結果

問題 No.2328 Build Walls
ユーザー tomo0608tomo0608
提出日時 2023-05-28 15:08:54
言語 C++17
(gcc 12.3.0 + boost 1.83.0)
結果
AC  
実行時間 148 ms / 3,000 ms
コード長 7,310 bytes
コンパイル時間 2,716 ms
コンパイル使用メモリ 226,248 KB
実行使用メモリ 13,536 KB
最終ジャッジ日時 2023-08-27 11:30:40
合計ジャッジ時間 6,111 ms
ジャッジサーバーID
（参考情報） 		judge14 / judge13
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
4,376 KB
testcase_01 AC 2 ms
4,376 KB
testcase_02 AC 1 ms
4,376 KB
testcase_03 AC 1 ms
4,380 KB
testcase_04 AC 2 ms
4,376 KB
testcase_05 AC 2 ms
4,380 KB
testcase_06 AC 1 ms
4,376 KB
testcase_07 AC 1 ms
4,380 KB
testcase_08 AC 2 ms
4,380 KB
testcase_09 AC 2 ms
4,380 KB
testcase_10 AC 2 ms
4,376 KB
testcase_11 AC 1 ms
4,380 KB
testcase_12 AC 2 ms
4,380 KB
testcase_13 AC 31 ms
8,304 KB
testcase_14 AC 44 ms
5,676 KB
testcase_15 AC 38 ms
5,808 KB
testcase_16 AC 8 ms
4,376 KB
testcase_17 AC 39 ms
6,480 KB
testcase_18 AC 2 ms
4,380 KB
testcase_19 AC 6 ms
4,376 KB
testcase_20 AC 5 ms
4,380 KB
testcase_21 AC 25 ms
7,800 KB
testcase_22 AC 66 ms
7,232 KB
testcase_23 AC 148 ms
13,536 KB
testcase_24 AC 140 ms
13,348 KB
testcase_25 AC 146 ms
13,264 KB
testcase_26 AC 118 ms
13,256 KB
testcase_27 AC 135 ms
13,396 KB
testcase_28 AC 49 ms
13,008 KB
testcase_29 AC 148 ms
13,504 KB
testcase_30 AC 55 ms
13,236 KB
testcase_31 AC 53 ms
13,296 KB
testcase_32 AC 134 ms
13,256 KB
testcase_33 AC 144 ms
13,268 KB
testcase_34 AC 57 ms
13,320 KB
testcase_35 AC 146 ms
13,268 KB
testcase_36 AC 2 ms
4,380 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 # 

/**
*    author:  tomo0608
*    created: 01.05.2023 18:24:08
**/

#ifdef __LOCAL
#define _GLIBCXX_DEBUG
#endif
#pragma GCC optimize("Ofast")
#include <bits/stdc++.h>
#include <atcoder/modint>

namespace tomo0608 {
    typedef long long ll;
    typedef long double ld;
    template <class T> using V = std::vector<T>;
    template <class T> using VV = V<V<T>>;
    template <class T> using VVV = V<VV<T>>;
    typedef std::pair<int, int> pii;
    typedef std::pair<long long, long long> pll;
    template<class... T>void input(T&... a) { (std::cin >> ... >> a); };

#define INT(...) int __VA_ARGS__; input(__VA_ARGS__)
#define LL(...) long long __VA_ARGS__; input(__VA_ARGS__)
#define STR(...) string __VA_ARGS__; input(__VA_ARGS__)
#define DBL(...) double __VA_ARGS__; input(__VA_ARGS__)
    std::istream& operator>>(std::istream& is, atcoder::modint998244353& a) { long long v; is >> v; a = v; return is; }
    std::ostream& operator<<(std::ostream& os, const atcoder::modint998244353& a) { return os << a.val(); }
    std::istream& operator>>(std::istream& is, atcoder::modint1000000007& a) { long long v; is >> v; a = v; return is; }
    std::ostream& operator<<(std::ostream& os, const atcoder::modint1000000007& a) { return os << a.val(); }
    template<int m> std::istream& operator>>(std::istream& is, atcoder::static_modint<m>& a) { long long v; is >> v; a = v; return is; }
    template<int m> std::ostream& operator<<(std::ostream& os, const atcoder::static_modint<m>& a) { return os << a.val(); }
    template<int m> std::istream& operator>>(std::istream& is, atcoder::dynamic_modint<m>& a) { long long v; is >> v; a = v; return is; }
    template<int m> std::ostream& operator<<(std::ostream& os, const atcoder::dynamic_modint<m>& a) { return os << a.val(); }
    template<class T1, class T2> std::istream& operator>>(std::istream& is, std::pair<T1, T2>& p) { is >> p.first >> p.second; return is; }
    template<class T1, class T2> std::ostream& operator<<(std::ostream& os, const std::pair<T1, T2>& p) { os << '(' << p.first << ", " << p.second << ')'; return os; }
    template<class T> std::istream& operator>>(std::istream& is, std::vector<T>& v) { for (auto& e : v) is >> e; return is; }
    template<class T> std::ostream& operator<<(std::ostream& os, const std::vector<T>& v) { for (auto& e : v) os << e << ' '; return os; }
    template<typename T> std::ostream& operator << (std::ostream& os, std::set<T>& set_var) { os << "{"; for (auto itr = set_var.begin(); itr != set_var.end(); itr++) { os << *itr;++itr;if (itr != set_var.end()) os << ", ";itr--; }os << "}";return os; }
    template <typename T, typename U> std::ostream& operator<<(std::ostream& os, std::map<T, U>& map_var) { os << "{";for (auto itr = map_var.begin(); itr != map_var.end(); itr++) { os << *itr;itr++;if (itr != map_var.end()) os << ", ";itr--; }os << "}";return os; }

