結果

問題 No.2639 Longest Increasing Walk
ユーザー shogo314shogo314
提出日時 2024-02-19 21:26:53
言語 C++23
(gcc 12.3.0 + boost 1.83.0)
結果
AC  
実行時間 253 ms / 2,000 ms
コード長 6,635 bytes
コンパイル時間 3,217 ms
コンパイル使用メモリ 265,772 KB
実行使用メモリ 34,560 KB
最終ジャッジ日時 2024-09-29 01:22:44
合計ジャッジ時間 6,577 ms
ジャッジサーバーID
（参考情報） 		judge1 / 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 2 ms
6,816 KB
testcase_01 AC 3 ms
6,820 KB
testcase_02 AC 2 ms
6,820 KB
testcase_03 AC 2 ms
6,820 KB
testcase_04 AC 48 ms
11,096 KB
testcase_05 AC 134 ms
34,560 KB
testcase_06 AC 134 ms
34,048 KB
testcase_07 AC 203 ms
33,920 KB
testcase_08 AC 139 ms
34,304 KB
testcase_09 AC 253 ms
34,432 KB
testcase_10 AC 183 ms
20,864 KB
testcase_11 AC 157 ms
19,072 KB
testcase_12 AC 14 ms
6,816 KB
testcase_13 AC 221 ms
22,272 KB
testcase_14 AC 103 ms
14,208 KB
testcase_15 AC 2 ms
6,820 KB
testcase_16 AC 3 ms
6,816 KB
testcase_17 AC 21 ms
6,820 KB
testcase_18 AC 135 ms
16,128 KB
testcase_19 AC 23 ms
6,912 KB
testcase_20 AC 56 ms
11,136 KB
testcase_21 AC 168 ms
18,944 KB
testcase_22 AC 43 ms
8,872 KB
testcase_23 AC 2 ms
6,820 KB
testcase_24 AC 2 ms
6,820 KB
testcase_25 AC 2 ms
6,816 KB
testcase_26 AC 2 ms
6,820 KB
testcase_27 AC 3 ms
6,820 KB
testcase_28 AC 2 ms
6,820 KB
testcase_29 AC 2 ms
6,816 KB
testcase_30 AC 2 ms
6,816 KB
testcase_31 AC 2 ms
6,820 KB
testcase_32 AC 2 ms
6,816 KB
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 # 

#line 2 "/home/shogo314/cpp_include/ou-library/io.hpp"
/**
 * @file io.hpp
 * @brief 空白区切り出力、iostreamのオーバーロード
 */

#include <array>
#include <iostream>
#include <utility>
#include <tuple>
#include <vector>

namespace tuple_io {
    template <typename Tuple, size_t I, typename CharT, typename Traits>
    std::basic_istream<CharT, Traits>& read_tuple(std::basic_istream<CharT, Traits>& is, Tuple& t) {
        is >> std::get<I>(t);
        if constexpr (I + 1 < std::tuple_size_v<Tuple>) {
            return read_tuple<Tuple, I + 1>(is, t);
        }
        return is;
    }
    template <typename Tuple, size_t I, typename CharT, typename Traits>
    std::basic_ostream<CharT, Traits>& write_tuple(std::basic_ostream<CharT, Traits>& os, const Tuple& t) {
        os << std::get<I>(t);
        if constexpr (I + 1 < std::tuple_size_v<Tuple>) {
            os << CharT(' ');
            return write_tuple<Tuple, I + 1>(os, t);
        }
        return os;
    }
};

template <typename T1, typename T2, typename CharT, typename Traits>
std::basic_istream<CharT, Traits>& operator>>(std::basic_istream<CharT, Traits>& is, std::pair<T1, T2>& p) {
    is >> p.first >> p.second;
    return is;
}
template <typename... Types, typename CharT, typename Traits>
std::basic_istream<CharT, Traits>& operator>>(std::basic_istream<CharT, Traits>& is, std::tuple<Types...>& p) {
    return tuple_io::read_tuple<std::tuple<Types...>, 0>(is, p);
}
template <typename T, size_t N, typename CharT, typename Traits>
std::basic_istream<CharT, Traits>& operator>>(std::basic_istream<CharT, Traits>& is, std::array<T, N>& a) {
    for(auto& e : a) is >> e;
    return is;
}
template <typename T, typename CharT, typename Traits>
std::basic_istream<CharT, Traits>& operator>>(std::basic_istream<CharT, Traits>& is, std::vector<T>& v) {
    for(auto& e : v) is >> e;
    return is;
}

template <typename T1, typename T2, typename CharT, typename Traits>
std::basic_ostream<CharT, Traits>& operator<<(std::basic_ostream<CharT, Traits>& os, const std::pair<T1, T2>& p) {
    os << p.first << CharT(' ') << p.second;
    return os;
}
template <typename... Types, typename CharT, typename Traits>
std::basic_ostream<CharT, Traits>& operator<<(std::basic_ostream<CharT, Traits>& os, const std::tuple<Types...>& p) {
    return tuple_io::write_tuple<std::tuple<Types...>, 0>(os, p);
}
template <typename T, size_t N, typename CharT, typename Traits>
std::basic_ostream<CharT, Traits>& operator<<(std::basic_ostream<CharT, Traits>& os, const std::array<T, N>& a) {
    for(size_t i = 0; i < N; ++i) {
        if(i) os << CharT(' ');
        os << a[i];
    }
    return os;
}
template <typename T, typename CharT, typename Traits>
std::basic_ostream<CharT, Traits>& operator<<(std::basic_ostream<CharT, Traits>& os, const std::vector<T>& v) {
    for(size_t i = 0; i < v.size(); ++i) {
        if(i) os << CharT(' ');
        os << v[i];
    }
    return os;
}

