#411413 (C++17) No.960 マンハッタン距離3

提出ソース

結果

問題	No.960 マンハッタン距離3
ユーザー	Pachicobue
提出日時	2019-12-23 16:59:21
言語	C++17 (gcc 12.3.0 + boost 1.83.0)
結果	AC
実行時間	641 ms / 2,000 ms
コード長	12,266 bytes
コンパイル時間	1,884 ms
コンパイル使用メモリ	217,304 KB
実行使用メモリ	10,880 KB
最終ジャッジ日時	2024-09-17 15:01:39
合計ジャッジ時間	13,162 ms
ジャッジサーバーID （参考情報）	judge6 / judge5

このコードへのチャレンジ
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テストケース

テストケース表示

入力	結果	実行時間実行使用メモリ
testcase_00	AC	1 ms 5,248 KB
testcase_01	AC	2 ms 5,376 KB
testcase_02	AC	2 ms 5,376 KB
testcase_03	AC	1 ms 5,376 KB
testcase_04	AC	2 ms 5,376 KB
testcase_05	AC	1 ms 5,376 KB
testcase_06	AC	1 ms 5,376 KB
testcase_07	AC	1 ms 5,376 KB
testcase_08	AC	1 ms 5,376 KB
testcase_09	AC	2 ms 5,376 KB
testcase_10	AC	2 ms 5,376 KB
testcase_11	AC	2 ms 5,376 KB
testcase_12	AC	2 ms 5,376 KB
testcase_13	AC	2 ms 5,376 KB
testcase_14	AC	2 ms 5,376 KB
testcase_15	AC	2 ms 5,376 KB
testcase_16	AC	1 ms 5,376 KB
testcase_17	AC	1 ms 5,376 KB
testcase_18	AC	1 ms 5,376 KB
testcase_19	AC	2 ms 5,376 KB
testcase_20	AC	2 ms 5,376 KB
testcase_21	AC	2 ms 5,376 KB
testcase_22	AC	1 ms 5,376 KB
testcase_23	AC	1 ms 5,376 KB
testcase_24	AC	2 ms 5,376 KB
testcase_25	AC	2 ms 5,376 KB
testcase_26	AC	2 ms 5,376 KB
testcase_27	AC	1 ms 5,376 KB
testcase_28	AC	1 ms 5,376 KB
testcase_29	AC	1 ms 5,376 KB
testcase_30	AC	2 ms 5,376 KB
testcase_31	AC	2 ms 5,376 KB
testcase_32	AC	1 ms 5,376 KB
testcase_33	AC	2 ms 5,376 KB
testcase_34	AC	1 ms 5,376 KB
testcase_35	AC	1 ms 5,376 KB
testcase_36	AC	1 ms 5,376 KB
testcase_37	AC	2 ms 5,376 KB
testcase_38	AC	2 ms 5,376 KB
testcase_39	AC	2 ms 5,376 KB
testcase_40	AC	2 ms 5,376 KB
testcase_41	AC	2 ms 5,376 KB
testcase_42	AC	1 ms 5,376 KB
testcase_43	AC	1 ms 5,376 KB
testcase_44	AC	2 ms 5,376 KB
testcase_45	AC	2 ms 5,376 KB
testcase_46	AC	2 ms 5,376 KB
testcase_47	AC	2 ms 5,376 KB
testcase_48	AC	1 ms 5,376 KB
testcase_49	AC	2 ms 5,376 KB
testcase_50	AC	1 ms 5,376 KB
testcase_51	AC	1 ms 5,376 KB
testcase_52	AC	1 ms 5,376 KB
testcase_53	AC	2 ms 5,376 KB
testcase_54	AC	1 ms 5,376 KB
testcase_55	AC	1 ms 5,376 KB
testcase_56	AC	1 ms 5,376 KB
testcase_57	AC	2 ms 5,376 KB
testcase_58	AC	2 ms 5,376 KB
testcase_59	AC	2 ms 5,376 KB
testcase_60	AC	2 ms 5,376 KB
testcase_61	AC	2 ms 5,376 KB
testcase_62	AC	2 ms 5,376 KB
testcase_63	AC	2 ms 5,376 KB
testcase_64	AC	1 ms 5,376 KB
testcase_65	AC	2 ms 5,376 KB
