結果

問題 No.2328 Build Walls
ユーザー Kyo_s_sKyo_s_s
提出日時 2023-05-30 02:01:58
言語 C++14
(gcc 12.3.0 + boost 1.83.0)
結果
AC  
実行時間 142 ms / 3,000 ms
コード長 5,442 bytes
コンパイル時間 1,940 ms
コンパイル使用メモリ 182,392 KB
実行使用メモリ 13,440 KB
最終ジャッジ日時 2024-06-08 19:52:39
合計ジャッジ時間 5,539 ms
ジャッジサーバーID
(参考情報)
judge2 / judge1
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 2 ms
5,376 KB
testcase_07 AC 2 ms
5,376 KB
testcase_08 AC 2 ms
5,376 KB
testcase_09 AC 2 ms
5,376 KB
testcase_10 AC 2 ms
5,376 KB
testcase_11 AC 1 ms
5,376 KB
testcase_12 AC 1 ms
5,376 KB
testcase_13 AC 27 ms
8,576 KB
testcase_14 AC 41 ms
5,888 KB
testcase_15 AC 34 ms
5,888 KB
testcase_16 AC 7 ms
5,376 KB
testcase_17 AC 36 ms
6,656 KB
testcase_18 AC 3 ms
5,376 KB
testcase_19 AC 5 ms
5,376 KB
testcase_20 AC 4 ms
5,376 KB
testcase_21 AC 22 ms
8,064 KB
testcase_22 AC 62 ms
7,168 KB
testcase_23 AC 141 ms
13,312 KB
testcase_24 AC 131 ms
13,184 KB
testcase_25 AC 141 ms
13,312 KB
testcase_26 AC 114 ms
13,312 KB
testcase_27 AC 131 ms
13,312 KB
testcase_28 AC 45 ms
13,184 KB
testcase_29 AC 140 ms
13,312 KB
testcase_30 AC 49 ms
13,312 KB
testcase_31 AC 49 ms
13,312 KB
testcase_32 AC 133 ms
13,312 KB
testcase_33 AC 142 ms
13,184 KB
testcase_34 AC 52 ms
13,440 KB
testcase_35 AC 140 ms
13,312 KB
testcase_36 AC 2 ms
5,376 KB
権限があれば一括ダウンロードができます
コンパイルメッセージ
main.cpp: In function 'int main()':
main.cpp:129:14: warning: structured bindings only available with '-std=c++17' or '-std=gnu++17' [-Wc++17-extensions]
  129 |         auto [cost, pos] = que.top(); que.pop();
      |              ^
main.cpp:130:14: warning: structured bindings only available with '-std=c++17' or '-std=gnu++17' [-Wc++17-extensions]
  130 |         auto [x, y] = pos;
      |              ^
main.cpp:131:19: warning: structured bindings only available with '-std=c++17' or '-std=gnu++17' [-Wc++17-extensions]
  131 |         for (auto [dx, dy] : dxy) {
      |                   ^

ソースコード

diff #

#include <bits/stdc++.h>
using namespace std;
// #include <atcoder/all>
// using namespace atcoder;

/* alias */
using ull = unsigned long long;
using ll = long long;
using pii = pair<int, int>;
using pll = pair<ll, ll>;
using vi = vector<int>;
using vll = vector<long long>;
using vd = vector<double>;
using vs = vector<string>;
using vb = vector<bool>;
using vpii = vector<pair<int, int>>;
using vpll = vector<pair<ll, ll>>;
using vvi = vector<vector<int>>;
using vvll = vector<vector<long long>>;
using vvd = vector<vector<double>>;
using vvs = vector<vector<string>>;
using vvb = vector<vector<bool>>;
template<typename T> using min_priority_queue = priority_queue<T, vector<T>, greater<T>>;

/* define */
#define MOD 998244353
// #define MOD 1000000007
#define INF (1LL << 60)
#define elif else if
#define pb push_back
#define pf push_front
#define fi first
#define se second
#define all(obj) (obj).begin(), (obj).end()
#define YESNO(bool) cout << (bool ? "YES\n" : "NO\n")
#define YesNo(bool) cout << (bool ? "Yes\n" : "No\n")
#define yesno(bool) cout << (bool ? "yes\n" : "no\n")
template<class T> bool chmax(T &a, const T &b) {if(a<b){ a=b; return 1;} return 0;}
template<class T> bool chmin(T &a, const T &b) {if(b<a){ a=b; return 1;} return 0;}
#define debug(x) cerr << #x << ":" << x << "\n";

/* REP macro */
#define reps(i, a, n) for(ll i = (a); i < (n); i++)
#define rep(i, n) reps(i, 0, (n))
#define rrep(i, n) reps(i, 1, (n + 1))
#define repd(i, n) for(ll i = (n - 1); i >= 0; i--)
#define rrepd(i, n) for(ll i = (n); i >= 1; i--)
#define fore(i, a) for(auto &i: a)

