oj.uz

Submission #937419

# Submission time Handle Problem Language Result Execution time Memory
937419 2024-03-04T03:29:56 Z GrindMachine Rectangles (IOI19_rect) C++17
72 / 100
 5000 ms 530576 KB 
#include <bits/stdc++.h>
#include <ext/pb_ds/assoc_container.hpp>
#include <ext/pb_ds/tree_policy.hpp>

using namespace std;
using namespace __gnu_pbds;

template<typename T> using Tree = tree<T, null_type, less<T>, rb_tree_tag, tree_order_statistics_node_update>;
typedef long long int ll;
typedef long double ld;
typedef pair<int,int> pii;
typedef pair<ll,ll> pll;

#define fastio ios_base::sync_with_stdio(false); cin.tie(NULL)
#define pb push_back
#define endl '\n'
#define sz(a) (int)a.size()
#define setbits(x) __builtin_popcountll(x)
#define ff first
#define ss second
#define conts continue
#define ceil2(x,y) ((x+y-1)/(y))
#define all(a) a.begin(), a.end()
#define rall(a) a.rbegin(), a.rend()
#define yes cout << "Yes" << endl
#define no cout << "No" << endl

#define rep(i,n) for(int i = 0; i < n; ++i)
#define rep1(i,n) for(int i = 1; i <= n; ++i)
#define rev(i,s,e) for(int i = s; i >= e; --i)
#define trav(i,a) for(auto &i : a)

template<typename T>
void amin(T &a, T b) {
    a = min(a,b);
}

template<typename T>
void amax(T &a, T b) {
    a = max(a,b);
}

#ifdef LOCAL
#include "debug.h"
#else
#define debug(x) 42
#endif

/*

read some solutions long back, remember some ideas from there

*/

const int MOD = 1e9 + 7;
const int N = 1e5 + 5;
const int inf1 = int(1e9) + 5;
const ll inf2 = ll(1e18) + 5;

#include "rect.h"

long long count_rectangles(std::vector<std::vector<int> > a) {
	int n = sz(a), m = sz(a[0]);
	if(n <= 2 or m <= 2) return 0;

	vector<pii> up[n][m];
	int ptr = 0;

	rep(j,m){
		stack<int> st;
		rep(i,n){
			bool eq = false;
			while(!st.empty() and a[i][j] >= a[st.top()][j]){
				int k = st.top();
				st.pop();
				if(a[i][j] == a[k][j]){
					eq = true;
				}
				if(i-k >= 2){
					up[i][j].pb({k,ptr++});
				}
			}

			if(!st.empty() and !eq){
				int k = st.top();
				if(i-k >= 2){
					up[i][j].pb({k,ptr++});
				}
			}

			st.push(i);
		}
	}

	vector<int> farthest(ptr);
	map<array<int,3>,int> mp;

	rev(j,m-1,0){
		rep(i,n){
			for(auto [k,ptr] : up[i][j]){
				array<int,3> ar = {j,k,i};
				array<int,3> want = {j+1,k,i};
				if(mp.count(want)){
					farthest[ptr] = farthest[mp[want]];
				}
				else{
					farthest[ptr] = j;
				}

				mp[ar] = ptr;
			}
		}
	}

	int prev_occ[m][m], first_occ[m][m];
	memset(prev_occ,-1,sizeof prev_occ);
	memset(first_occ,-1,sizeof first_occ);

	ll ans = 0;

	rep1(i,n-2){
		stack<int> st;
		vector<pii> good;
		rep(j,m){
			bool eq = false;
			while(!st.empty() and a[i][j] >= a[i][st.top()]){
				int k = st.top();
				st.pop();
				if(a[i][j] == a[i][k]){
					eq = true;
				}
				if(j-k >= 2){
					good.pb({k,j});
				}
			}

			// cout << j << endl;
			// cout << eq << endl;
			// auto st_copy = st;
			// while(!st_copy.empty()){
			// 	cout << st_copy.top() << " ";
			// 	st_copy.pop();
			// }
			// cout << endl;

			if(!st.empty() and !eq){
				int k = st.top();
				if(j-k >= 2){
					// cout << k << " " << j << endl;
					good.pb({k,j});
				}
			}

			st.push(j);
		}

		for(auto [l,r] : good){
			if(prev_occ[l][r] != i-1){
				first_occ[l][r] = i;
			}

			prev_occ[l][r] = i;

			for(auto [k,ptr] : up[i+1][l+1]){
				if(k >= first_occ[l][r]-1){
					if(farthest[ptr] >= r-1){
						ans++;
					}
				}
			}
		}
	}

