結果

問題 No.2456 Stamp Art
ユーザー siganaisiganai
提出日時 2023-09-17 13:51:58
言語 C++17
(gcc 12.3.0 + boost 1.83.0)
結果
AC  
実行時間 867 ms / 5,000 ms
コード長 5,423 bytes
コンパイル時間 2,330 ms
コンパイル使用メモリ 210,244 KB
実行使用メモリ 38,964 KB
最終ジャッジ日時 2024-07-04 09:17:32
合計ジャッジ時間 16,617 ms
ジャッジサーバーID
（参考情報） 		judge2 / 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 738 ms
38,964 KB
testcase_04 AC 2 ms
6,940 KB
testcase_05 AC 2 ms
6,940 KB
testcase_06 AC 764 ms
38,832 KB
testcase_07 AC 789 ms
38,960 KB
testcase_08 AC 721 ms
38,832 KB
testcase_09 AC 825 ms
38,964 KB
testcase_10 AC 847 ms
38,840 KB
testcase_11 AC 772 ms
38,840 KB
testcase_12 AC 763 ms
38,836 KB
testcase_13 AC 861 ms
38,964 KB
testcase_14 AC 867 ms
38,960 KB
testcase_15 AC 758 ms
38,832 KB
testcase_16 AC 328 ms
21,104 KB
testcase_17 AC 2 ms
5,376 KB
testcase_18 AC 2 ms
5,376 KB
testcase_19 AC 192 ms
26,880 KB
testcase_20 AC 777 ms
38,832 KB
testcase_21 AC 747 ms
35,584 KB
testcase_22 AC 855 ms
38,964 KB
testcase_23 AC 11 ms
5,376 KB
testcase_24 AC 26 ms
6,296 KB
testcase_25 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

ソースコード

diff # 

//#pragma GCC target("avx,avx2")
//#pragma GCC optimize("O3")
//#pragma GCC optimize("unroll-loops")
#include<bits/stdc++.h>
#ifdef LOCAL
#include <debug.hpp>
#define debug(...) debug_print::multi_print(#__VA_ARGS__, __VA_ARGS__)
#else
#define debug(...) (static_cast<void>(0))
#endif
using namespace std;
using ll = long long;
using ld = long double;
using pll = pair<ll, ll>;
using pii = pair<int, int>;
using vi = vector<int>;
using vvi = vector<vi>;
using vvvi = vector<vvi>;
using vl = vector<ll>;
using vvl = vector<vl>;
using vvvl = vector<vvl>;
using vpii = vector<pii>;
using vpll = vector<pll>;
using vs = vector<string>;
template<class T> using pq = priority_queue<T, vector<T>, greater<T>>;
#define overload4(_1, _2, _3, _4, name, ...) name
#define overload3(a,b,c,name,...) name
#define rep1(n) for (ll UNUSED_NUMBER = 0; UNUSED_NUMBER < (n); ++UNUSED_NUMBER)
#define rep2(i, n) for (ll i = 0; i < (n); ++i)
#define rep3(i, a, b) for (ll i = (a); i < (b); ++i)
#define rep4(i, a, b, c) for (ll i = (a); i < (b); i += (c))
#define rep(...) overload4(__VA_ARGS__, rep4, rep3, rep2, rep1)(__VA_ARGS__)
#define rrep1(n) for(ll i = (n) - 1;i >= 0;i--)
#define rrep2(i,n) for(ll i = (n) - 1;i >= 0;i--)
#define rrep3(i,a,b) for(ll i = (b) - 1;i >= (a);i--)
#define rrep4(i,a,b,c) for(ll i = (a) + ((b)-(a)-1) / (c) * (c);i >= (a);i -= c)
#define rrep(...) overload4(__VA_ARGS__, rrep4, rrep3, rrep2, rrep1)(__VA_ARGS__)
#define all1(i) begin(i) , end(i)
#define all2(i,a) begin(i) , begin(i) + a
#define all3(i,a,b) begin(i) + a , begin(i) + b
#define all(...) overload3(__VA_ARGS__, all3, all2, all1)(__VA_ARGS__)
#define sum(...) accumulate(all(__VA_ARGS__),0LL)
template<class T> bool chmin(T &a, const T &b){ if(a > b){ a = b; return 1; } else return 0; }
template<class T> bool chmax(T &a, const T &b){ if(a < b){ a = b; return 1; } else return 0; }
template<class T> auto min(const T& a){return *min_element(all(a));}
template<class T> auto max(const T& a){return *max_element(all(a));}
template<class... Ts> void in(Ts&... t);
#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 CHR(...) char __VA_ARGS__; in(__VA_ARGS__)
#define DBL(...) double __VA_ARGS__; in(__VA_ARGS__)
#define LD(...) ld __VA_ARGS__; in(__VA_ARGS__)
#define VEC(type, name, size) vector<type> name(size); in(name)
#define VV(type, name, h, w) vector<vector<type>> name(h, vector<type>(w)); in(name)
ll intpow(ll a, ll b){ ll ans = 1; while(b){if(b & 1) ans *= a; a *= a; b /= 2;} return ans;}
ll modpow(ll a, ll b, ll p){ ll ans = 1; a %= p;if(a < 0) a += p;while(b){ if(b & 1) (ans *= a) %= p; (a *= a) %= p; b /= 2; } return ans; }
ll GCD(ll a,ll b) { if(a == 0 || b == 0) return 0; if(a % b == 0) return b; else return GCD(b,a%b);}
ll LCM(ll a,ll b) { if(a == 0) return b; if(b == 0) return a;return a / GCD(a,b) * b;}
void Yes() {cout << "Yes\n";return;}
void No() {cout << "No\n";return;}
void YES() {cout << "YES\n";return;}
void NO() {cout << "NO\n";return;}
namespace IO{
#define VOID(a) decltype(void(a))
struct setting{ setting(){cin.tie(nullptr); ios::sync_with_stdio(false);fixed(cout); cout.precision(12);}} setting;
template<int I> struct P : P<I-1>{};
template<> struct P<0>{};
template<class T> void i(T& t){ i(t, P<3>{}); }
void i(vector<bool>::reference t, P<3>){ int a; i(a); t = a; }
template<class T> auto i(T& t, P<2>) -> VOID(cin >> t){ cin >> t; }
template<class T> auto i(T& t, P<1>) -> VOID(begin(t)){ for(auto&& x : t) i(x); }
template<class T, size_t... idx> void ituple(T& t, index_sequence<idx...>){in(get<idx>(t)...);}
template<class T> auto i(T& t, P<0>) -> VOID(tuple_size<T>{}){ituple(t, make_index_sequence<tuple_size<T>::value>{});} 
#undef VOID
}
#define unpack(a) (void)initializer_list<int>{(a, 0)...}
template<class... Ts> void in(Ts&... t){ unpack(IO :: i(t)); }

