QOJ.ac
QOJ
ID | Problem | Submitter | Result | Time | Memory | Language | File size | Submit time | Judge time |
---|---|---|---|---|---|---|---|---|---|
#740274 | #9622. 有限小数 | Komorebie | WA | 22ms | 3824kb | C++17 | 1.1kb | 2024-11-13 08:17:09 | 2024-11-13 08:17:09 |
Judging History
answer
#include <bits/stdc++.h>
using namespace std;
using ll = long long;
vector<ll>p;
unordered_map<ll, bool>f;
ll T;
bool check(ll x)
{
while(x%2==0)x/=2;
while(x%5==0)x/=5;
return x==1;
}
void solve()
{
ll a, b, c, ans = LLONG_MAX, max_z, max_y;
cin>>a>>b;
if(check(b))
{
cout<<0<<" "<<1<<endl;
return;
}
for(int i = 0;i<p.size();i++)
{
ll y = p[i];
ll z = y*a/b + 1;
c = z*b - y*a;
if(c<ans)
{
ans = c;
max_z = z;
max_y = y;
}
}
ll L1 = max_z*b - max_y*a, L2 = max_y*b;
ll d = max_y*b/__gcd(L1, L2);
ll t = __gcd(ans, d);
cout<<ans/t<<" "<<d/t<<endl;
}
void dfs(ll x)
{
if(x<=1e15)
if(!f[x]){
f[x] = 1;
p.push_back(x);
dfs(2*x);
dfs(5*x);
}
}
int main()
{
ios::sync_with_stdio(false), cin.tie(nullptr);
int tt;
cin>>tt;
dfs(1);
while(tt--)
{
solve();
}
return 0;
}
Details
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Test #1:
score: 100
Accepted
time: 1ms
memory: 3824kb
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: 22ms
memory: 3528kb
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 54272 1 6 3 560 1 19434727014400000 23 3936 1 378493992960 1 17091788800000000 1 6803228196864000 0 1 1 31232 0 1 1 4093640704 1 10750 1 451660156250 1 122836064665600000 1 14227079168 1 2944 1 31 1 6 1 24293408768000000 1 31267361914880000 1 505775348776960 1 86973087744 0 1 1 152 0 1 1 1114...
result:
wrong answer Jury found better answer than participant's 1 < 3 (Testcase 4)