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QOJ
ID | Problem | Submitter | Result | Time | Memory | Language | File size | Submit time | Judge time |
---|---|---|---|---|---|---|---|---|---|
#742205 | #9622. 有限小数 | F0giveners | WA | 7ms | 3668kb | C++20 | 2.2kb | 2024-11-13 16:04:42 | 2024-11-13 16:04:42 |
Judging History
answer
#include <bits/stdc++.h>
using namespace std;
using ui = unsigned int;
using ull = unsigned long long;
using ll = long long;
#define endl '\n'
using pii = pair<int, int>;
using pll = pair<ll, ll>;
const int maxn = 2e5 + 10;
const int mod = 1000000007;
#define inl inline
#define fr(i, a, b) for (int i = a; i <= b; i++)
#define ford(i, a, b) for (int i = a; i >= b; i--)
#define forall(i, a) for (auto &i : a)
/**
____ ___ _____
/ ___| _ _ / _ \___ /
\___ \| | | | | | ||_ \
___) | |_| | |_| |__) |
|____/ \__, |\___/____/
|___/
*/
istream &operator>>(istream &in, vector<int> &v)
{
for (auto &i : v)
in >> i;
return in;
}
ostream &operator<<(ostream &out, vector<int> &v)
{
for (auto &i : v)
out << i << " ";
return out;
}
bool _output = 1;
#define int ll
int exgcd(int &x, int &y, int a, int b)
{
if (b == 0)
{
x = 1, y = 0;
return a;
}
int d = exgcd(x, y, b, a % b);
int z = x;
x = y;
y = z - a / b * y;
return d;
}
void solve()
{
int a, b;
cin >> a >> b;
int p = 1;
while (b % 2 == 0)
b /= 2, p *= 2;
while (b % 5 == 0)
b /= 5, p *= 5;
// cout << p << endl;
if (b == 1)
{
cout << "0 1" << endl;
return;
}
// b = b / p;
int x, y;
int g = gcd(b, p);
exgcd(x, y, b, p);
// bx+py = gcd(b,p) ;
// cout << gcd(b, p) << endl;
y = y / g * a;
a = y;
pll ans = {1e18, 1e18};
for (int t1 = 1; t1 * b <= 1e9; t1 *= 2)
{
for (int t2 = 1; t1 * t2 * b <= 1e9; t2 *= 5)
{
int q = t1 * t2;
int c = (((q * a) + b - 1) / b) * b - q * a;
int d = q * b;
if (c < ans.first)
{
ans = {c, d};
}
}
}
// cout << (1876 % 7 == 0) << endl;
cout << ans.first << " " << ans.second << endl;
}
signed main()
{
ios::sync_with_stdio(false);
cin.tie(0);
cout.tie(0);
int _ = 1;
if (_output)
cin >> _;
while (_--)
solve();
return 0;
}
Details
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Test #1:
score: 100
Accepted
time: 0ms
memory: 3668kb
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: 7ms
memory: 3648kb
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 3 1 828125000 2 3 1 7 1 231680000 23 960937500 1 36096000 5 326 1 63360 0 1 1 61000 0 1 1 4880 42 344 36 2890625 1 11714560 1 331250 1 898437500 1 31 2 3 1 289600000 1 455000 1 115000000 1 1265625 0 1 18 4750 0 1 1 415 1 235937500 1 765000000 28 29000 1 2968750 1 4406250 3 775 2 15 3 347500 1 944 ...
result:
wrong answer Jury found better answer than participant's 1 < 2 (Testcase 3)