oj.uz

답안 #1055566

# 제출 시각 아이디 문제 언어 결과 실행 시간 메모리
1055566 2024-08-12T21:57:57 Z MilosMilutinovic Sandcastle 2 (JOI22_ho_t5) C++14
71 / 100
 5000 ms 65600 KB 
#include <bits/stdc++.h>

using namespace std;

const int di[] = {1, -1, 0, 0};
const int dj[] = {0, 0, 1, -1};

const int L = 17;

vector<vector<int>> st[L][L];

vector<vector<long long>> f[1 << 4];

int logs[50005];

int Query(int x1, int y1, int x2, int y2) {
  int kx = logs[x2 - x1 + 1];
  int ky = logs[y2 - y1 + 1];
  return max({st[kx][ky][x1][y1], st[kx][ky][x2 - (1 << kx) + 1][y1], st[kx][ky][x1][y2 - (1 << ky) + 1],
            st[kx][ky][x2 - (1 << kx) + 1][y2 - (1 << ky) + 1]});
}

long long GetSum(int x1, int y1, int x2, int y2, int mask) {
  if (x1 > x2 || y1 > y2) {
    return 0LL;
  }
  long long res = f[mask][x2][y2];
  if (x1 > 0) {
    res -= f[mask][x1 - 1][y2];
  }
  if (y1 > 0) {
    res -= f[mask][x2][y1 - 1];
  }
  if (x1 > 0 && y1 > 0) {
    res += f[mask][x1 - 1][y1 - 1];
  }
  return res;
}