testcase_66	AC	2 ms 5,376 KB
testcase_67	AC	1 ms 5,376 KB
testcase_68	AC	2 ms 5,376 KB
testcase_69	AC	1 ms 5,376 KB
testcase_70	AC	2 ms 5,376 KB
testcase_71	AC	2 ms 5,376 KB
testcase_72	AC	1 ms 5,376 KB
testcase_73	AC	1 ms 5,376 KB
testcase_74	AC	2 ms 5,376 KB
testcase_75	AC	2 ms 5,376 KB
testcase_76	AC	1 ms 5,376 KB
testcase_77	AC	2 ms 5,376 KB
testcase_78	AC	2 ms 5,376 KB
testcase_79	AC	1 ms 5,376 KB
testcase_80	AC	1 ms 5,376 KB
testcase_81	AC	2 ms 5,376 KB
testcase_82	AC	2 ms 5,376 KB
testcase_83	AC	2 ms 5,376 KB
testcase_84	AC	1 ms 5,376 KB
testcase_85	AC	2 ms 5,376 KB
testcase_86	AC	2 ms 5,376 KB
testcase_87	AC	2 ms 5,376 KB
testcase_88	AC	1 ms 5,376 KB
testcase_89	AC	1 ms 5,376 KB
testcase_90	AC	1 ms 5,376 KB
testcase_91	AC	2 ms 5,376 KB
testcase_92	AC	2 ms 5,376 KB
testcase_93	AC	1 ms 5,376 KB
testcase_94	AC	2 ms 5,376 KB
testcase_95	AC	2 ms 5,376 KB
testcase_96	AC	2 ms 5,376 KB
testcase_97	AC	1 ms 5,376 KB
testcase_98	AC	2 ms 5,376 KB
testcase_99	AC	2 ms 5,376 KB
testcase_100	AC	2 ms 5,376 KB
testcase_101	AC	2 ms 5,376 KB
testcase_102	AC	2 ms 5,376 KB
testcase_103	AC	1 ms 5,376 KB
testcase_104	AC	2 ms 5,376 KB
testcase_105	AC	2 ms 5,376 KB
testcase_106	AC	1 ms 5,376 KB
testcase_107	AC	1 ms 5,376 KB
testcase_108	AC	1 ms 5,376 KB
testcase_109	AC	2 ms 5,376 KB
testcase_110	AC	2 ms 5,376 KB
testcase_111	AC	2 ms 5,376 KB
testcase_112	AC	1 ms 5,376 KB
testcase_113	AC	1 ms 5,376 KB
testcase_114	AC	2 ms 5,376 KB
testcase_115	AC	2 ms 5,376 KB
testcase_116	AC	1 ms 5,376 KB
testcase_117	AC	1 ms 5,376 KB
testcase_118	AC	2 ms 5,376 KB
testcase_119	AC	2 ms 5,376 KB
testcase_120	AC	2 ms 5,376 KB
testcase_121	AC	2 ms 5,376 KB
testcase_122	AC	1 ms 5,376 KB
testcase_123	AC	1 ms 5,376 KB
testcase_124	AC	2 ms 5,376 KB
testcase_125	AC	2 ms 5,376 KB
testcase_126	AC	2 ms 5,376 KB
testcase_127	AC	1 ms 5,376 KB
testcase_128	AC	8 ms 5,376 KB
testcase_129	AC	19 ms 5,504 KB
testcase_130	AC	13 ms 5,376 KB
testcase_131	AC	22 ms 6,016 KB
testcase_132	AC	125 ms 8,064 KB
testcase_133	AC	3 ms 5,376 KB
testcase_134	AC	6 ms 5,376 KB
testcase_135	AC	18 ms 5,376 KB
testcase_136	AC	25 ms 5,376 KB
testcase_137	AC	11 ms 5,376 KB
testcase_138	AC	63 ms 6,784 KB
testcase_139	AC	80 ms 7,552 KB
testcase_140	AC	22 ms 5,376 KB
testcase_141	AC	115 ms 8,320 KB
testcase_142	AC	41 ms 5,376 KB
testcase_143	AC	14 ms 5,376 KB
testcase_144	AC	351 ms 9,472 KB
