#472175 (C++17) No.866 レベルKの正方形

• 問題: No.866 レベルKの正方形
• ユーザー: uenoku
• 提出日時: 2020-04-28 22:08:39
• 言語: C++17 (gcc 13.3.0 + boost 1.87.0)
• 結果: TLE
• 実行時間: -
• コード長: 2,167 bytes
• コンパイル時間: 3,837 ms
• コンパイル使用メモリ: 218,008 KB
• 最終ジャッジ日時: 2025-01-10 03:03:28
• ジャッジサーバーID （参考情報）: judge1 / judge3

ファイルパターン	結果
sample	AC * 3
other	AC * 8 TLE * 14

ソースコード

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#pragma GCC optimize("Ofast")
#pragma GCC target("avx,avx2,fma")
#include <bits/stdc++.h>
#define rep(i, n) for (lli i = 0; i < (n); i++)
#define rrep(i, n) for (lli i = (n)-1; i >= 0; i--)
using namespace std;
using lli = long long int;
void YESNO(bool), YesNo(bool);
template <class T1, class T2>
bool chmin(T1 &l, const T2 &r);
template <class T1, class T2>
bool chmax(T1 &l, const T2 &r);
int c[2005][2005];
int sum[26][2005][2005] = {};
inline int f(int l, int i, int j, int p)
{
    return sum[l][i + p][j + p] - sum[l][i + p][j] - sum[l][i][j + p] + sum[l][i][j];
}
int h, w, k;
int calc(int i, int j, int p)
{
    // [up, n)でp種類以上
    int up1 = min(h - i, w - j) + 1;
    int low1 = 0;
    const int h = h;
    const int w = w;
    const int k = k;
    while (up1 - low1 > 1)
    {
        int mid = (up1 + low1) / 2;
        int cnt = 0;
        rep(l, 26)
            cnt += (f(l, i, j, mid) >= 1);
        (cnt >= p ? up1 : low1) = mid;
    }
    if (up1 == 0)
        return 0;
    int up2 = up1;
    int low2 = 0;
    p--;
    while (up2 - low2 > 1)
    {
        int mid = (up2 + low2) / 2;
        int cnt = 0;
        rep(l, 26)
            cnt += (f(l, i, j, mid) >= 1);
        (cnt >= p ? up2 : low2) = mid;
    }
    return up1 - up2;
}
int main()
{
    cin >> h >> w >> k;
    rep(i, h) rep(j, w)
    {
        char ch;
        cin >> ch;
        c[i][j] = ch - 'a';
    }
    rep(l, 26)
    {
        rep(i, h) rep(j, w)
            sum[l][i + 1][j + 1] = sum[l][i][j + 1] + sum[l][i + 1][j] - sum[l][i][j] + int(c[i][j] == l);
    }
    int ret = 0;
    rep(i, h) rep(j, w)
    {
        // cout << i << " " << j << " " << calc(i, j, k) << endl;
        // cout << i << " " << j << " " << calc(i, j, k + 1) << endl;
        ret += calc(i, j, k + 1);
    }
    cout << ret << endl;
}
// -- lib
void YESNO(bool b) { cout << (b ? "YES" : "NO") << endl; }
void YesNo(bool b) { cout << (b ? "Yes" : "No") << endl; }
template <class T1, class T2>
bool chmin(T1 &l, const T2 &r)
{
    return (l > r) ? (l = r, true) : false;
}
template <class T1, class T2>
bool chmax(T1 &l, const T2 &r)
{
    return (l < r) ? (l = r, true) : false;
}
 
 
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