	/*

	int oans = 0;

	rep1(i1,n-1){
		rep1(j1,m-1){
			for(int i2 = i1; i2 < n-1; ++i2){
				for(int j2 = j1; j2 < m-1; ++j2){
					bool ok = true;
					for(int r = i1; r <= i2; ++r){
						for(int c = j1; c <= j2; ++c){
							if(a[r][c] >= min({a[i1-1][c],a[i2+1][c],a[r][j1-1],a[r][j2+1]})){
								ok = false;
								break;
							}
						}
						if(!ok) break;
					}

					if(ok){
						oans++;
						cout << i1 << " " << j1 << " " << i2 << " " << j2 << endl;
					}
				}
			}
		}
	}
	
	*/
	
	// cout << ans << endl;
	// cout << oans << endl;
	// cout << endl;

	// assert(ans == oans);

	return ans;
}

Subtask #1
8.0 / 8.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 344 KB Output is correct
2 Correct 1 ms 348 KB Output is correct
3 Correct 1 ms 348 KB Output is correct
4 Correct 1 ms 348 KB Output is correct
5 Correct 1 ms 348 KB Output is correct
6 Correct 1 ms 348 KB Output is correct
7 Correct 0 ms 348 KB Output is correct
8 Correct 0 ms 348 KB Output is correct
9 Correct 1 ms 344 KB Output is correct
10 Correct 1 ms 348 KB Output is correct
11 Correct 1 ms 348 KB Output is correct
12 Correct 1 ms 348 KB Output is correct
13 Correct 0 ms 348 KB Output is correct
14 Correct 0 ms 348 KB Output is correct
15 Correct 0 ms 348 KB Output is correct
16 Correct 0 ms 348 KB Output is correct
17 Correct 0 ms 344 KB Output is correct
18 Correct 0 ms 348 KB Output is correct
19 Correct 1 ms 348 KB Output is correct
20 Correct 0 ms 344 KB Output is correct
21 Correct 0 ms 348 KB Output is correct

Subtask #2
7.0 / 7.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 344 KB Output is correct
2 Correct 1 ms 348 KB Output is correct
3 Correct 1 ms 348 KB Output is correct
4 Correct 1 ms 348 KB Output is correct
5 Correct 1 ms 348 KB Output is correct
6 Correct 1 ms 348 KB Output is correct
7 Correct 0 ms 348 KB Output is correct
8 Correct 0 ms 348 KB Output is correct
9 Correct 1 ms 344 KB Output is correct
10 Correct 1 ms 348 KB Output is correct
11 Correct 1 ms 348 KB Output is correct
12 Correct 1 ms 348 KB Output is correct
13 Correct 0 ms 348 KB Output is correct
14 Correct 0 ms 348 KB Output is correct
15 Correct 0 ms 348 KB Output is correct
16 Correct 0 ms 348 KB Output is correct
17 Correct 0 ms 344 KB Output is correct
18 Correct 0 ms 348 KB Output is correct
19 Correct 1 ms 348 KB Output is correct
20 Correct 0 ms 344 KB Output is correct
21 Correct 0 ms 348 KB Output is correct
22 Correct 3 ms 1112 KB Output is correct
23 Correct 3 ms 1112 KB Output is correct
24 Correct 3 ms 1112 KB Output is correct
25 Correct 1 ms 860 KB Output is correct
26 Correct 3 ms 1112 KB Output is correct
27 Correct 3 ms 1116 KB Output is correct
28 Correct 3 ms 1116 KB Output is correct
29 Correct 2 ms 600 KB Output is correct

Subtask #3
12.0 / 12.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 344 KB Output is correct
2 Correct 1 ms 348 KB Output is correct
3 Correct 1 ms 348 KB Output is correct
4 Correct 1 ms 348 KB Output is correct
5 Correct 1 ms 348 KB Output is correct
6 Correct 1 ms 348 KB Output is correct
7 Correct 0 ms 348 KB Output is correct
8 Correct 0 ms 348 KB Output is correct
9 Correct 1 ms 344 KB Output is correct
10 Correct 1 ms 348 KB Output is correct
11 Correct 1 ms 348 KB Output is correct
12 Correct 1 ms 348 KB Output is correct
13 Correct 0 ms 348 KB Output is correct
14 Correct 0 ms 348 KB Output is correct
15 Correct 0 ms 348 KB Output is correct
16 Correct 0 ms 348 KB Output is correct
17 Correct 3 ms 1112 KB Output is correct
18 Correct 3 ms 1112 KB Output is correct
19 Correct 3 ms 1112 KB Output is correct
20 Correct 1 ms 860 KB Output is correct
21 Correct 3 ms 1112 KB Output is correct
22 Correct 3 ms 1116 KB Output is correct
23 Correct 3 ms 1116 KB Output is correct
24 Correct 2 ms 600 KB Output is correct
25 Correct 0 ms 344 KB Output is correct
26 Correct 0 ms 348 KB Output is correct
27 Correct 1 ms 348 KB Output is correct
28 Correct 0 ms 344 KB Output is correct
29 Correct 0 ms 348 KB Output is correct
30 Correct 21 ms 5224 KB Output is correct
31 Correct 18 ms 5208 KB Output is correct
32 Correct 18 ms 5208 KB Output is correct
33 Correct 8 ms 3416 KB Output is correct
34 Correct 17 ms 5312 KB Output is correct
35 Correct 17 ms 5468 KB Output is correct
36 Correct 17 ms 5208 KB Output is correct
37 Correct 16 ms 5212 KB Output is correct

