結果

問題 No.2657 Falling Block Game
コンテスト
ユーザー noya2
提出日時 2024-03-05 00:07:11
言語 C++23
(gcc 13.3.0 + boost 1.87.0)
結果
AC  
実行時間 235 ms / 2,000 ms
コード長 6,849 bytes
コンパイル時間 3,314 ms
コンパイル使用メモリ 262,332 KB
実行使用メモリ 8,160 KB
最終ジャッジ日時 2024-09-29 17:42:13
合計ジャッジ時間 8,638 ms
ジャッジサーバーID
（参考情報） 		judge1 / judge3
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 * 37
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 "/Users/noya2/Desktop/Noya2_library/template/template.hpp"
using namespace std;

#include<bits/stdc++.h>
#line 1 "/Users/noya2/Desktop/Noya2_library/template/inout_old.hpp"
namespace noya2 {

template <typename T, typename U>
ostream &operator<<(ostream &os, const pair<T, U> &p){
    os << p.first << " " << p.second;
    return os;
}
template <typename T, typename U>
istream &operator>>(istream &is, pair<T, U> &p){
    is >> p.first >> p.second;
    return is;
}

template <typename T>
ostream &operator<<(ostream &os, const vector<T> &v){
    int s = (int)v.size();
    for (int i = 0; i < s; i++) os << (i ? " " : "") << v[i];
    return os;
}
template <typename T>
istream &operator>>(istream &is, vector<T> &v){
    for (auto &x : v) is >> x;
    return is;
}

void in() {}
template <typename T, class... U>
void in(T &t, U &...u){
    cin >> t;
    in(u...);
}

void out() { cout << "\n"; }
template <typename T, class... U, char sep = ' '>
void out(const T &t, const U &...u){
    cout << t;
    if (sizeof...(u)) cout << sep;
    out(u...);
}

template<typename T>
void out(const vector<vector<T>> &vv){
    int s = (int)vv.size();
    for (int i = 0; i < s; i++) out(vv[i]);
}

struct IoSetup {
    IoSetup(){
        cin.tie(nullptr);
        ios::sync_with_stdio(false);
        cout << fixed << setprecision(15);
        cerr << fixed << setprecision(7);
    }
} iosetup_noya2;

} // namespace noya2
#line 1 "/Users/noya2/Desktop/Noya2_library/template/const.hpp"
namespace noya2{

const int iinf = 1'000'000'007;
const long long linf = 2'000'000'000'000'000'000LL;
const long long mod998 =  998244353;
const long long mod107 = 1000000007;
const long double pi = 3.14159265358979323;
const vector<int> dx = {0,1,0,-1,1,1,-1,-1};
const vector<int> dy = {1,0,-1,0,1,-1,-1,1};
const string ALP = "ABCDEFGHIJKLMNOPQRSTUVWXYZ";
const string alp = "abcdefghijklmnopqrstuvwxyz";
const string NUM = "0123456789";

void yes(){ cout << "Yes\n"; }
void no(){ cout << "No\n"; }
void YES(){ cout << "YES\n"; }
void NO(){ cout << "NO\n"; }
void yn(bool t){ t ? yes() : no(); }
void YN(bool t){ t ? YES() : NO(); }

} // namespace noya2
#line 1 "/Users/noya2/Desktop/Noya2_library/template/utils.hpp"
namespace noya2{

unsigned long long inner_binary_gcd(unsigned long long a, unsigned long long b){
    if (a == 0 || b == 0) return a + b;
    int n = __builtin_ctzll(a); a >>= n;
    int m = __builtin_ctzll(b); b >>= m;
    while (a != b) {
        int mm = __builtin_ctzll(a - b);
        bool f = a > b;
        unsigned long long c = f ? a : b;
        b = f ? b : a;
        a = (c - b) >> mm;
    }
    return a << min(n, m);
}

template<typename T> T gcd_fast(T a, T b){ return static_cast<T>(inner_binary_gcd(abs(a),abs(b))); }

long long sqrt_fast(long long n) {
    if (n <= 0) return 0;
    long long x = sqrt(n);
    while ((x + 1) * (x + 1) <= n) x++;
    while (x * x > n) x--;
    return x;
}

template<typename T> T floor_div(const T n, const T d) {
    assert(d != 0);
    return n / d - static_cast<T>((n ^ d) < 0 && n % d != 0);
}

