QOJ.ac
QOJ
ID | Problem | Submitter | Result | Time | Memory | Language | File size | Submit time | Judge time |
---|---|---|---|---|---|---|---|---|---|
#737562 | #9622. 有限小数 | nekohshizuku | WA | 6ms | 67788kb | C++20 | 3.0kb | 2024-11-12 16:13:44 | 2024-11-12 16:13:45 |
Judging History
answer
#include<iostream>
#include<string>
#include<cmath>
#include<algorithm>
#include<iomanip>
#include<stack>
#include<unordered_map>
#include<map>
#include<set>
#include<cstring>
#include<vector>
#include<numeric>
#include<queue>
#define Arr arr
#define null NULL
#define Endl endl
#define db double
#define pll pair<ll,ll>
#define vpll vector<pair<ll,ll> >
#define vll vector<ll>
#define vvpll vector<vector<pair<ll,ll> > >
#define vvll vector<vector<ll> >
#define privll priority_queue<ll, vector<ll> ,greater<ll> >
#define privpll priority_queue<pair<ll, ll>, vector<pair<ll,ll> > ,greater<pair<ll,ll> > >
#define ll long long
#define amonglr(x,l,r) x >= l && x <= r
#define rep(i,s,n) for(ll i = (s);i <= (n);i++)
#define per(i,s,n) for(ll i = (s);i >= (n);i--)
using namespace std;
const ll N = 2e6 + 10;
ll mod = 1e9 + 7, inf = 1e17;
string str, stt, stl[N];
ll m, t, k, n, num[N], arr[N];
ll qpow(ll a, ll b) {
ll res = 1;
while (b) {
if (b & 1) res = res * a;
a = a * a;
b >>= 1;
}
return res;
}
ll gcd(ll a, ll b) {
return !b ? a : gcd(b, a % b);
}
void exgcd(int a, int b,ll &x,ll &y)
{
if (b == 0)
{
x = 1, y = 0;
return;
}
exgcd(b, a % b, y, x);
y -= (a / b) * x;
}
void solve() {
ll a, b;
cin >> a >> b;
ll temp = b, ans = 1e12, ans1 = 1e12, cnt2{}, cnt5{};
while (temp % 2 == 0) {
temp /= 2;
cnt2++;
}
while (temp % 5 == 0) {
temp /= 5;
cnt5++;
}
if (temp == 1) {
cout << 0 << " " << 1 << Endl;
return;
}
ll q1 = 1, q2 = 1;
for (int i = 0;; i++) {
ll d = q1 * temp;
q1 *= 2;
if (i > cnt2) q2 = q2 * 2;
ll q5 = 1;
if (d > 1e9) break;
for (int j = 0;; j++) {
if (j) d *= 5;
if (j > cnt5) q5 *= 5;
if (d > 1e9) break;
ll aa = a * q2 * q5;
ll res = aa / temp * temp + temp - aa;
ll res1 = 1;
if (q2 == 1) {
res1 = res1 * qpow(2, cnt2 - i);
}
if (q5 == 1) {
res1 = res * qpow(5, cnt5 - j);
}
if (res1 == 1) {
if (ans > res) {
ans = res;
ans1 = d;
}
}
else {
ll temp1 = res;
temp1 %= res1;
temp1 = res1 - temp1;
ll x, y;
exgcd(temp, res1, x, y);
k = (x % res1 + res1) % res1 * temp1 % res1;
res = (res + k * temp) / res1;
if (ans > res) {
ans = res;
ans1 = d;
}
}
}
}
cout << ans << " " << ans1 << endl;
}
int main() {
ios::sync_with_stdio(0);
cin.tie(0); cout.tie(0);
t = 1;
cin >> t;
while (t--) solve();
return 0;
}
Details
Tip: Click on the bar to expand more detailed information
Test #1:
score: 0
Wrong Answer
time: 6ms
memory: 67788kb
input:
4 1 2 2 3 3 7 19 79
output:
0 1 1 3 1 7 1 79
result:
wrong answer The result is not terminating.(Testcase 3)