結果

問題 No.2790 Athena 3
ユーザー 遭難者
提出日時 2024-06-21 22:17:13
言語 C++23
(gcc 13.3.0 + boost 1.87.0)
結果
AC  
実行時間 2 ms / 2,000 ms
コード長 2,865 bytes
コンパイル時間 7,652 ms
コンパイル使用メモリ 348,380 KB
実行使用メモリ 6,944 KB
最終ジャッジ日時 2024-06-21 22:17:22
合計ジャッジ時間 8,911 ms
ジャッジサーバーID
（参考情報） 		judge5 / judge2
このコードへのチャレンジ
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ファイルパターン 結果
sample AC * 3
other AC * 14
権限があれば一括ダウンロードができます

ソースコード

diff #
プレゼンテーションモードにする

#pragma GCC target("avx2")
#pragma GCC optimize("Ofast,unroll-loops")
// #define _GLIBCXX_DEBUG
#include <bits/stdc++.h>
using namespace std;
#if __has_include(<atcoder/all>)
#include <atcoder/all>
using mint = atcoder::modint998244353;
istream &operator>>(istream &is, mint &a)
{
    long t;
    is >> t;
    a = t;
    return is;
}
ostream &operator<<(ostream &os, mint a)
{
    return os << a.val();
}
#endif
typedef long double ldouble;
#undef long
#define long long long
#define overload3(a, b, c, name, ...) name
#define rep1(n) for (long i = 0; i < n; i++)
#define rep2(i, n) for (long i = 0; i < n; i++)
#define rep3(i, a, b) for (long i = a; i < b; i++)
#define rep(...) overload3(__VA_ARGS__, rep3, rep2, rep1)(__VA_ARGS__)
#define per1(n) for (long i = n - 1; i >= 0; i--)
#define per2(i, n) for (long i = n - 1; i >= 0; i--)
#define per3(i, a, b) for (long i = b - 1; i >= (a); i--)
#define per(...) overload3(__VA_ARGS__, per3, per2, per1)(__VA_ARGS__)
#define ALL(a) a.begin(), a.end()
#define vec vector
template <typename T>
ostream &operator<<(ostream &os, vector<T> &a)
{
    const int n = a.size();
    rep(i, n)
    {
        os << a[i];
        if (i + 1 != n)
            os << " ";
    }
    return os;
}
template <typename T, size_t n>
ostream &operator<<(ostream &os, array<T, n> &a)
{
    rep(i, n)
    {
        os << a[i];
        if (i + 1 != n)
            os << " ";
    }
    return os;
}
template <typename T>
istream &operator>>(istream &is, vector<T> &a)
{
    for (T &i : a)
        is >> i;
    return is;
}
template <typename T, typename S>
bool chmin(T &x, S y)
{
    if (x > (T)y)
    {
        x = (T)y;
        return true;
    }
    return false;
}
template <typename T, typename S>
bool chmax(T &x, S y)
{
    if (x < (T)y)
    {
        x = (T)y;
        return true;
    }
    return false;
}
template <typename T>
void operator++(vector<T> &a)
{
    for (T &i : a)
        ++i;
}
template <typename T>
void operator--(vector<T> &a)
{
    for (T &i : a)
        --i;
}
template <typename T>
void operator++(vector<T> &a, int)
{
    for (T &i : a)
        i++;
}
template <typename T>
void operator--(vector<T> &a, int)
{
    for (T &i : a)
        i--;
}
#undef endl
#define endl '\n'
vec<pair<int, int>> c(int x, int y)
{
    vec<pair<int, int>> res;
    res.push_back({x - 1, y});
    res.push_back({x + 1, y});
    res.push_back({x, y - 1});
    res.push_back({x, y + 1});
    return res;
}
int f(int x1, int y1, int x2, int y2, int x3, int y3)
{
    int xx1 = x2 - x1, yy1 = y2 - y1;
    int xx2 = x3 - x1, yy2 = y3 - y1;
    return abs(xx1 * yy2 - xx2 * yy1);
}
void solve()
{
    vec<int> a(6);
    cin >> a;
    int ans = 0;
    for (auto [x1, y1] : c(a[0], a[1]))
    {
        for (auto [x2, y2] : c(a[2], a[3]))
        {
            for (auto [x3, y3] : c(a[4], a[5]))
            {
                chmax(ans, f(x1, y1, x2, y2, x3, y3));
            }
        }
    }
    cout << ans / 2. << endl;
}
int main()
{
    // srand((unsigned)time(NULL));
    cin.tie(nullptr);
    ios::sync_with_stdio(false);
    cout << fixed << setprecision(40);
    int t = 1;
    // cin >> t;
    while (t--)
        solve();
    return 0;
}
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