testcase_145	AC	26 ms 5,376 KB
testcase_146	AC	50 ms 5,376 KB
testcase_147	AC	228 ms 7,680 KB
testcase_148	AC	16 ms 5,376 KB
testcase_149	AC	31 ms 6,144 KB
testcase_150	AC	44 ms 8,064 KB
testcase_151	AC	3 ms 5,376 KB
testcase_152	AC	16 ms 5,376 KB
testcase_153	AC	21 ms 5,376 KB
testcase_154	AC	4 ms 5,376 KB
testcase_155	AC	110 ms 6,528 KB
testcase_156	AC	38 ms 5,376 KB
testcase_157	AC	115 ms 6,656 KB
testcase_158	AC	117 ms 10,368 KB
testcase_159	AC	13 ms 5,376 KB
testcase_160	AC	5 ms 5,376 KB
testcase_161	AC	147 ms 7,168 KB
testcase_162	AC	19 ms 5,376 KB
testcase_163	AC	11 ms 5,376 KB
testcase_164	AC	44 ms 7,040 KB
testcase_165	AC	29 ms 6,144 KB
testcase_166	AC	6 ms 5,376 KB
testcase_167	AC	16 ms 5,376 KB
testcase_168	AC	188 ms 5,376 KB
testcase_169	AC	241 ms 5,376 KB
testcase_170	AC	216 ms 5,376 KB
testcase_171	AC	343 ms 5,888 KB
testcase_172	AC	13 ms 5,376 KB
testcase_173	AC	4 ms 5,376 KB
testcase_174	AC	79 ms 9,472 KB
testcase_175	AC	96 ms 10,624 KB
testcase_176	AC	31 ms 6,272 KB
testcase_177	AC	7 ms 5,376 KB
testcase_178	AC	48 ms 7,168 KB
testcase_179	AC	73 ms 8,960 KB
testcase_180	AC	19 ms 5,376 KB
testcase_181	AC	5 ms 5,376 KB
testcase_182	AC	9 ms 5,376 KB
testcase_183	AC	13 ms 5,376 KB
testcase_184	AC	10 ms 5,376 KB
testcase_185	AC	14 ms 5,376 KB
testcase_186	AC	17 ms 5,376 KB
testcase_187	AC	14 ms 5,376 KB
testcase_188	AC	1 ms 5,376 KB
testcase_189	AC	1 ms 5,376 KB
testcase_190	AC	1 ms 5,376 KB
testcase_191	AC	1 ms 5,376 KB
testcase_192	AC	1 ms 5,376 KB
testcase_193	AC	2 ms 5,376 KB
testcase_194	AC	2 ms 5,376 KB
testcase_195	AC	2 ms 5,376 KB
testcase_196	AC	164 ms 7,808 KB
testcase_197	AC	40 ms 5,376 KB
testcase_198	AC	154 ms 6,656 KB
testcase_199	AC	641 ms 8,320 KB
testcase_200	AC	17 ms 5,376 KB
testcase_201	AC	10 ms 5,376 KB
testcase_202	AC	104 ms 7,680 KB
testcase_203	AC	115 ms 6,272 KB
testcase_204	AC	314 ms 10,496 KB
testcase_205	AC	89 ms 6,016 KB
testcase_206	AC	18 ms 5,376 KB
testcase_207	AC	14 ms 5,376 KB
testcase_208	AC	265 ms 8,448 KB
testcase_209	AC	86 ms 5,376 KB
testcase_210	AC	20 ms 5,376 KB
testcase_211	AC	89 ms 5,632 KB
testcase_212	AC	5 ms 5,376 KB
testcase_213	AC	11 ms 5,376 KB
testcase_214	AC	248 ms 10,880 KB
testcase_215	AC	346 ms 9,344 KB
testcase_216	AC	399 ms 10,240 KB
testcase_217	AC	168 ms 7,040 KB
testcase_218	AC	19 ms 5,376 KB
testcase_219	AC	11 ms 5,376 KB

