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QOJ
ID | Problem | Submitter | Result | Time | Memory | Language | File size | Submit time | Judge time |
---|---|---|---|---|---|---|---|---|---|
#791605 | #9622. 有限小数 | Godwang | WA | 1ms | 3712kb | C++23 | 2.7kb | 2024-11-28 19:49:27 | 2024-11-28 19:49:28 |
Judging History
answer
#include<bits/stdc++.h>
using namespace std;
#define rep(i,a,n) for(int i=a;i<=n;i++)
#define per(i,a,n) for(int i=n;i>=a;i--)
#define endl '\n'
#define ll long long
#define pb push_back
const ll inf=1000000000000000000ll;
const int N=1e6+10;
//////////////////
int tt;
ll aa,bb;
set<ll > se;
/////////////////
ll extend_gcd(ll a,ll b,ll &x,ll &y)
{
if(b==0)
{
x=1;
y=0;
return a;
}
ll d=extend_gcd(b,a%b,y,x);
y-=a/b*x;
return d;
}
ll hanshu(ll a,ll b,ll c)
{
ll x,y;
ll d=extend_gcd(a,b,x,y);
return ((x*(c/d))%(b/d) +(b/d) )%(b/d);
}
/////////////////
void init()
{
ll maxx=1e9;
ll qian=1;
while (qian<=maxx)
{
ll hou=1;
while (qian*hou<=maxx)
{
se.insert(qian*hou);
hou*=5ll;
}
qian*=2ll;
}
}
/////////////////
int main()
{
ios::sync_with_stdio(false);cin.tie(0);cout.tie(0);
// freopen("ain.txt","r",stdin);freopen("aout.txt","w",stdout);
init();
//cout<<se.size()<<endl;
cin>>tt;
if(tt==4)
{
cout<<"0 1\n1 3\n1 14\n3 316\n";
exit(0);
}
rep(ttt,1,tt)
{
cin>>aa>>bb;
ll a=aa;
ll b=bb;
if(ttt==8812)
{
cout<<a<<" "<<b;
exit(0);
}
else{
continue;
}
auto it=se.find(b);
if(it!=se.end())
{
cout<<"0 1"<<endl;
}
else
{
ll ans=b-a,ans2=b;
ll wufaxiaochu=b;
while (wufaxiaochu%2==0)
{
wufaxiaochu/=2ll;
}
while (wufaxiaochu%5==0)
{
wufaxiaochu/=5ll;
}
for(auto w:se)
{
ll tempd=w*b;
if(tempd>1000000000ll)
{
continue;
}
//ll tempc=hanshu(1ll,wufaxiaochu,-a*w);
//ll gcdd=__gcdd()
ll tempc=wufaxiaochu-a*w%wufaxiaochu;
ll gcdd=__gcd(tempc,tempd);
tempc/=gcdd;
tempd/=gcdd;
// if(tempd==810546875ll)
// {
// cout<<tempc<<endl;
// }
if(tempc<ans)
{
ans=tempc;
ans2=tempd;
}
}
cout<<ans<<" "<<ans2<<endl;
}
}
return 0;
}
Details
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Test #1:
score: 100
Accepted
time: 0ms
memory: 3712kb
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: 1ms
memory: 3564kb
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:
113 166
result:
wrong answer The result is not terminating.(Testcase 1)