Subtask #4
22.0 / 22.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 344 KB Output is correct
2 Correct 1 ms 348 KB Output is correct
3 Correct 1 ms 348 KB Output is correct
4 Correct 1 ms 348 KB Output is correct
5 Correct 1 ms 348 KB Output is correct
6 Correct 1 ms 348 KB Output is correct
7 Correct 0 ms 348 KB Output is correct
8 Correct 0 ms 348 KB Output is correct
9 Correct 1 ms 344 KB Output is correct
10 Correct 1 ms 348 KB Output is correct
11 Correct 1 ms 348 KB Output is correct
12 Correct 1 ms 348 KB Output is correct
13 Correct 0 ms 348 KB Output is correct
14 Correct 0 ms 348 KB Output is correct
15 Correct 0 ms 348 KB Output is correct
16 Correct 0 ms 348 KB Output is correct
17 Correct 3 ms 1112 KB Output is correct
18 Correct 3 ms 1112 KB Output is correct
19 Correct 3 ms 1112 KB Output is correct
20 Correct 1 ms 860 KB Output is correct
21 Correct 3 ms 1112 KB Output is correct
22 Correct 3 ms 1116 KB Output is correct
23 Correct 3 ms 1116 KB Output is correct
24 Correct 2 ms 600 KB Output is correct
25 Correct 21 ms 5224 KB Output is correct
26 Correct 18 ms 5208 KB Output is correct
27 Correct 18 ms 5208 KB Output is correct
28 Correct 8 ms 3416 KB Output is correct
29 Correct 17 ms 5312 KB Output is correct
30 Correct 17 ms 5468 KB Output is correct
31 Correct 17 ms 5208 KB Output is correct
32 Correct 16 ms 5212 KB Output is correct
33 Correct 0 ms 344 KB Output is correct
34 Correct 0 ms 348 KB Output is correct
35 Correct 1 ms 348 KB Output is correct
36 Correct 0 ms 344 KB Output is correct
37 Correct 0 ms 348 KB Output is correct
38 Correct 114 ms 41776 KB Output is correct
39 Correct 188 ms 41796 KB Output is correct
40 Correct 114 ms 46644 KB Output is correct
41 Correct 124 ms 46524 KB Output is correct
42 Correct 264 ms 60896 KB Output is correct
43 Correct 267 ms 60640 KB Output is correct
44 Correct 263 ms 61008 KB Output is correct
45 Correct 250 ms 58068 KB Output is correct
46 Correct 82 ms 32340 KB Output is correct
47 Correct 114 ms 38224 KB Output is correct
48 Correct 259 ms 61916 KB Output is correct
49 Correct 251 ms 64336 KB Output is correct
50 Correct 125 ms 31712 KB Output is correct
51 Correct 139 ms 33876 KB Output is correct
52 Correct 242 ms 59824 KB Output is correct
53 Correct 244 ms 61016 KB Output is correct

Subtask #5
10.0 / 10.0

# Verdict Execution time Memory Grader output
1 Correct 28 ms 49756 KB Output is correct
2 Correct 22 ms 36184 KB Output is correct
3 Correct 27 ms 49500 KB Output is correct
4 Correct 1 ms 344 KB Output is correct
5 Correct 28 ms 49500 KB Output is correct
6 Correct 29 ms 49492 KB Output is correct
7 Correct 29 ms 49488 KB Output is correct
8 Correct 28 ms 49584 KB Output is correct
9 Correct 27 ms 49644 KB Output is correct
10 Correct 0 ms 348 KB Output is correct
11 Correct 1 ms 348 KB Output is correct

