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QOJ
ID | 题目 | 提交者 | 结果 | 用时 | 内存 | 语言 | 文件大小 | 提交时间 | 测评时间 |
---|---|---|---|---|---|---|---|---|---|
#748227 | #9622. 有限小数 | mapleKing | WA | 55ms | 3620kb | C++20 | 1.3kb | 2024-11-14 19:46:16 | 2024-11-14 19:46:17 |
Judging History
answer
#include <bits/stdc++.h>
#pragma GCC optimize(2)
// using namespace std;
using i64 = long long;
using u32 = unsigned int;
using u64 = unsigned long long;
i64 exgcd(i64 a, i64 b, i64& x, i64& y) {
if (b == 0) {
x = 1, y = 0;
return a;
}
i64 s = exgcd(b, a % b, y, x);
y -= a / b * x;
return s;
}
void solve() {
i64 a, b;
std::cin >> a >> b;
i64 b2 = b;
while(b2 % 2 == 0){
b2 /= 2;
}
while(b2 % 5 == 0){
b2 /= 5;
}
i64 b3 = b / b2;
std::vector<i64> v;
for(i64 i = 1; i <= 1e9; i *= 2){
for(i64 j = i; j <= 1e9; j *= 5){
if (b2 * j <= 1e9){
v.push_back(j);
}
}
}
i64 ans1 = 1e9, ans2 = 1e9;
for(auto x : v){
i64 c = a * x % b2;
c = (b2 - c) % b2;
i64 d = x * b2 * b3;
i64 g = std::gcd(c, d);
c /= g, d /= g;
if (c < ans1){
ans1 = c;
ans2 = d;
}
}
std::cout << ans1 << " " << ans2 << "\n";
}
int main() {
std::ios::sync_with_stdio(false);
std::cin.tie(nullptr);
// std::cout << std::fixed << std::setprecision(10); // 固定输出精度
int t = 1;
std::cin >> t;
while (t--) {
solve();
}
return 0;
}
詳細信息
Test #1:
score: 100
Accepted
time: 0ms
memory: 3620kb
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: 55ms
memory: 3544kb
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 960937500 1 36096000 5 326 1 63360 0 1 1 61000 0 1 1 4880 1 10750 1 18500 1 11714560 1 331250 1 898437500 1 31 1 6 1 289600000 1 455000 1 115000000 1 1265625 0 1 1 1484375 0 1 1 415 1 235937500 1 765000000 1 181250 1 2968750 1 4406250 3 775 1 48 3 347500 1 94...
result:
wrong answer Integer 1437500000 violates the range [1, 10^9]