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Submission #1029355

# Submission time Handle Problem Language Result Execution time Memory
1029355 2024-07-20T17:48:43 Z vjudge1 Luxury burrow (IZhO13_burrow) C++17
100 / 100
 334 ms 16188 KB 
#include <bits/stdc++.h>
#include <ext/pb_ds/assoc_container.hpp> 
 
#pragma GCC target("avx,avx2,fma")
#pragma GCC optimize("Ofast,unroll-loops")
 
using namespace std;
using namespace __gnu_pbds;
 
#define pb push_back
#define all(x) x.begin(),x.end()
#define rall(x) x.rbegin(),x.rend()
#define f first
#define s second
#define int long long
#define pii pair<int,int>
#define ar array
 
template<class T>bool umax(T &a,T b){if(a<b){a=b;return true;}return false;}
template<class T>bool umin(T &a,T b){if(b<a){a=b;return true;}return false;}
 
typedef tree<int, null_type, less_equal<int>, rb_tree_tag,
 tree_order_statistics_node_update> ordered_set;
 
const int inf = 1e17 + 7;
const int mod = 1e9 + 7;
const int N = 3e5 + 5;
const int md = 998244353;

int binpow(int a, int b){
	if(b == 0)return 1;
	if(b % 2 == 0){
		int c = binpow(a,b/2);
		return (c*c)%mod;
	}
	return (binpow(a,b-1)*a)%mod;
}

int divi(int a, int b){
	return (a*(binpow(b,mod-2)))%mod;
}

int n,m,k;
vector<int>l(1005), r(1005);

void solve(){
	
	cin >> n >> m >> k;
	
	int arr[n+1][m+1];
	for(int i = 0;i<n;i++)
		for(int j = 0;j<m;j++)
			cin >> arr[i][j];
		
	int area = 0, ans = -1;
	int l1 = 1, r1 = 1e9;
	
	while(l1<=r1){
		int mid = (l1+r1)/2;
		
		int dp[n+1][m+1]{};
		for(int i = n-1;i>=0;i--)
			for(int j = 0;j<m;j++){
				if(arr[i][j] >= mid)dp[i][j] = dp[i+1][j] + 1;
				else dp[i][j] = 0;
		}
		
		int mx = -1;
		for(int i = 0;i<n;i++){
			for(int j = 0;j<m;j++){
				l[j] = j - 1;
				while(l[j] >= 0 && dp[i][l[j]] >= dp[i][j])l[j] = l[l[j]];
			}
			
			for(int j = m - 1;j>=0;j--){
				r[j] = j + 1;
				while(r[j] < m && dp[i][r[j]] >= dp[i][j])r[j] = r[r[j]];
				umax(mx, (r[j]-l[j]-1)*dp[i][j]);
			}
		}
		
		if(mx >= k){
			l1 = mid + 1;
			area = mx;
			ans = mid;
		}
		else{
			r1 = mid - 1;
		}
	}
	
	cout << ans << " " << area << "\n";
	
	
	
}
/*
2
2
2 1
4
2 3 1 4

 */
 signed main()
{
//	freopen("seq.in", "r", stdin);
//  freopen("seq.out", "w", stdout);
	ios_base::sync_with_stdio(0);cin.tie(NULL);cout.tie(NULL);
	int tt=1;//cin>>tt;
	while(tt--)solve();
 
}

Subtask #1
100.0 / 100.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 344 KB Output is correct
2 Correct 0 ms 348 KB Output is correct
3 Correct 0 ms 348 KB Output is correct
4 Correct 0 ms 348 KB Output is correct
5 Correct 0 ms 348 KB Output is correct
6 Correct 1 ms 348 KB Output is correct
7 Correct 1 ms 348 KB Output is correct
8 Correct 3 ms 624 KB Output is correct
9 Correct 5 ms 784 KB Output is correct
10 Correct 14 ms 860 KB Output is correct
11 Correct 24 ms 1372 KB Output is correct
12 Correct 17 ms 1256 KB Output is correct
13 Correct 23 ms 1116 KB Output is correct
14 Correct 42 ms 2908 KB Output is correct
15 Correct 44 ms 2908 KB Output is correct
16 Correct 45 ms 2904 KB Output is correct
17 Correct 48 ms 4368 KB Output is correct
18 Correct 119 ms 5980 KB Output is correct
19 Correct 151 ms 8020 KB Output is correct
20 Correct 244 ms 10340 KB Output is correct
21 Correct 233 ms 12952 KB Output is correct
22 Correct 322 ms 15952 KB Output is correct
23 Correct 334 ms 16188 KB Output is correct
24 Correct 208 ms 12372 KB Output is correct
25 Correct 245 ms 15952 KB Output is correct