    void print() { std::cout << '\n'; }
    template<class T, class... Ts>void print(const T& a, const Ts&... b) { std::cout << a; (std::cout << ... << (std::cout << ' ', b)); std::cout << '\n'; }
    void drop() { std::cout << '\n';exit(0); }
    template<class T, class... Ts>void drop(const T& a, const Ts&... b) { std::cout << a; (std::cout << ... << (std::cout << ' ', b)); std::cout << '\n';exit(0); }
#ifdef __LOCAL
    void debug_out() { std::cerr << std::endl; }
    template < class Head, class... Tail> void debug_out(Head H, Tail... T) { std::cerr << ' ' << H; debug_out(T...); }
#define debug(...) std::cerr << 'L' << __LINE__ << " [" << #__VA_ARGS__ << "]:", debug_out(__VA_ARGS__)
#define dump(x) std::cerr << 'L' << __LINE__ << " " << #x << " = " << (x) << std::endl
#else
#define debug(...) (void(0))
#define dump(x) (void(0))
#endif


#define rep1(a)          for(long long i = 0; i < a; i++)
#define rep2(i, a)       for(long long i = 0; i < a; i++)
#define rep3(i, a, b)    for(long long i = a; i < b; i++)
#define rep4(i, a, b, c) for(long long i = a; i < b; i += c)
#define drep1(a)          for(long long i = a-1; i >= 0; i--)
#define drep2(i, a)       for(long long i = a-1; i >= 0; i--)
#define drep3(i, a, b)    for(long long i = a-1; i >= b; i--)
#define drep4(i, a, b, c) for(long long i = a-1; i >= b; i -= c)
#define overload4(a, b, c, d, e, ...) e
#define rep(...) overload4(__VA_ARGS__, rep4, rep3, rep2, rep1)(__VA_ARGS__)
#define drep(...) overload4(__VA_ARGS__, drep4, drep3, drep2, drep1)(__VA_ARGS__)

} // namespace tomo0608

int dx[8] = { 1, 0, -1, 0, 1, 1, -1, -1 };
int dy[8] = { 0, 1, 0, -1, 1, -1, -1, 1 };
#define endl '\n'


namespace tomo0608 {
#define all(x) x.begin(),x.end()
    template <class T = long long, class S> T SUM(const S& v) { return accumulate(all(v), T(0)); }
#define MIN(v) *min_element(all(v))
#define MAX(v) *max_element(all(v))
#define lb(c, x) distance((c).begin(), lower_bound(all(c), (x)))
#define ub(c, x) distance((c).begin(), upper_bound(all(c), (x)))
#define UNIQUE(x) sort(all(x)), x.erase(unique(all(x)), x.end())
    template <typename T> void zip(std::vector<T>& x) { std::vector<T> y = x;UNIQUE(y);for (int i = 0; i < x.size(); ++i) { x[i] = lb(y, x[i]); } }
    template<class T> using priority_queue_rev = std::priority_queue<T, std::vector<T>, std::greater<T>>;
    template<class T, class U> inline bool chmax(T& a, const U& b) { if (a < b) { a = b; return 1; } return 0; }
    template<class T, class U> inline bool chmin(T& a, const U& b) { if (a > b) { a = b; return 1; } return 0; }
    template<class T> inline int count_between(std::vector<T>& a, T l, T r) { return lower_bound(all(a), r) - lower_bound(all(a), l); } // [l, r)
#define bit(n, k) ((n >> k) & 1) /*nのk bit目*/
    int topbit(signed t) { return t == 0 ? -1 : 31 - __builtin_clz(t); }
    int topbit(long long t) { return t == 0 ? -1 : 63 - __builtin_clzll(t); }
    int lowbit(signed a) { return a == 0 ? 32 : __builtin_ctz(a); }
    int lowbit(long long a) { return a == 0 ? 64 : __builtin_ctzll(a); }
    template <typename T>T mypow(T x, long long n) { T ret = 1;while (n > 0) { if (n & 1)(ret *= x);(x *= x);n >>= 1; }return ret; }
}

//typedef atcoder::modint1000000007 mint;
typedef atcoder::modint998244353 mint;
using namespace atcoder;
using namespace std;
using namespace tomo0608;
#include <atcoder/fenwicktree>

const ll inf = 1e18;
void solve() {
    INT(h, w);
    VV<ll> a(h - 2, V<ll>(w));cin >> a;
    VV<ll> dist(h - 2, V<ll>(w, inf));
    priority_queue_rev<tuple<ll, ll, ll>> pq;
    rep(i, h - 2) {
        if (a[i][0] >= 0) {
            dist[i][0] = a[i][0];
            pq.emplace(dist[i][0], i, 0);
        }
    }
    while (!pq.empty()) {
        auto [d, x, y] = pq.top();
        pq.pop();
        if (dist[x][y] < d)continue;
        rep(i, 8) {
            int nx = x + dx[i], ny = y + dy[i];
            if (nx < 0 || nx >= h - 2 || ny < 0 || ny >= w)continue;
            if (a[nx][ny] == -1)continue;
            if (chmin(dist[nx][ny], dist[x][y] + a[nx][ny]))pq.emplace(dist[nx][ny], nx, ny);
        }
    }
    ll ans = inf;
    rep(i, h - 2)chmin(ans, dist[i][w - 1]);
    if (ans >= inf)ans = -1;
    print(ans);
}

int main() {
    std::cin.tie(0);
    std::ios_base::sync_with_stdio(false);
    std::cout << std::setprecision(20);
    int codeforces = 1;
    //cin >> codeforces;
    while (codeforces--) {
        solve();
    }
    return 0;
}
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