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ソースコード

raw source code

#include <bits/stdc++.h>
// created [2019/12/23] 12:51:08
#pragma GCC diagnostic ignored "-Wsign-compare"
#pragma GCC diagnostic ignored "-Wsign-conversion"

using i32   = int32_t;
using i64   = int64_t;
using u32   = uint32_t;
using u64   = uint64_t;
using uint  = unsigned int;
using usize = std::size_t;
using ll    = long long;
using ull   = unsigned long long;
using ld    = long double;
template<typename T, usize n>
using arr = T (&)[n];
template<typename T, usize n>
using c_arr = const T (&)[n];
template<typename T> constexpr T popcount(const T u) { return u ? static_cast<T>(__builtin_popcountll(static_cast<u64>(u))) : static_cast<T>(0); }
template<typename T> constexpr T log2p1(const T u) { return u ? static_cast<T>(64 - __builtin_clzll(static_cast<u64>(u))) : static_cast<T>(0); }
template<typename T> constexpr T msbp1(const T u) { return log2p1(u); }
template<typename T> constexpr T lsbp1(const T u) { return __builtin_ffsll(u); }
template<typename T> constexpr T clog(const T u) { return u ? log2p1(u - 1) : static_cast<T>(u); }
template<typename T> constexpr bool ispow2(const T u) { return u and (static_cast<u64>(u) & static_cast<u64>(u - 1)) == 0; }
template<typename T> constexpr T ceil2(const T u) { return static_cast<T>(1) << clog(u); }
template<typename T> constexpr T floor2(const T u) { return u == 0 ? static_cast<T>(0) : static_cast<T>(1) << (log2p1(u) - 1); }
template<typename T> constexpr bool btest(const T mask, const usize ind) { return static_cast<bool>((static_cast<u64>(mask) >> ind) & static_cast<u64>(1)); }
template<typename T> void bset(T& mask, const usize ind) { mask |= (static_cast<T>(1) << ind); }
template<typename T> void breset(T& mask, const usize ind) { mask &= ~(static_cast<T>(1) << ind); }
template<typename T> void bflip(T& mask, const usize ind) { mask ^= (static_cast<T>(1) << ind); }
template<typename T> void bset(T& mask, const usize ind, const bool b) { (b ? bset(mask, ind) : breset(mask, ind)); }
template<typename T> constexpr T bcut(const T mask, const usize ind) { return ind == 0 ? static_cast<T>(0) : static_cast<T>((static_cast<u64>(mask) << (64 - ind)) >> (64 - ind)); }
template<typename T> bool chmin(T& a, const T& b) { return (a > b ? a = b, true : false); }
template<typename T> bool chmax(T& a, const T& b) { return (a < b ? a = b, true : false); }
constexpr unsigned int mod                  = 1000000007;
template<typename T> constexpr T inf_v      = std::numeric_limits<T>::max() / 4;
template<typename Real> constexpr Real pi_v = Real{3.141592653589793238462643383279502884};
auto mfp = [](auto&& f) { return [=](auto&&... args) { return f(f, std::forward<decltype(args)>(args)...); }; };

