結果
問題 | No.2456 Stamp Art |
ユーザー | 👑 AngrySadEight |
提出日時 | 2023-09-01 23:25:43 |
言語 | C++17 (gcc 12.3.0 + boost 1.83.0) |
結果 |
AC
|
実行時間 | 476 ms / 5,000 ms |
コード長 | 5,420 bytes |
コンパイル時間 | 5,445 ms |
コンパイル使用メモリ | 225,940 KB |
実行使用メモリ | 73,600 KB |
最終ジャッジ日時 | 2024-06-11 18:05:34 |
合計ジャッジ時間 | 13,368 ms |
ジャッジサーバーID (参考情報) |
judge1 / judge3 |
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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
5,248 KB |
testcase_01 | AC | 2 ms
5,376 KB |
testcase_02 | AC | 2 ms
5,376 KB |
testcase_03 | AC | 354 ms
73,600 KB |
testcase_04 | AC | 2 ms
5,376 KB |
testcase_05 | AC | 2 ms
5,376 KB |
testcase_06 | AC | 416 ms
73,472 KB |
testcase_07 | AC | 414 ms
73,600 KB |
testcase_08 | AC | 383 ms
73,600 KB |
testcase_09 | AC | 428 ms
73,600 KB |
testcase_10 | AC | 471 ms
73,600 KB |
testcase_11 | AC | 395 ms
73,472 KB |
testcase_12 | AC | 419 ms
73,600 KB |
testcase_13 | AC | 470 ms
73,600 KB |
testcase_14 | AC | 476 ms
73,600 KB |
testcase_15 | AC | 359 ms
73,600 KB |
testcase_16 | AC | 180 ms
38,528 KB |
testcase_17 | AC | 2 ms
5,376 KB |
testcase_18 | AC | 2 ms
5,376 KB |
testcase_19 | AC | 236 ms
50,432 KB |
testcase_20 | AC | 430 ms
73,600 KB |
testcase_21 | AC | 406 ms
64,000 KB |
testcase_22 | AC | 449 ms
73,600 KB |
testcase_23 | AC | 15 ms
7,168 KB |
testcase_24 | AC | 32 ms
9,216 KB |
testcase_25 | AC | 2 ms
5,376 KB |
ソースコード
#pragma GCC target("avx2") #pragma GCC optimize("O3") #pragma GCC optimize("unroll-loops") #include <algorithm> #include <atcoder/all> #include <bitset> #include <cassert> #include <cmath> #include <ctime> #include <functional> #include <iomanip> #include <iostream> #include <map> #include <queue> #include <random> #include <set> #include <stack> #include <string> #include <tuple> #include <unordered_map> #include <unordered_set> #include <utility> #include <vector> using namespace std; using namespace atcoder; typedef long long ll; #define rep(i, n) for (int i = 0; i < (int)(n); i++) #define repr(i, n) for (int i = (int)(n)-1; i >= 0; i--) #define repk(i, k, n) for (int i = k; i < (int)(n); i++) #define all(v) v.begin(), v.end() #define mod1 1000000007 #define mod2 998244353 #define mod3 100000007 #define vi vector<int> #define vs vector<string> #define vc vector<char> #define vl vector<ll> #define vb vector<bool> #define vvi vector<vector<int>> #define vvc vector<vector<char>> #define vvl vector<vector<ll>> #define vvb vector<vector<bool>> #define vvvi vector<vector<vector<int>>> #define vvvl vector<vector<vector<ll>>> #define pii pair<int, int> #define pil pair<int, ll> #define pli pair<ll, int> #define pll pair<ll, ll> #define vpii vector<pair<int, int>> #define vpll vector<pair<ll, ll>> #define vvpii vector<vector<pair<int, int>>> #define vvpll vector<vector<pair<ll, ll>>> using mint = modint998244353; template <typename T> void debug(T e) { cerr << e << endl; } template <typename T> void debug(vector<T> &v) { rep(i, v.size()) { cerr << v[i] << " "; } cerr << endl; } template <typename T> void debug(vector<vector<T>> &v) { rep(i, v.size()) { rep(j, v[i].size()) { cerr << v[i][j] << " "; } cerr << endl; } } template <typename T> void debug(vector<pair<T, T>> &v) { rep(i, v.size()) { cerr << v[i].first << " " << v[i].second << endl; } } template <typename T> void debug(set<T> &st) { for (auto itr = st.begin(); itr != st.end(); itr++) { cerr << *itr << " "; } cerr << endl; } template <typename T> void debug(multiset<T> &ms) { for (auto itr = ms.begin(); itr != ms.end(); itr++) { cerr << *itr << " "; } cerr << endl; } template <typename T> void debug(map<T, T> &mp) { for (auto itr = mp.begin(); itr != mp.end(); itr++) { cerr << itr->first << " " << itr->second << endl; } } void debug_out() { cerr << endl; } template <typename Head, typename... Tail> void debug_out(Head H, Tail... T) { cerr << H << " "; debug_out(T...); } ll my_pow(ll x, ll n, ll mod) { // 繰り返し二乗法.x^nをmodで割った余り. ll ret; if (n == 0) { ret = 1; } else if (n % 2 == 1) { ret = (x * my_pow((x * x) % mod, n / 2, mod)) % mod; } else { ret = my_pow((x * x) % mod, n / 2, mod); } return ret; } ll inv(ll x, ll mod) { return my_pow(x, mod - 2, mod); } int main() { ll H, W; cin >> H >> W; vector<string> S(H); for (ll i = 0; i < H; i++) { cin >> S[i]; } vector<vector<ll>> sum2d(H + 1, vector<ll>(W + 1, 0)); for (ll i = 0; i < H; i++) { for (ll j = 0; j < W; j++) { if (S[i][j] == '#') { sum2d[i + 1][j + 1] = sum2d[i + 1][j] + sum2d[i][j + 1] - sum2d[i][j] + 1; } else { sum2d[i + 1][j + 1] = sum2d[i + 1][j] + sum2d[i][j + 1] - sum2d[i][j]; } } } // debug(sum2d); vector<vector<ll>> sum2d_sub(H + 1, vector<ll>(W + 1, 0)); ll ok = 1; ll ng = min(H, W) + 1; while (ng - ok > 1) { for (ll i = 0; i <= H; i++) { for (ll j = 0; j <= W; j++) { sum2d_sub[i][j] = 0; } } // 塗れる場所があるなら塗ることにする.二次元いもす法. ll mid = (ok + ng) / 2; for (ll i = 0; i <= H - mid; i++) { for (ll j = 0; j <= W - mid; j++) { if (sum2d[i + mid][j + mid] - sum2d[i][j + mid] - sum2d[i + mid][j] + sum2d[i][j] == mid * mid) { sum2d_sub[i][j] += 1; sum2d_sub[i][j + mid] -= 1; sum2d_sub[i + mid][j] -= 1; sum2d_sub[i + mid][j + mid] += 1; } } } // debug(sum2d_sub); for (ll i = 0; i <= H; i++) { for (ll j = 0; j <= W; j++) { if (i >= 1) { sum2d_sub[i][j] += sum2d_sub[i - 1][j]; } if (j >= 1) { sum2d_sub[i][j] += sum2d_sub[i][j - 1]; } if (i >= 1 && j >= 1) { sum2d_sub[i][j] -= sum2d_sub[i - 1][j - 1]; } } } // debug(mid); // debug(sum2d_sub); bool pos = true; for (ll i = 0; i < H; i++) { for (ll j = 0; j < W; j++) { if (S[i][j] == '#' && sum2d_sub[i][j] == 0) { pos = false; } if (S[i][j] == '.' && sum2d_sub[i][j] >= 1) { pos = false; } } } if (pos) { ok = mid; } else { ng = mid; } } cout << ok << endl; }