template<typename T> T ceil_div(const T n, const T d) {
    assert(d != 0);
    return n / d + static_cast<T>((n ^ d) >= 0 && n % d != 0);
}

template<typename T> void uniq(vector<T> &v){
    sort(v.begin(),v.end());
    v.erase(unique(v.begin(),v.end()),v.end());
}

template <typename T, typename U> inline bool chmin(T &x, U y) { return (y < x) ? (x = y, true) : false; }

template <typename T, typename U> inline bool chmax(T &x, U y) { return (x < y) ? (x = y, true) : false; }

template<typename T> inline bool range(T l, T x, T r){ return l <= x && x < r; }

} // namespace noya2
#line 8 "/Users/noya2/Desktop/Noya2_library/template/template.hpp"

#define rep(i,n) for (int i = 0; i < (int)(n); i++)
#define repp(i,m,n) for (int i = (m); i < (int)(n); i++)
#define reb(i,n) for (int i = (int)(n-1); i >= 0; i--)
#define all(v) (v).begin(),(v).end()

using ll = long long;
using ld = long double;
using uint = unsigned int;
using ull = unsigned long long;
using pii = pair<int,int>;
using pll = pair<ll,ll>;
using pil = pair<int,ll>;
using pli = pair<ll,int>;

namespace noya2{

/*　~ (. _________ . /)　*/

}

using namespace noya2;


#line 2 "c.cpp"

namespace ebi {

template <class F, F (*merge)(F, F), F (*id)()> struct dual_segtree {
  private:
    void all_apply(int i, F f) {
        d[i] = merge(f, d[i]);
    }

    void push(int i) {
        assert(i < sz);
        all_apply(2 * i, d[i]);
        all_apply(2 * i + 1, d[i]);
        d[i] = id();
    }

  public:
    dual_segtree(int n_) : dual_segtree(std::vector<F>(n_, id())) {}

    dual_segtree(const std::vector<F> &a)
        : n(a.size()),
          sz(std::bit_ceil(a.size())),
          lg2(std::countr_zero((unsigned int)(sz))) {
        d = std::vector<F>(2 * sz, id());
        for (int i : std::views::iota(sz, sz + n)) {
            d[i] = a[i - sz];
        }
    }

    void apply(int l, int r, F f) {
        assert(0 <= l && l <= r && r <= n);
        if (l == r) return;

        l += sz;
        r += sz;

        for (int i : std::views::iota(1, lg2 + 1) | std::views::reverse) {
            if (((l >> i) << i) != l) push(l >> i);
            if (((r >> i) << i) != r) push((r - 1) >> i);
        }

        while (l < r) {
            if (l & 1) all_apply(l++, f);
            if (r & 1) all_apply(--r, f);
            l >>= 1;
            r >>= 1;
        }
    }

    F get(int p) {
        assert(0 <= p && p < n);
        p += sz;
        for (int i : std::views::iota(1, lg2 + 1) | std::views::reverse) {
            push(p >> i);
        }
        return d[p];
    }

  private:
    int n, sz, lg2;
    std::vector<F> d;
};

}  // namespace ebi

int op(int a, int b){
    return min(a,b);
}
int e(){
    return iinf;
}

void solve(){
    int h, w; in(h,w);
    vector<string> a(h); in(a);
    vector<int> dp(w,0);
    reb(i,h-1){
        vector<int> ng;
        ng.emplace_back(-1);
        rep(j,w){
            if (a[i][j] == '#'){
                ng.emplace_back(j);
            }
        }
        ng.emplace_back(w);
        auto get = [&](int j){
            auto ite = lower_bound(all(ng),j);
            if (*ite == j) return pii(iinf,-iinf);
            return pii(*prev(ite),*ite);
        };
        ebi::dual_segtree<int,op,e> down(w), hor(w), up(w);
        rep(j,w){
            auto [L, R] = get(j);
            if (L == iinf) continue;
            // (L, R)
            // [l, r]
            int l = max(L+1,j-dp[j]);
            int r = min(R-1,j+dp[j]);
            down.apply(L+1,l,dp[j]+l);
            hor.apply(l,r+1,dp[j]);
            up.apply(r+1,R,dp[j]-r);
        }
        rep(j,w){
            dp[j] = min({-j+down.get(j),hor.get(j),j+up.get(j)});
        }
    }
    rep(j,w) out(dp[j]);
}

int main(){
    int t = 1; //in(t);
    while (t--) { solve(); }
}
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