/* vector */
template<class T> T vmax(vector<T> &array){ T ret = array[0]; for(T a: array) chmax(ret, a); return ret; }
template<class T> T vmin(vector<T> &array){ T ret = array[0]; for(T a: array) chmin(ret, a); return ret; }
template<class T> T sum(vector<T> &array){ T ret = 0; for(T a:array) ret += a; return ret; }
template<class T> void list_set(vector<T> &array){ sort(all(array)); array.erase(unique(all(array)),array.end()); }
template<class T> int bisect_left(vector<T> &array, T key){ return lower_bound(all(array),key) - array.begin(); }
template<class T> int bisect_right(vector<T> &array, T key){ return upper_bound(all(array),key) - array.begin(); }

/* string */
ll string_to_ll(string n){ ll ret = 0, k = 1; while(n.length() > 0){ ret += k * (n.back() - '0'); n.pop_back(); k *= 10; } return ret; }
string ll_to_string(ll n){ string ret = ""; while(n > 0){ ret.pb((n % 10) + '0'); n /= 10; } reverse(all(ret)); return ret; }

struct popopo{ popopo(){ cin.tie(0); ios::sync_with_stdio(0); cout << fixed << setprecision(15); }; } popopoppo;

// n = 1,...,N に対して、n % A < B を満たすものの数 
ll Count_of_n_mod_A_less_than_B(ll N, ll A, ll B){ return N / A * min(A, B) + min(N % A, B - 1); }


/* IN/OUT */
int scan() { return getchar(); }
void scan(int &a) { cin >> a; }
void scan(long long &a) { cin >> a; }
void scan(char &a) { cin >> a; }
void scan(double &a) { cin >> a; }
void scan(string &a) { cin >> a; }
template <class T, class S> void scan(pair<T, S> &p) { scan(p.first), scan(p.second); }
template <class T> void scan(vector<T> &);
template <class T> void scan(vector<T> &a) { for(auto &i : a) scan(i); }

void IN(){}
template<class Head, class... Tail> void IN(Head& head, Tail &...tail){ scan(head); IN(tail...); }

#define INT(...) int __VA_ARGS__; IN(__VA_ARGS__)
#define LL(...) ll __VA_ARGS__; IN(__VA_ARGS__)
#define STR(...) string __VA_ARGS__; IN(__VA_ARGS__)
#define VEC(type, name, size) vector<type> name(size); IN(name)
#define VECS(type, name, size) vector<type> name(size + 1); for(int i = 1; i <= size; i++) scan(name[i])

void OUT(){ cout << "\n"; }
template<class T> void output(T a){ cout << a; }
template<class T> void output(vector<T> v){ for(int i = 0; i < v.size(); i++) cout << v[i] << (i == v.size() - 1 ? "" : " "); }
template<class Head, class... Tail> void OUT(const Head &head, const Tail &...tail) { output(head); if(sizeof...(tail)) cout << " "; OUT(tail...); }

void FLASH(){ cout << endl; }
template<class Head, class... Tail> void FLASH(const Head  &head, const Tail &...tail) { output(head); if(sizeof...(tail)) cout << " "; FLASH(tail...); }




int main() {

    LL(H, W);
    vvll A(H, vll(W, -1));

    for (int h = 1; h < H - 1; h++) rep(w, W) {
        cin >> A[h][w];
    }

    vpll dxy = {
        {0, 1},
        {0, -1},
        {1, 0},
        {-1, 0},
        {1, 1},
        {1, -1},
        {-1, 1},
        {-1, -1}
    };

    min_priority_queue<pair<ll, pll>> que;
    vvll dist(H, vll(W, INF));
    for (int h = 1; h < H - 1; h++) {
        if (A[h][0] != -1) {
            que.push({A[h][0], {h, 0}});
            dist[h][0] = A[h][0];      
        }
    }

    while (!que.empty()) {
        auto [cost, pos] = que.top(); que.pop();
        auto [x, y] = pos;
        for (auto [dx, dy] : dxy) {
            ll nx = x + dx, ny = y + dy;
            if (nx < 0 || nx >= H || ny < 0 || ny >= W) continue;
            if (A[nx][ny] == -1) continue;
            if (dist[nx][ny] <= cost + A[nx][ny]) continue;
            dist[nx][ny] = cost + A[nx][ny];
            que.push({dist[nx][ny], {nx, ny}});
        }
    }

    ll ans = INF;
    pll pos = {0, 0};
    for (int h = 1; h < H - 1; h++) {
        if (dist[h][W - 1] < ans) {
            ans = dist[h][W - 1];
            pos = {h, W - 1};
        }
    }

    if (ans == INF) ans = -1;
    OUT(ans);




}
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