#undef unpack
static const double PI = 3.1415926535897932;
template <class F> struct REC {
    F f;
    REC(F &&f_) : f(forward<F>(f_)) {}
    template <class... Args> auto operator()(Args &&...args) const { return f(*this, forward<Args>(args)...); }};
//constexpr int mod = 1000000007;
constexpr int mod = 998244353;
int main() {
    INT(n,m);
    VEC(string,s,n);
    int ng = min(n,m) + 1,ok = 1;
    vvi imos(n+1,vi(m+1));
    int cnt = 0;
    rep(i,n) {
        rep(j,m) {
            if(s[i][j] == '#') {
                imos[i+1][j+1] = 1;
                cnt++;
            }
        }
    }
    rep(i,n+1) {
        rep(j,m) imos[i][j+1] += imos[i][j];
    }
    rep(j,m+1) {
        rep(i,n) imos[i+1][j] += imos[i][j];
    }
    while(ng - ok > 1) {
        int mid = (ng + ok) / 2;
        vvi cs(n+1,vi(m+1));
        rep(i,n-mid+1) {
            rep(j,m-mid+1) {
                if(imos[i+mid][j+mid] - imos[i][j+mid] - imos[i+mid][j] + imos[i][j] == mid * mid) {
                    cs[i][j]++;
                    cs[i+mid][j]--;
                    cs[i][j+mid]--;
                    cs[i+mid][j+mid]++;
                }
            }
        }
        rep(i,n+1) {
            rep(j,m) cs[i][j+1] += cs[i][j];
        }
        rep(j,m+1) {
            rep(i,n) cs[i+1][j] += cs[i][j];
        }
        int c = 0;
        rep(i,n+1) {
            rep(j,m+1) {
                if(cs[i][j]) c++;
            }
        }
        if(c == cnt) ok = mid;
        else ng = mid;
    }
    cout << ok << '\n';
}
0