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Submission #709896

# Submission time Handle Problem Language Result Execution time Memory
709896 2023-03-14T18:52:38 Z rainboy Sandcastle 2 (JOI22_ho_t5) C
100 / 100
 1100 ms 18580 KB 
#include <stdio.h>
#include <string.h>

#define NM	50000

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

int min(int a, int b) { return a < b ? a : b; }

int aa[NM], bb[NM], dd[NM], bad[3][3][3][3][NM], cc[3][3][NM], n, m;

int count(int il, int ir, int j, int y, int z) {
	int i, w, x, cnt;

	if (ir - il < 3) {
		cnt = 0;
		for (i = il; i <= ir; i++) {
			w = min(i - il, 2), x = min(ir - i, 2);
			if (bad[w][x][y][z][i * m + j])
				cnt++;
		}
	} else {
		cnt = 0;
		for (i = il; i < il + 2; i++)
			if (bad[i - il][2][y][z][i * m + j])
				cnt++;
		for (i = ir - 1; i <= ir; i++)
			if (bad[2][ir - i][y][z][i * m + j])
				cnt++;
		cnt += cc[y][z][(ir - 2) * m + j] - cc[y][z][(il + 1) * m + j];
	}
	return cnt;
}

int main() {
	static int dp[3][3][2], dq[3][3][2];
	int h, h_, i, j, i_, j_, i1, j1, il, jl, ir, jr, ij, ij_, ij1, k, w, x, y, y_, z, z_, c, c_, tmp, ans;

	scanf("%d%d", &n, &m);
	for (i = 0; i < n; i++)
		for (j = 0; j < m; j++)
			scanf("%d", &aa[i * m + j]);
	if (n > m) {
		for (ij = 0; ij < n * m; ij++) {
			i = ij / m, j = ij % m;
			bb[j * n + i] = aa[i * m + j];
		}
		tmp = n, n = m, m = tmp;
		memcpy(aa, bb, n * m * sizeof *bb);
	}
	for (i = 0; i < n; i++)
		for (j = 0; j < m; j++) {
			ij = i * m + j;
			for (w = 0; w < 3 && (il = i - w) >= 0; w++)
				for (x = 0; x < 3 && (ir = i + x) < n; x++)
					for (y = 0; y < 3 && (jl = j - y) >= 0; y++)
						for (z = 0; z < 3 && (jr = j + z) < m; z++) {
							k = 0;
							for (h = 0; h < 4; h++) {
								i_ = i + di[h], j_ = j + dj[h], ij_ = i_ * m + j_;
								if (i_ >= il && i_ <= ir && j_ >= jl && j_ <= jr && aa[ij_] > aa[ij]) {
									k++;
									for (h_ = 0; h_ < 4; h_++) {
										i1 = i_ + di[h_], j1 = j_ + dj[h_], ij1 = i1 * m + j1;
										if (i1 >= il && i1 <= ir && j1 >= jl && j1 <= jr && aa[ij_] > aa[ij1] && aa[ij1] > aa[ij]) {
											k--;
											break;
										}
									}
								}
							}
							if (k != 1) {
								bad[w][x][y][z][ij] = 1;
								if (w == 2 && x == 2)
									cc[y][z][ij] = 1;
							}
						}
		}
	for (y = 0; y < 3; y++)
		for (z = 0; z < 3; z++)
			for (ij = m; ij < n * m; ij++)
				cc[y][z][ij] += cc[y][z][ij - m];
	ans = 0;
	for (il = 0; il < n; il++)
		for (ir = il; ir < n; ir++) {
			memset(dp, 0, sizeof dp);
			for (j = 0; j < m; j++) {
				memset(dq, 0, sizeof dq);
				c = count(il, ir, j, 0, 0);
				if (c < 2)
					dq[0][0][c]++;
				c = count(il, ir, j, 0, 1);
				if (c < 2)
					dq[0][1][c]++;
				c = count(il, ir, j, 0, 2);
				if (c < 2)
					dq[0][2][c]++;
				for (y = 0; y < 3; y++)
					for (z = 0; z < 3; z++)
						for (c = 0; c < 2; c++) {
							int v = dp[y][z][c];

							if (v == 0)
								continue;
							if (z > 0) {
								y_ = min(y + 1, 2), z_ = z - 1, c_ = c + count(il, ir, j, y_, z_);
								if (c_ < 2)
									dq[y_][z_][c_] += v;
							}
							if (z == 2) {
								y_ = min(y + 1, 2), z_ = z, c_ = c + count(il, ir, j, y_, z_);
								if (c_ < 2)
									dq[y_][z_][c_] += v;
							}
						}
				memcpy(dp, dq, sizeof dq);
				ans += dp[0][0][1] + dp[1][0][1] + dp[2][0][1];
			}
		}
	printf("%d\n", ans);
	return 0;
}

Compilation message

Main.c: In function 'main':
Main.c:40:2: warning: ignoring return value of 'scanf' declared with attribute 'warn_unused_result' [-Wunused-result]
   40 |  scanf("%d%d", &n, &m);
      |  ^~~~~~~~~~~~~~~~~~~~~
Main.c:43:4: warning: ignoring return value of 'scanf' declared with attribute 'warn_unused_result' [-Wunused-result]
   43 |    scanf("%d", &aa[i * m + j]);
      |    ^~~~~~~~~~~~~~~~~~~~~~~~~~~