template<typename T>
T in()
{
    T v;
    return std::cin >> v, v;
}
template<typename T, typename Uint, usize n, usize i>
T in_v(typename std::enable_if<(i == n), c_arr<Uint, n>>::type) { return in<T>(); }
template<typename T, typename Uint, usize n, usize i>
auto in_v(typename std::enable_if<(i < n), c_arr<Uint, n>>::type& szs)
{
    const usize s = (usize)szs[i];
    std::vector<decltype(in_v<T, Uint, n, i + 1>(szs))> ans(s);
    for (usize j = 0; j < s; j++) { ans[j] = in_v<T, Uint, n, i + 1>(szs); }
    return ans;
}
template<typename T, typename Uint, usize n>
auto in_v(c_arr<Uint, n> szs) { return in_v<T, Uint, n, 0>(szs); }
template<typename... Types>
auto in_t() { return std::tuple<std::decay_t<Types>...>{in<Types>()...}; }
struct io_init
{
    io_init()
    {
        std::cin.tie(nullptr), std::ios::sync_with_stdio(false);
        std::cout << std::fixed << std::setprecision(20);
    }
    void clear()
    {
        std::cin.tie(), std::ios::sync_with_stdio(true);
    }
} io_setting;

template<typename T>
int out(const T& v) { return std::cout << v, 0; }
template<typename T>
int out(const std::vector<T>& v)
{
    for (usize i = 0; i < v.size(); i++) {
        if (i > 0) { std::cout << ' '; }
        out(v[i]);
    }
    return std::cout << "\n", 0;
}
template<typename T1, typename T2>
int out(const std::pair<T1, T2>& v) { return out(v.first), std::cout << ' ', out(v.second), 0; }
template<typename T, typename... Args>
int out(const T& v, const Args... args) { return out(v), std::cout << ' ', out(args...), 0; }
template<typename... Args>
int outln(const Args... args) { return out(args...), std::cout << '\n', 0; }
template<typename... Args>
void outel(const Args... args) { return out(args...), std::cout << std::endl, 0; }
#    define SHOW(...) static_cast<void>(0)
constexpr ull TEN(const usize n) { return n == 0 ? 1ULL : TEN(n - 1) * 10ULL; }

template<typename T, typename Uint, usize n, usize i>
auto make_v(typename std::enable_if<(i == n), c_arr<Uint, n>>::type, const T& v = T{}) { return v; }
template<typename T, typename Uint, usize n, usize i>
auto make_v(typename std::enable_if<(i < n), c_arr<Uint, n>>::type szs, const T& v = T{})
{
    const usize s = (usize)szs[i];
    return std::vector<decltype(make_v<T, Uint, n, i + 1>(szs, v))>(s, make_v<T, Uint, n, i + 1>(szs, v));
}
template<typename T, typename Uint, usize n>
auto make_v(c_arr<Uint, n> szs, const T& t = T{}) { return make_v<T, Uint, n, 0>(szs, t); }
int main()
{
    using pll    = std::pair<ll, ll>;
    const auto W = in<ll>(), H = in<ll>();
    auto enc     = [&](ll x, ll y) -> pll { return pll{x + y, y - x}; };
    auto dec     = [&](ll x, ll y) -> pll { return std::abs(x + y) % 2 == 1 ? pll{-1, -1} : pll{(x - y) / 2, (x + y) / 2}; };
    auto L1      = [&](ll x1, ll y1, ll x2, ll y2) { return std::abs(x1 - x2) + std::abs(y1 - y2); };
    auto Linf    = [&](ll x1, ll y1, ll x2, ll y2) { return std::max(std::abs(x1 - x2), std::abs(y1 - y2)); };
    auto is_in   = [&](ll x, ll y) { return 1 <= y and y <= H and 1 <= x and x <= W; };
    const auto N = in<int>();
    std::vector<ll> rxs(N), rys(N);
    for (int i = 0; i < N; i++) { rxs[i] = in<ll>(), rys[i] = in<ll>(); }
    {
        std::set<ll> parity;
        for (int i = 0; i < N; i++) { parity.insert(std::abs(rxs[i] + rys[i]) % 2); }
        if (parity.size() == 2) { return outln(0); }
    }
    std::vector<ll> xs(N), ys(N);
    for (int i = 0; i < N; i++) { std::tie(xs[i], ys[i]) = enc(rxs[i], rys[i]); }
    auto is_ok = [&](ll x, ll y) {
        if (not is_in(x, y)) { return false; }
        std::set<ll> ds;
        for (int i = 0; i < N; i++) { ds.insert(L1(rxs[i], rys[i], x, y)); }
        return ds.size() == 1;
    };
    SHOW(xs, ys);
    const ll ym = *std::min_element(ys.begin(), ys.end());
    const ll xm = *std::min_element(xs.begin(), xs.end());
    const ll yM = *std::max_element(ys.begin(), ys.end());
    const ll xM = *std::max_element(xs.begin(), xs.end());

