제출 #1197244

#	제출 시각	아이디	문제	언어	결과	실행 시간	메모리
1197244		aykhn	Dango Maker (JOI18_dango_maker)	C++20	13 / 100	0 ms	400 KiB

dango_maker

#include <bits/stdc++.h>

using namespace std;

#define inf 0x3F3F3F3F

const int MXN = 3e3 + 5;

char a[MXN][MXN];
int used[MXN][MXN];

void _()
{
  int n, m;
  cin >> n >> m;
  for (int i = 0; i < n; i++) for (int j = 0; j < m; j++) cin >> a[i][j];
  auto check1 = [&](int x, int y)
  {
    if (y + 2 >= m) return false;
    return !used[x][y] && !used[x][y + 1] && !used[x][y + 2] && a[x][y] == 'R' && a[x][y + 1] == 'G' && a[x][y + 2] == 'W';
  };
  auto check2 = [&](int x, int y)
  {
    if (x + 2 >= n) return false;
    return !used[x][y] && !used[x + 1][y] && !used[x + 2][y] && a[x][y] == 'R' && a[x + 1][y] == 'G' && a[x + 2][y] == 'W';
  };
  auto cnt1 = [&](int x, int y)
  {
    int res = 0;
    while (x < n && y >= 0 && check1(x, y)) x++, y--, res++;
    return res;
  };
  auto cnt2 = [&](int x, int y)
  {
    int res = 0;
    while (x < n && y >= 0 && check2(x, y)) x++, y--, res++;
    return res;
  };
  auto mark1 = [&](int x, int y)
  {
    int res = 0;
    while (x < n && y >= 0 && check1(x, y)) used[x][y] = used[x][y + 1] = used[x][y + 2] = 1, x++, y--;
    return res;
  };
  auto mark2 = [&](int x, int y)
  {
    int res = 0;
    while (x < n && y >= 0 && check2(x, y)) used[x][y] = used[x + 1][y] = used[x + 2][y] = 1, x++, y--;
    return res;
  };
  int res = 0;
  for (int i = 0; i < n; i++)
  {
    for (int j = 0; j < m; j++)
    {
      int A = cnt1(i, j), B = cnt2(i, j);
      if (A >= B) res += A, mark1(i, j);
      else res += B, mark2(i, j);
    }
  }
  cout << res << '\n';
}

signed main()
{
  ios_base::sync_with_stdio(0);
  cin.tie(0);
  int t = 1;
  // cin >> t;
  while (t--) _();
}

• Subtask 1: 13 / 13
• Subtask 2: 0 / 20
• Subtask 3: 0 / 67