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Submission #47532

# Submission time Handle Problem Language Result Execution time Memory
47532 2018-05-05T02:49:52 Z aome Luxury burrow (IZhO13_burrow) C++17
100 / 100
 650 ms 58532 KB 
#include <bits/stdc++.h>

using namespace std;

const int N = 1005;

int n, m, K;
int res;
int l[N], r[N];
int a[N][N];
int b[N][N];
int f[N][N];

void solve(int x) {
	for (int i = 1; i <= m; ++i) {
		l[i] = i;
		while (l[i] > 1 && f[x][l[i] - 1] >= f[x][i]) l[i] = l[l[i] - 1];
	}
	for (int i = m; i >= 1; --i) {
		r[i] = i;
		while (r[i] < m && f[x][r[i] + 1] >= f[x][i]) r[i] = r[r[i] + 1];
	}
	for (int i = 1; i <= m; ++i) res = max(res, (r[i] - l[i] + 1) * f[x][i]);
}

void calc(int x) {
	for (int i = 1; i <= n; ++i) for (int j = 1; j <= m; ++j) b[i][j] = a[i][j] >= x;
	for (int i = 1; i <= n; ++i) for (int j = 1; j <= m; ++j) {
		if (b[i][j]) f[i][j] = f[i - 1][j] + 1; else f[i][j] = 0;
	}
	res = 0;
	for (int i = 1; i <= n; ++i) solve(i);
}

int main() {
	scanf("%d %d %d", &n, &m, &K);
	for (int i = 1; i <= n; ++i) {
		for (int j = 1; j <= m; ++j) {
			scanf("%d", &a[i][j]);
		}
	}
	int l = 1, r = 1e9;
	while (l < r) {
		int mid = (l + r + 1) >> 1; calc(mid);
		if (res >= K) l = mid; else r = mid - 1;
	}
	calc(l);
	cout << l << ' ' << res << '\n';
}

Compilation message

burrow.cpp: In function 'int main()':
burrow.cpp:36:7: warning: ignoring return value of 'int scanf(const char*, ...)', declared with attribute warn_unused_result [-Wunused-result]
  scanf("%d %d %d", &n, &m, &K);
  ~~~~~^~~~~~~~~~~~~~~~~~~~~~~~
burrow.cpp:39:9: warning: ignoring return value of 'int scanf(const char*, ...)', declared with attribute warn_unused_result [-Wunused-result]
    scanf("%d", &a[i][j]);
    ~~~~~^~~~~~~~~~~~~~~~

Subtask #1
100.0 / 100.0

# Verdict Execution time Memory Grader output
1 Correct 2 ms 376 KB Output is correct
2 Correct 2 ms 520 KB Output is correct
3 Correct 2 ms 544 KB Output is correct
4 Correct 2 ms 740 KB Output is correct
5 Correct 3 ms 896 KB Output is correct
6 Correct 3 ms 1160 KB Output is correct
7 Correct 2 ms 1160 KB Output is correct
8 Correct 10 ms 1980 KB Output is correct
9 Correct 12 ms 3196 KB Output is correct
10 Correct 30 ms 3572 KB Output is correct
11 Correct 58 ms 4652 KB Output is correct
12 Correct 30 ms 7836 KB Output is correct
13 Correct 38 ms 7836 KB Output is correct
14 Correct 111 ms 7836 KB Output is correct
15 Correct 86 ms 8228 KB Output is correct
16 Correct 101 ms 9456 KB Output is correct
17 Correct 91 ms 10992 KB Output is correct
18 Correct 265 ms 15092 KB Output is correct
19 Correct 263 ms 18112 KB Output is correct
20 Correct 587 ms 24924 KB Output is correct
21 Correct 506 ms 32400 KB Output is correct
22 Correct 648 ms 43124 KB Output is correct
23 Correct 650 ms 52936 KB Output is correct
24 Correct 393 ms 55016 KB Output is correct
25 Correct 401 ms 58532 KB Output is correct