int main() {
  ios::sync_with_stdio(false);
  cin.tie(0);
  int n, m;
  cin >> n >> m;
  vector<vector<int>> a(n, vector<int>(m));
  for (int i = 0; i < n; i++) {
    for (int j = 0; j < m; j++) {
      cin >> a[i][j];
    }
  }
  if (n > m) {
    vector<vector<int>> b(m, vector<int>(n));
    for (int i = 0; i < n; i++) {
      for (int j = 0; j < m; j++) {
        b[j][i] = a[i][j];
      }
    }
    a = b;
    swap(n, m);
  }
  for (int i = 2; i <= max(n, m); i++) {
    logs[i] = logs[i >> 1] + 1;
  }
  for (int i = 0; i < L; i++) {
    for (int j = 0; j < L; j++) {
      st[i][j] = vector<vector<int>>(n, vector<int>(m));
    }
  }
  for (int mask = 0; mask < (1 << 4); mask++) {
    f[mask] = vector<vector<long long>>(n, vector<long long>(m));
  }
  for (int i = 0; i < n; i++) {
    for (int j = 0; j < m; j++) {
      st[0][0][i][j] = a[i][j];
    }
  }
  for (int k = 1; k < L; k++) {
    for (int i = 0; i + (1 << k) <= n; i++) {
      for (int j = 0; j < m; j++) {
        st[k][0][i][j] = max(st[k - 1][0][i][j], st[k - 1][0][i + (1 << (k - 1))][j]);
      }
    }
  }
  for (int k = 1; k < L; k++) {
    for (int t = 0; t < L; t++) {
      for (int i = 0; i < n; i++) {
        for (int j = 0; j + (1 << k) <= m; j++) {
          st[t][k][i][j] = max(st[t][k - 1][i][j], st[t][k - 1][i][j + (1 << (k - 1))]);
        }
      }
    }
  }
  for (int i = 0; i < n; i++) {
    for (int j = 0; j < m; j++) {
      for (int mask = 0; mask < (1 << 4); mask++) {
        if (i > 0) {
          f[mask][i][j] += f[mask][i - 1][j];
        }
        if (j > 0) {
          f[mask][i][j] += f[mask][i][j - 1];
        }
        if (i > 0 && j > 0) {
          f[mask][i][j] -= f[mask][i - 1][j - 1];
        }
        f[mask][i][j] -= a[i][j];
        int mx = 0;
        for (int d = 0; d < 4; d++) {
          if (mask >> d & 1) {
            int ni = i + di[d];
            int nj = j + dj[d];
            if (0 <= ni && ni < n && 0 <= nj && nj < m && a[ni][nj] < a[i][j]) {
              mx = max(mx, a[ni][nj]);
            }
          }
        }
        f[mask][i][j] += mx;
      }
    }
  }
  int res = 0;
  for (int x1 = 0; x1 < n; ++x1) {
    for (int y1 = 0; y1 < m; ++y1) {
      for (int x2 = x1; x2 < n; ++x2) {
        for (int y2 = y1; y2 < m; ++y2) {
          if (x1 == x2 && y1 == y2) {
            res += 1;
            continue;
          }
          long long s = 0;
          int mx = Query(x1, y1, x2, y2);
          if (x1 == x2) {
            {
              s += GetSum(x1, y1, x1, y1, 1 << 2);
            }
            {
              s += GetSum(x1, y2, x1, y2, 1 << 3);
            }
            if (y1 + 1 < y2) {
              s += GetSum(x1, y1 + 1, x1, y2 - 1, (1 << 2) + (1 << 3));
            }
          } else if (y1 == y2) {
            {
              s += GetSum(x1, y1, x1, y1, 1 << 0);
            }
            {
              s += GetSum(x2, y1, x2, y1, 1 << 1);
            }
            if (x1 + 1 < x2) {
              s += GetSum(x1 + 1, y1, x2 - 1, y1, (1 << 0) + (1 << 1));
            }
          } else {
            {
              s += GetSum(x1, y1, x1, y1, (1 << 0) + (1 << 2));
            }
            {
              s += GetSum(x1, y2, x1, y2, (1 << 0) + (1 << 3));
            }
            {
              s += GetSum(x2, y1, x2, y1, (1 << 1) + (1 << 2));
            }
            {
              s += GetSum(x2, y2, x2, y2, (1 << 1) + (1 << 3));
            }
            if (x1 + 1 < x2) {
              s += GetSum(x1 + 1, y1, x2 - 1, y1, (1 << 0) + (1 << 1) + (1 << 2));
              s += GetSum(x1 + 1, y2, x2 - 1, y2, (1 << 0) + (1 << 1) + (1 << 3));
            }
            if (y1 + 1 < y2) {
              s += GetSum(x1, y1 + 1, x1, y2 - 1, (1 << 2) + (1 << 3) + (1 << 0));
              s += GetSum(x2, y1 + 1, x2, y2 - 1, (1 << 2) + (1 << 3) + (1 << 1));
            }
            if (x1 + 1 < x2 && y1 + 1 < y2) {
              s += GetSum(x1 + 1, y1 + 1, x2 - 1, y2 - 1, (1 << 0) + (1 << 1) + (1 << 2) + (1 << 3));
            }
          }
          if (s == -mx) {
            res += 1;
          }
        }
      }
    }
  }
  cout << res << '\n';
  return 0;
}

Subtask #1
0 / 9.0

# 결과 실행 시간 메모리 Grader output
1 Correct 0 ms 348 KB Output is correct
2 Execution timed out 5098 ms 64220 KB Time limit exceeded
3 Halted 0 ms 0 KB -

Subtask #2
10.0 / 10.0

# 결과 실행 시간 메모리 Grader output
1 Correct 1 ms 600 KB Output is correct
2 Correct 0 ms 604 KB Output is correct
3 Correct 1 ms 604 KB Output is correct
4 Correct 1 ms 604 KB Output is correct
5 Correct 0 ms 604 KB Output is correct
6 Correct 0 ms 604 KB Output is correct