    if (xm == xM) {  // AC
        ll p1 = xm * 2 + (yM - ym), q1 = ym + yM;
        ll p2 = xm * 2 - (yM - ym), q2 = ym + yM;
        if (p1 % 2 == 1 or q1 % 2 == 1) { return outln(0); }
        p1 /= 2, q1 /= 2;
        p2 /= 2, q2 /= 2;
        std::tie(p1, q1) = dec(p1, q1);
        std::tie(p2, q2) = dec(p2, q2);
        if (not is_ok(p1, q1) or not is_ok(p2, q2)) { return outln(0); }
        SHOW(p1, q1), SHOW(p2, q2);
        ll ans = (W - p1 + 1) * (H - q1 + 1) + p2 * q2;
        if (N == 2) { ans += (p1 - p2 - 1); }
        return outln(ans);
    }
    if (ym == yM) {  // AC
        ll p1 = xm + xM, q1 = ym * 2 - (xM - xm);
        ll p2 = xm + xM, q2 = ym * 2 + (xM - xm);
        if (p1 % 2 == 1 or q1 % 2 == 1) { return outln(0); }
        p1 /= 2, q1 /= 2;
        p2 /= 2, q2 /= 2;
        std::tie(p1, q1) = dec(p1, q1);
        std::tie(p2, q2) = dec(p2, q2);
        if (not is_ok(p1, q1) or not is_ok(p2, q2)) { return outln(0); }
        SHOW(p1, q1), SHOW(p2, q2);
        ll ans = (W - p1 + 1) * q1 + p2 * (H - q2 + 1);
        if (N == 2) { ans += (p1 - p2 - 1); }
        return outln(ans);
    }
    if (xM - xm == yM - ym) {  // AC
        ll p = xm + xM, q = ym + yM;
        if (p % 2 == 1 or q % 2 == 1) { return outln(0); }
        p /= 2, q /= 2;
        std::tie(p, q) = dec(p, q);
        if (not is_ok(p, q)) { return outln(0); }
        ll ans            = 1;
        constexpr ll dx[] = {-1, -1, -1, 0, 0, 1, 1, 1};
        constexpr ll dy[] = {-1, 0, 1, -1, 1, -1, 0, 1};
        for (int i = 0; i < 8; i++) {
            ll inf = 0, sup = H + W;
            while (sup - inf > 1) {
                const ll mid = (inf + sup) / 2;
                const ll np = p + mid * dx[i], nq = q + mid * dy[i];
                (is_ok(np, nq) ? inf : sup) = mid;
            }
            ans += inf;
        }
        return outln(ans);
    } else if (xM - xm < yM - ym) {
        ll p1 = xm * 2 + (yM - ym), q1 = ym + yM;
        ll p2 = xM * 2 - (yM - ym), q2 = ym + yM;
        if (p1 % 2 == 1 or q1 % 2 == 1) { return outln(0); }
        p1 /= 2, q1 /= 2;
        p2 /= 2, q2 /= 2;
        std::tie(p1, q1) = dec(p1, q1);
        std::tie(p2, q2) = dec(p2, q2);
        ll ans           = 0;
        if (is_ok(p1, q1)) {
            ans++;
            ll inf = 0, sup = H + W;
            while (sup - inf > 1) {
                const ll mid = (inf + sup) / 2;
                const ll np1 = p1, nq1 = q1 + mid;
                (is_ok(np1, nq1) ? inf : sup) = mid;
            }
            ans += inf;
            inf = 0, sup = H + W;
            while (sup - inf > 1) {
                const ll mid = (inf + sup) / 2;
                const ll np1 = p1 + mid, nq1 = q1;
                (is_ok(np1, nq1) ? inf : sup) = mid;
            }
            ans += inf;
        }
