QOJ.ac
QOJ
ID | Problem | Submitter | Result | Time | Memory | Language | File size | Submit time | Judge time |
---|---|---|---|---|---|---|---|---|---|
#769751 | #9622. 有限小数 | 333zhan# | WA | 254ms | 3728kb | C++20 | 1.2kb | 2024-11-21 19:16:10 | 2024-11-21 19:16:10 |
Judging History
answer
#include <bits/stdc++.h>
#define int long long
using namespace std;
constexpr int inf = 1E9;
vector <int> f;
set <int> st;
void solve () {
int a, b;
cin >> a >> b;
if (a == b || st.find (b) != st.end ()) {
cout << 0 << " " << 1 << '\n';
return;
}
int C = -1, D;
for (auto x : f) {
auto check = [&] (int t) {
return a * x <= b * t;
};
int l = 1, r = inf;
while (l < r) {
int mid = (l + r) / 2;
if (check (mid)) {
r = mid;
} else {
l = mid + 1;
}
}
int c = l * b - a * x;
int d = x * b;
int gc = gcd (c, d);
c /= gc;
d /= gc;
if (C == -1 || C > c) {
C = c;
D = d;
}
}
cout << C << " " << D << '\n';
}
signed main () {
ios::sync_with_stdio (false);
cin.tie (nullptr);
for (int i = 1; i <= inf; i *= 2) {
for (int j = i; j <= inf; j *= 5) {
f.push_back (j);
st.insert (j);
}
}
int T = 1;
cin >> T;
while (T --) {
solve ();
}
return 0;
}
Details
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Test #1:
score: 100
Accepted
time: 1ms
memory: 3728kb
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: 254ms
memory: 3696kb
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 828125000 1 60 1 7 1 231680000 23 60058593750 1 2203125000 3 2086400000 1 63360 0 1 1 61000 0 1 1 59570312500 1 10750 1 18500 1 1117187500 1 331250 1 11230468750 1 31 1 6 1 289600000 1 455000 1 17968750000 1 1265625 0 1 1 1484375 0 1 1 415 1 235937500 1 765000000 1 181250 1 2968750 1 4406250 ...
result:
wrong answer Integer 60058593750 violates the range [1, 10^9]