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QOJ
ID | Problem | Submitter | Result | Time | Memory | Language | File size | Submit time | Judge time |
---|---|---|---|---|---|---|---|---|---|
#737939 | #9622. 有限小数 | Williamtym | WA | 3ms | 3632kb | C++20 | 1.5kb | 2024-11-12 17:12:40 | 2024-11-12 17:12:40 |
Judging History
answer
#include<iostream>
#include<algorithm>
#include<cstring>
#include<cstdio>
#include<set>
using namespace std;
typedef long long LL;
typedef pair<LL, LL> PII;
LL read()
{
LL x = 0, f = 1;
char ch = getchar();
while(ch < '0' || ch > '9')
{
if(ch == '-') f = -1;
ch = getchar();
}
while(ch >= '0' && ch <= '9')
{
x = x * 10 + ch - '0';
ch = getchar();
}
return x * f;
}
void write(LL x)
{
if(x < 0)
{
putchar('-');
x = -x;
}
if(x > 9)
write(x / 10);
putchar(x % 10 + '0');
}
set<LL> s;
void init()
{
for(int i = 1;i <= 1e6; i *= 2)
for(int j = i;j <= 1e6; j *= 5)
s.insert(j);
}
LL exgcd(LL a, LL b, LL &x, LL &y)
{
if(!b)
{
x = 1, y = 0;
return a;
}
LL d = exgcd(b, a % b, x, y);
LL t = x;
x = y;
y = t - a / b * x;
return d;
}
void solve()
{
LL a = read(), b = read();
if(s.count(b))
{
cout << 0 << ' ' << 1 << endl;
return;
}
LL minv = 1e9;
LL u, v;
for(auto i : s)
{
u = (b - a * i % b + b) % b;
if(minv > u)
{
minv = u;
v = b * i;
}
}
cout << minv / __gcd(minv, v) << ' ' << v / __gcd(minv, v) << endl;
}
int main()
{
init();
LL T = read();
while(T --)
{
solve();
}
return 0;
}
Details
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Test #1:
score: 100
Accepted
time: 0ms
memory: 3632kb
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: 3ms
memory: 3572kb
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 60 3 560 7 90500 23 3936 1 36096000 5 326 1 63360 0 1 1 31232 0 1 1 4880 1 10750 1 18500 1 11714560 1 331250 1 2944 1 31 1 6 7 113125 1 455000 1 58880 1 51840 0 1 1 304 0 1 1 415 1 19328000 5 156672 1 181250 1 608 1 72192 3 24800 1 12000 3 347500 1 944 1 43600 3 19000 1 430000 1 6336 ...
result:
wrong answer Jury found better answer than participant's 1 < 3 (Testcase 4)