        if (is_ok(p2, q2)) {
            ans++;
            ll inf = 0, sup = H + W;
            while (sup - inf > 1) {
                const ll mid = (inf + sup) / 2;
                const ll np2 = p2, nq2 = q2 - mid;
                (is_ok(np2, nq2) ? inf : sup) = mid;
            }
            ans += inf;
            inf = 0, sup = H + W;
            while (sup - inf > 1) {
                const ll mid = (inf + sup) / 2;
                const ll np2 = p2 - mid, nq2 = q2;
                (is_ok(np2, nq2) ? inf : sup) = mid;
            }
            ans += inf;
        }
        if (is_ok(p1, q1) and is_ok(p2, q2)) {
            ll inf = 0, sup = H + W;
            while (sup - inf > 1) {
                const ll mid = (inf + sup) / 2;
                const ll np = p1 - mid, nq = q1 - mid;
                (is_ok(np, nq) ? inf : sup) = mid;
            }
            ans += inf - 1;
        }
        return outln(ans);
    } else {
        ll p1 = xm + xM, q1 = yM * 2 - (xM - xm);
        ll p2 = xm + xM, q2 = ym * 2 + (xM - xm);
        if (p1 % 2 == 1 or q1 % 2 == 1) { return outln(0); }
        p1 /= 2, q1 /= 2;
        p2 /= 2, q2 /= 2;
        std::tie(p1, q1) = dec(p1, q1);
        std::tie(p2, q2) = dec(p2, q2);
        ll ans           = 0;
        if (is_ok(p1, q1)) {
            ans++;
            ll inf = 0, sup = H + W;
            while (sup - inf > 1) {
                const ll mid = (inf + sup) / 2;
                const ll np1 = p1 + mid, nq1 = q1;
                (is_ok(np1, nq1) ? inf : sup) = mid;
            }
            ans += inf;
            inf = 0, sup = H + W;
            while (sup - inf > 1) {
                const ll mid = (inf + sup) / 2;
                const ll np1 = p1, nq1 = q1 - mid;
                (is_ok(np1, nq1) ? inf : sup) = mid;
            }
            ans += inf;
        }
        if (is_ok(p2, q2)) {
            ans++;
            ll inf = 0, sup = H + W;
            while (sup - inf > 1) {
                const ll mid = (inf + sup) / 2;
                const ll np2 = p2 - mid, nq2 = q2;
                (is_ok(np2, nq2) ? inf : sup) = mid;
            }
            ans += inf;
            inf = 0, sup = H + W;
            while (sup - inf > 1) {
                const ll mid = (inf + sup) / 2;
                const ll np2 = p2, nq2 = q2 + mid;
                (is_ok(np2, nq2) ? inf : sup) = mid;
            }
            ans += inf;
        }
        if (is_ok(p1, q1) and is_ok(p2, q2)) {
            ll inf = 0, sup = H + W;
            while (sup - inf > 1) {
                const ll mid = (inf + sup) / 2;
                const ll np = p1 - mid, nq = q1 + mid;
                (is_ok(np, nq) ? inf : sup) = mid;
            }
            ans += inf - 1;
        }
        return outln(ans);
    }
    return 0;
}

yukicoder

結果

テストケース

ソースコード