Subtask #3
5.0 / 5.0

# 결과 실행 시간 메모리 Grader output
1 Correct 1 ms 600 KB Output is correct
2 Correct 0 ms 604 KB Output is correct
3 Correct 1 ms 604 KB Output is correct
4 Correct 1 ms 604 KB Output is correct
5 Correct 0 ms 604 KB Output is correct
6 Correct 0 ms 604 KB Output is correct
7 Correct 12 ms 2396 KB Output is correct
8 Correct 10 ms 2396 KB Output is correct
9 Correct 12 ms 2652 KB Output is correct
10 Correct 12 ms 2652 KB Output is correct
11 Correct 10 ms 2392 KB Output is correct
12 Correct 10 ms 2412 KB Output is correct
13 Correct 12 ms 2664 KB Output is correct
14 Correct 6 ms 2140 KB Output is correct
15 Correct 12 ms 2656 KB Output is correct
16 Correct 14 ms 2652 KB Output is correct

Subtask #4
56.0 / 56.0

# 결과 실행 시간 메모리 Grader output
1 Correct 1 ms 600 KB Output is correct
2 Correct 0 ms 604 KB Output is correct
3 Correct 1 ms 604 KB Output is correct
4 Correct 1 ms 604 KB Output is correct
5 Correct 0 ms 604 KB Output is correct
6 Correct 0 ms 604 KB Output is correct
7 Correct 12 ms 2396 KB Output is correct
8 Correct 10 ms 2396 KB Output is correct
9 Correct 12 ms 2652 KB Output is correct
10 Correct 12 ms 2652 KB Output is correct
11 Correct 10 ms 2392 KB Output is correct
12 Correct 10 ms 2412 KB Output is correct
13 Correct 12 ms 2664 KB Output is correct
14 Correct 6 ms 2140 KB Output is correct
15 Correct 12 ms 2656 KB Output is correct
16 Correct 14 ms 2652 KB Output is correct
17 Correct 206 ms 9564 KB Output is correct
18 Correct 257 ms 9820 KB Output is correct
19 Correct 242 ms 9428 KB Output is correct
20 Correct 271 ms 10072 KB Output is correct
21 Correct 247 ms 10072 KB Output is correct
22 Correct 279 ms 10072 KB Output is correct
23 Correct 238 ms 9560 KB Output is correct
24 Correct 199 ms 8796 KB Output is correct
25 Correct 272 ms 10032 KB Output is correct
26 Correct 259 ms 10076 KB Output is correct
27 Correct 249 ms 9820 KB Output is correct
28 Correct 269 ms 10072 KB Output is correct

Subtask #5
0 / 20.0

# 결과 실행 시간 메모리 Grader output
1 Correct 1 ms 600 KB Output is correct
2 Correct 0 ms 604 KB Output is correct
3 Correct 1 ms 604 KB Output is correct
4 Correct 1 ms 604 KB Output is correct
5 Correct 0 ms 604 KB Output is correct
6 Correct 0 ms 604 KB Output is correct
7 Correct 12 ms 2396 KB Output is correct
8 Correct 10 ms 2396 KB Output is correct
9 Correct 12 ms 2652 KB Output is correct
10 Correct 12 ms 2652 KB Output is correct
11 Correct 10 ms 2392 KB Output is correct
12 Correct 10 ms 2412 KB Output is correct
13 Correct 12 ms 2664 KB Output is correct
14 Correct 6 ms 2140 KB Output is correct
15 Correct 12 ms 2656 KB Output is correct
16 Correct 14 ms 2652 KB Output is correct
17 Correct 206 ms 9564 KB Output is correct
18 Correct 257 ms 9820 KB Output is correct
19 Correct 242 ms 9428 KB Output is correct
20 Correct 271 ms 10072 KB Output is correct
21 Correct 247 ms 10072 KB Output is correct
22 Correct 279 ms 10072 KB Output is correct
23 Correct 238 ms 9560 KB Output is correct
24 Correct 199 ms 8796 KB Output is correct
25 Correct 272 ms 10032 KB Output is correct
26 Correct 259 ms 10076 KB Output is correct
27 Correct 249 ms 9820 KB Output is correct
28 Correct 269 ms 10072 KB Output is correct
29 Execution timed out 5050 ms 65600 KB Time limit exceeded
30 Halted 0 ms 0 KB -