Subtask #1
9.0 / 9.0

# Verdict Execution time Memory Grader output
1 Correct 0 ms 212 KB Output is correct
2 Correct 20 ms 1084 KB Output is correct
3 Correct 20 ms 2544 KB Output is correct
4 Correct 21 ms 1480 KB Output is correct
5 Correct 22 ms 2240 KB Output is correct
6 Correct 25 ms 2624 KB Output is correct

Subtask #2
10.0 / 10.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 596 KB Output is correct
2 Correct 1 ms 596 KB Output is correct
3 Correct 1 ms 340 KB Output is correct
4 Correct 1 ms 468 KB Output is correct
5 Correct 1 ms 596 KB Output is correct
6 Correct 1 ms 596 KB Output is correct

Subtask #3
5.0 / 5.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 596 KB Output is correct
2 Correct 1 ms 596 KB Output is correct
3 Correct 1 ms 340 KB Output is correct
4 Correct 1 ms 468 KB Output is correct
5 Correct 1 ms 596 KB Output is correct
6 Correct 1 ms 596 KB Output is correct
7 Correct 1 ms 340 KB Output is correct
8 Correct 1 ms 340 KB Output is correct
9 Correct 8 ms 1128 KB Output is correct
10 Correct 7 ms 468 KB Output is correct
11 Correct 1 ms 340 KB Output is correct
12 Correct 2 ms 340 KB Output is correct
13 Correct 6 ms 1108 KB Output is correct
14 Correct 6 ms 832 KB Output is correct
15 Correct 8 ms 1176 KB Output is correct
16 Correct 8 ms 1108 KB Output is correct

Subtask #4
56.0 / 56.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 596 KB Output is correct
2 Correct 1 ms 596 KB Output is correct
3 Correct 1 ms 340 KB Output is correct
4 Correct 1 ms 468 KB Output is correct
5 Correct 1 ms 596 KB Output is correct
6 Correct 1 ms 596 KB Output is correct
7 Correct 1 ms 340 KB Output is correct
8 Correct 1 ms 340 KB Output is correct
9 Correct 8 ms 1128 KB Output is correct
10 Correct 7 ms 468 KB Output is correct
11 Correct 1 ms 340 KB Output is correct
12 Correct 2 ms 340 KB Output is correct
13 Correct 6 ms 1108 KB Output is correct
14 Correct 6 ms 832 KB Output is correct
15 Correct 8 ms 1176 KB Output is correct
16 Correct 8 ms 1108 KB Output is correct
17 Correct 3 ms 340 KB Output is correct
18 Correct 38 ms 3072 KB Output is correct
19 Correct 29 ms 2676 KB Output is correct
20 Correct 72 ms 1056 KB Output is correct
21 Correct 30 ms 1600 KB Output is correct
22 Correct 33 ms 2912 KB Output is correct
23 Correct 31 ms 2900 KB Output is correct
24 Correct 40 ms 2436 KB Output is correct
25 Correct 46 ms 3096 KB Output is correct
26 Correct 44 ms 2996 KB Output is correct
27 Correct 43 ms 3000 KB Output is correct
28 Correct 44 ms 3028 KB Output is correct

Subtask #5
20.0 / 20.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 596 KB Output is correct
2 Correct 1 ms 596 KB Output is correct
3 Correct 1 ms 340 KB Output is correct
4 Correct 1 ms 468 KB Output is correct
5 Correct 1 ms 596 KB Output is correct
6 Correct 1 ms 596 KB Output is correct
7 Correct 1 ms 340 KB Output is correct
8 Correct 1 ms 340 KB Output is correct
9 Correct 8 ms 1128 KB Output is correct
10 Correct 7 ms 468 KB Output is correct
11 Correct 1 ms 340 KB Output is correct
12 Correct 2 ms 340 KB Output is correct
13 Correct 6 ms 1108 KB Output is correct
14 Correct 6 ms 832 KB Output is correct
15 Correct 8 ms 1176 KB Output is correct
16 Correct 8 ms 1108 KB Output is correct
17 Correct 3 ms 340 KB Output is correct
18 Correct 38 ms 3072 KB Output is correct
19 Correct 29 ms 2676 KB Output is correct
20 Correct 72 ms 1056 KB Output is correct
21 Correct 30 ms 1600 KB Output is correct
22 Correct 33 ms 2912 KB Output is correct
23 Correct 31 ms 2900 KB Output is correct
24 Correct 40 ms 2436 KB Output is correct
25 Correct 46 ms 3096 KB Output is correct
26 Correct 44 ms 2996 KB Output is correct
27 Correct 43 ms 3000 KB Output is correct
28 Correct 44 ms 3028 KB Output is correct
29 Correct 23 ms 1236 KB Output is correct
30 Correct 263 ms 18260 KB Output is correct
31 Correct 462 ms 18536 KB Output is correct
32 Correct 37 ms 2688 KB Output is correct
33 Correct 1100 ms 5592 KB Output is correct
34 Correct 387 ms 9164 KB Output is correct
35 Correct 281 ms 10268 KB Output is correct
36 Correct 443 ms 15220 KB Output is correct
37 Correct 447 ms 18388 KB Output is correct
38 Correct 504 ms 18508 KB Output is correct
39 Correct 437 ms 18420 KB Output is correct
40 Correct 476 ms 18580 KB Output is correct
41 Correct 446 ms 18480 KB Output is correct
42 Correct 481 ms 18576 KB Output is correct
43 Correct 445 ms 18436 KB Output is correct
44 Correct 459 ms 18576 KB Output is correct