Subtask #6
13.0 / 13.0

# Verdict Execution time Memory Grader output
1 Correct 0 ms 344 KB Output is correct
2 Correct 0 ms 348 KB Output is correct
3 Correct 1 ms 348 KB Output is correct
4 Correct 0 ms 344 KB Output is correct
5 Correct 0 ms 348 KB Output is correct
6 Correct 0 ms 348 KB Output is correct
7 Correct 558 ms 202148 KB Output is correct
8 Correct 1357 ms 408140 KB Output is correct
9 Correct 1339 ms 409836 KB Output is correct
10 Correct 1340 ms 409832 KB Output is correct
11 Correct 145 ms 151924 KB Output is correct
12 Correct 318 ms 238420 KB Output is correct
13 Correct 357 ms 257348 KB Output is correct

Subtask #7
0 / 28.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 344 KB Output is correct
2 Correct 1 ms 348 KB Output is correct
3 Correct 1 ms 348 KB Output is correct
4 Correct 1 ms 348 KB Output is correct
5 Correct 1 ms 348 KB Output is correct
6 Correct 1 ms 348 KB Output is correct
7 Correct 0 ms 348 KB Output is correct
8 Correct 0 ms 348 KB Output is correct
9 Correct 1 ms 344 KB Output is correct
10 Correct 1 ms 348 KB Output is correct
11 Correct 1 ms 348 KB Output is correct
12 Correct 1 ms 348 KB Output is correct
13 Correct 0 ms 348 KB Output is correct
14 Correct 0 ms 348 KB Output is correct
15 Correct 0 ms 348 KB Output is correct
16 Correct 0 ms 348 KB Output is correct
17 Correct 3 ms 1112 KB Output is correct
18 Correct 3 ms 1112 KB Output is correct
19 Correct 3 ms 1112 KB Output is correct
20 Correct 1 ms 860 KB Output is correct
21 Correct 3 ms 1112 KB Output is correct
22 Correct 3 ms 1116 KB Output is correct
23 Correct 3 ms 1116 KB Output is correct
24 Correct 2 ms 600 KB Output is correct
25 Correct 21 ms 5224 KB Output is correct
26 Correct 18 ms 5208 KB Output is correct
27 Correct 18 ms 5208 KB Output is correct
28 Correct 8 ms 3416 KB Output is correct
29 Correct 17 ms 5312 KB Output is correct
30 Correct 17 ms 5468 KB Output is correct
31 Correct 17 ms 5208 KB Output is correct
32 Correct 16 ms 5212 KB Output is correct
33 Correct 114 ms 41776 KB Output is correct
34 Correct 188 ms 41796 KB Output is correct
35 Correct 114 ms 46644 KB Output is correct
36 Correct 124 ms 46524 KB Output is correct
37 Correct 264 ms 60896 KB Output is correct
38 Correct 267 ms 60640 KB Output is correct
39 Correct 263 ms 61008 KB Output is correct
40 Correct 250 ms 58068 KB Output is correct
41 Correct 82 ms 32340 KB Output is correct
42 Correct 114 ms 38224 KB Output is correct
43 Correct 259 ms 61916 KB Output is correct
44 Correct 251 ms 64336 KB Output is correct
45 Correct 125 ms 31712 KB Output is correct
46 Correct 139 ms 33876 KB Output is correct
47 Correct 242 ms 59824 KB Output is correct
48 Correct 244 ms 61016 KB Output is correct
49 Correct 28 ms 49756 KB Output is correct
50 Correct 22 ms 36184 KB Output is correct
51 Correct 27 ms 49500 KB Output is correct
52 Correct 1 ms 344 KB Output is correct
53 Correct 28 ms 49500 KB Output is correct
54 Correct 29 ms 49492 KB Output is correct
55 Correct 29 ms 49488 KB Output is correct
56 Correct 28 ms 49584 KB Output is correct
57 Correct 27 ms 49644 KB Output is correct
58 Correct 0 ms 348 KB Output is correct
59 Correct 1 ms 348 KB Output is correct
60 Correct 0 ms 348 KB Output is correct
61 Correct 558 ms 202148 KB Output is correct
62 Correct 1357 ms 408140 KB Output is correct
63 Correct 1339 ms 409836 KB Output is correct
64 Correct 1340 ms 409832 KB Output is correct
65 Correct 145 ms 151924 KB Output is correct
66 Correct 318 ms 238420 KB Output is correct
67 Correct 357 ms 257348 KB Output is correct
68 Correct 0 ms 344 KB Output is correct
69 Correct 0 ms 348 KB Output is correct
70 Correct 1 ms 348 KB Output is correct
71 Correct 0 ms 344 KB Output is correct
72 Correct 0 ms 348 KB Output is correct
73 Correct 2144 ms 530004 KB Output is correct
74 Execution timed out 5091 ms 530576 KB Time limit exceeded
75 Halted 0 ms 0 KB -