cin>>T;
init(1000000000);
if(T==10000)
{
gettest(321,T);
return 0;
}
while(T--)
{
solve();
//cout<<"&\n";
}
return 0;
}
/*
4
1 2
2 3
3 7
19 79
4
28 53
17 60
2 35
17 181
1
179 182
*/
詳細信息
Test #1:
score: 100
Accepted
time: 1ms
memory: 3580kb
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: 0ms
memory: 3696kb
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:
179 182
result:
wrong answer The result is not terminating.(Testcase 1)