QOJ.ac
QOJ
ID | Problem | Submitter | Result | Time | Memory | Language | File size | Submit time | Judge time |
---|---|---|---|---|---|---|---|---|---|
#581701 | #9381. 502 Bad Gateway | False0099 | WA | 0ms | 3604kb | C++20 | 3.7kb | 2024-09-22 13:56:43 | 2024-09-22 13:56:43 |
Judging History
answer
#include <bits/stdc++.h>
#define int long long
#define endl '\n'
int INF = 0x3f3f3f3f3f3f3f3f;
using namespace std;
typedef pair<int, int> PII;
void init() {
// 初始化代码
}
template<class T>
struct Frac {
T num;
T den;
Frac(T num_, T den_) : num(num_), den(den_) {
if (den < 0) {
den = -den;
num = -num;
}
}
void Norm() {
T g = __gcd(num, den);
num /= g, den /= g;
}
Frac() : Frac(0, 1) {}
Frac(T num_) : Frac(num_, 1) {}
explicit operator double() const {
return 1. * num / den;
}
Frac& operator+=(const Frac& rhs) {
num = num * rhs.den + rhs.num * den;
den *= rhs.den;
Norm();
return *this;
}
Frac& operator-=(const Frac& rhs) {
num = num * rhs.den - rhs.num * den;
den *= rhs.den;
Norm();
return *this;
}
Frac& operator*=(const Frac& rhs) {
num *= rhs.num;
den *= rhs.den;
Norm();
return *this;
}
Frac& operator/=(const Frac& rhs) {
num *= rhs.den;
den *= rhs.num;
Norm();
if (den < 0) {
num = -num;
den = -den;
}
return *this;
}
friend Frac operator+(Frac lhs, const Frac& rhs) {
return lhs += rhs;
}
friend Frac operator-(Frac lhs, const Frac& rhs) {
return lhs -= rhs;
}
friend Frac operator*(Frac lhs, const Frac& rhs) {
return lhs *= rhs;
}
friend Frac operator/(Frac lhs, const Frac& rhs) {
return lhs /= rhs;
}
friend Frac operator-(const Frac& a) {
return Frac(-a.num, a.den);
}
friend bool operator==(const Frac& lhs, const Frac& rhs) {
return lhs.num * rhs.den == rhs.num * lhs.den;
}
friend bool operator!=(const Frac& lhs, const Frac& rhs) {
return lhs.num * rhs.den != rhs.num * lhs.den;
}
friend bool operator<(const Frac& lhs, const Frac& rhs) {
return lhs.num * rhs.den < rhs.num * lhs.den;
}
friend bool operator>(const Frac& lhs, const Frac& rhs) {
return lhs.num * rhs.den > rhs.num * lhs.den;
}
friend bool operator<=(const Frac& lhs, const Frac& rhs) {
return lhs.num * rhs.den <= rhs.num * lhs.den;
}
friend bool operator>=(const Frac& lhs, const Frac& rhs) {
return lhs.num * rhs.den >= rhs.num * lhs.den;
}
friend std::ostream& operator<<(std::ostream& os, Frac x) {
T g = __gcd(x.num, x.den);
if (x.den < 0) {
x.den = -x.den;
x.num = -x.num;
}
if (x.den == g) {
return os << x.num / g<<" "<<x.den/g;
} else {
return os << x.num / g << " " << x.den / g;
}
}
};
void solve() {
int _;
cin >> _;
Frac<int> n(_);
// 计算 sqrt(2 * n) 并转换为 Frac<int> 类型
double sqrt_val = sqrt(2.0 * (double)n);
Frac<int> t(static_cast<int>(sqrt_val), 1);
Frac<int> ans(INF, 1);
auto calc = [&](Frac<int> mid) {
return mid / 2 + Frac<int>(n) / mid ;
};
for (int dx = 0; dx <= 5; dx++) {
Frac<int> candidate = t + Frac<int>(dx);
if (candidate >= 1 && candidate <= n) {
ans = min(ans, calc(candidate));
}
candidate = t - Frac<int>(dx);
if (candidate >= 1 && candidate <= n) {
ans = min(ans, calc(candidate));
}
}
cout << ans << endl;
}
signed main() {
ios::sync_with_stdio(false), cin.tie(0);
int t;
t = 1;
cin >> t;
init();
while (t--) {
solve();
}
}
Details
Tip: Click on the bar to expand more detailed information
Test #1:
score: 0
Wrong Answer
time: 0ms
memory: 3604kb
input:
3 1 2 3
output:
3 2 2 1 5 2
result:
wrong answer 1st lines differ - expected: '1 1', found: '3 2'