QOJ.ac
QOJ
ID | Problem | Submitter | Result | Time | Memory | Language | File size | Submit time | Judge time |
---|---|---|---|---|---|---|---|---|---|
#787950 | #9622. 有限小数 | laonongmin | WA | 16ms | 3584kb | C++20 | 1.4kb | 2024-11-27 15:21:25 | 2024-11-27 15:21:26 |
Judging History
answer
#pragma GCC optimize(3)
#include <bits/stdc++.h>
#define ll long long
#define pii pair<int,int>
#define pll pair<ll,ll>
#define N 1000005
#define MOD 998244353
#define INF 1000000000LL
#define IINF 10000000000000000LL
using namespace std;
ll p2[40], p5[40];
void solve()
{
ll a,b; cin>>a>>b;
ll mx = 0;
pll ans = {0,1};
ll k = b;
while(k%2==0) k/=2;
while(k%5==0) k/=5;
if(k==0) {cout<<"0 1\n"; return;}
// cout<<k<<'\n';
for(int x=0;x<=30 && p2[x]*a <= IINF ;++x)
{
for(int y=0;p2[x]*p5[y]*a <= IINF && p2[x]*p5[y]*b <= IINF && y<=30;++y)
{
// if(x==1 && y==0) {cout<<p2[x]*p5[y]*a<<mx<<'\n';}
if(p2[x]*p5[y]*a % k > mx && p2[x]*p5[y]*b <= INF)
{
// if(x==1 && y==0) {cout<<"XXX";}
// cout<<x<<' '<<y<<' '<<mx<<'\n';
mx = p2[x]*p5[y]*a % k;
ans = {k-mx, p2[x]*p5[y]*b};
}
}
}
ll d = __gcd(ans.first, ans.second);
ans.first /= d; ans.second /= d;
cout<<ans.first<<' '<<ans.second<<'\n';
}
int main()
{
ios::sync_with_stdio(false);
cin.tie(0);
int T;
cin>>T;
p2[0]=p5[0]=1;
for(int i=1;i<=35;++i)
{
p2[i] = p2[i-1]*2;
p5[i] = p5[i-1]*5;
}
while(T--)
{
solve();
}
return 0;
}
Details
Tip: Click on the bar to expand more detailed information
Test #1:
score: 100
Accepted
time: 0ms
memory: 3568kb
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: 16ms
memory: 3584kb
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 1 480 3 34...
result:
wrong answer Jury found better answer than participant's 2 < 3 (Testcase 391)