/**
 * @brief 空行出力
 */
void print() { std::cout << '\n'; }
/**
 * @brief 出力して改行
 * 
 * @tparam T 型
 * @param x 出力する値
 */
template <typename T>
void print(const T& x) { std::cout << x << '\n'; }
/**
 * @brief 空白区切りで出力して改行
 * 
 * @tparam T 1つ目の要素の型
 * @tparam Tail 2つ目以降の要素の型
 * @param x 1つ目の要素
 * @param tail 2つ目以降の要素
 */
template <typename T, typename... Tail>
void print(const T& x, const Tail&... tail) {
    std::cout << x << ' ';
    print(tail...);
}
#line 1 "/home/shogo314/cpp_include/sh-library/base.hpp"
#include <bits/stdc++.h>

#pragma GCC target("avx2")
#pragma GCC optimize("O3")
#pragma GCC optimize("unroll-loops")

using namespace std;
using ll = long long;
using ull = unsigned long long;
using str = string;
using pl = pair<ll, ll>;
template <typename T>
using ml = map<ll, T>;
using mll = map<ll, ll>;
using sl = set<ll>;
using ld = long double;
using pd = pair<ld, ld>;
template <typename T>
using vec = vector<T>;
template <typename T>
using vv = vector<vector<T>>;
template <typename T>
using vvv = vector<vector<vector<T>>>;
template <typename T1, typename T2>
using vp = vector<pair<T1, T2>>;
using vl = vec<ll>;
using vvl = vv<ll>;
using vvvl = vvv<ll>;
using vs = vec<str>;
using vc = vec<char>;
using vi = vec<int>;
using vb = vec<bool>;
using vpl = vec<pl>;
using spl = set<pl>;
using vd = vec<ld>;
using vpd = vec<pd>;
template <typename T, int N>
using ary = array<T, N>;
template <int N>
using al = array<ll, N>;
template <int N1, int N2>
using aal = array<array<ll, N2>, N1>;
template <int N>
using val = vec<al<N>>;

#define all(obj) (obj).begin(), (obj).end()

#define reps(i, a, n) for (ll i = (a); i < ll(n); i++)
#define rep(i, n) reps(i, 0, (n))
#define rrep(i, n) reps(i, 1, (n) + 1)
#define repds(i, a, n) for (ll i = ((n) - 1); i >= (a); i--)
#define repd(i, n) repds(i, 0, (n))
#define rrepd(i, n) repds(i, 1, (n) + 1)
#define rep2(i, j, x, y) rep(i, x) rep(j, y)

template <typename T1, typename T2>
inline bool chmin(T1 &a, T2 b) {
    if (a > b) {
        a = b;
        return true;
    }
    return false;
}

template <typename T1, typename T2>
inline bool chmax(T1 &a, T2 b) {
    if (a < b) {
        a = b;
        return true;
    }
    return false;
}

#define LL(x) ll x;cin >> x;
#define VL(a,n) vl a(n);cin >> a;
#define AL(a,k) al<k> a;cin >> a;
#define VC(a,n) vc a(n);cin >> a;
#define VS(a,n) vs a(n);cin >> a;
#define STR(s) str s;cin >> s;
#define VPL(a,n) vpl a(n);cin >> a;
#define VAL(a,n,k) val<k> a(n);cin >> a;
#define VVL(a,n,m) vvl a(n,vl(m));cin >> a;
#define SL(a,n) sl a;{VL(b,n);a=sl(all(b));}

template <typename T>
using heap_max = priority_queue<T, vec<T>, less<T>>;
template <typename T>
using heap_min = priority_queue<T, vec<T>, greater<T>>;
#line 3 "main.cpp"

void solve() {
    LL(H);
    LL(W);
    VVL(A, H, W);
    ml<vpl> m;
    rep2(i, j, H, W) {
        m[A[i][j]].push_back({i, j});
    }
    vvl dp(H, vl(W));
    for (const auto& [_, v] : m) {
        for (auto [i, j] : v) {
            for (auto [di, dj] : vpl{{-1, 0}, {1, 0}, {0, 1}, {0, -1}}) {
                if (i + di < 0) continue;
                if (i + di >= H) continue;
                if (j + dj < 0) continue;
                if (j + dj >= W) continue;
                if (A[i][j] > A[i + di][j + dj]) {
                    chmax(dp[i][j], dp[i + di][j + dj] + 1);
                }
            }
        }
    }
    ll ans = 0;
    rep2(i, j, H, W) {
        chmax(ans, dp[i][j]);
    }
    print(ans + 1);
}

int main() {
    cin.tie(nullptr);
    ios_base::sync_with_stdio(false);
    solve();
}
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