oj.uz

Submission #1054446

# Submission time Handle Problem Language Result Execution time Memory
1054446 2024-08-12T09:55:14 Z dozer Rectangles (IOI19_rect) C++14
72 / 100
 5000 ms 919888 KB 
#include "rect.h"
#include <bits/stdc++.h>
using namespace std;
#define sp " "
#define endl "\n"
#define pb push_back
#define pii pair<int, int>
#define st first
#define nd second
#define fileio() freopen("input.txt", "r", stdin), freopen("output.txt", "w", stdout)
#define fastio() cin.tie(0), ios_base::sync_with_stdio(0)
#define LL node * 2
#define RR node * 2 + 1
#define ll long long
#define MAXN 2505
#define LOGN 12
 
vector<pii> rng_h[MAXN], rng_v[MAXN];
vector<int> hor[MAXN][MAXN], ver[MAXN][MAXN];
vector<int> nxt_hor[MAXN][MAXN], nxt_ver[MAXN][MAXN];

void compute(vector<vector<int>> &a, int t){
	int n = a.size(), m = a.front().size();
	if (t == 1) swap(n, m);
	for (int i = 1; i < n - 1; i++){
		
		set<int> s;
		vector<int> v(m);
		iota(v.begin(), v.end(), 0);
		sort(v.begin(), v.end(), [&](int x, int y){
			if (t == 0){
				if (a[i][x] == a[i][y]) return x < y;
				return a[i][x] > a[i][y];
			}
			else{
				if (a[x][i] == a[y][i]) return x < y;
				return a[x][i] > a[y][i];
			}
		});
		
		int it = 0;
		while(it < m){
			vector<int> tmp;
			int last = 0;
			if (t) last = a[v[it]][i];
			else last = a[i][v[it]];
			while(it < m){
				if (t == 0 && a[i][v[it]] != last) break;
				else if (t == 1 && a[v[it]][i] != last) break;
				tmp.pb(v[it]);
				it++;
			}
			
			for (int j = 0; j < tmp.size(); j++){
				int x = tmp[j];
				auto it2 = s.lower_bound(x);
				int prv = -1, nxt = m + 1;
				if (j > 0) prv = tmp[j - 1];
				if (j + 1 < tmp.size()) nxt = tmp[j + 1];
				
				if (it2 != s.begin() && !s.empty()){
					it2--;
					
					if (x - 1 > *it2) {
						if (t == 0) rng_h[i].pb({*it2 + 1, x - 1});
						else rng_v[i].pb({*it2 + 1, x - 1});
					}
				}
				it2 = s.lower_bound(x);
				if (it2 != s.end()){
					if (*it2 > x + 1 && *it2 < nxt) {
						
						if (t == 0) rng_h[i].pb({x + 1, *it2 - 1});
						else rng_v[i].pb({x + 1, *it2 - 1});
					}
				}
				
				s.insert(x);
			}
		}
		
	}
}
 
 
int b_search(vector<int> &v, int pos){
	int ans = pos;
	for (int i = LOGN; i >= 0; i--){
		int tmp = ans + (1<<i);
		if (tmp >= v.size()) continue;
		if (v[tmp] - v[pos] == tmp - pos) ans = tmp;
	}
	return ans;
}
 
int tree[MAXN];

void update(int x, int val, int n){
	while(x <= n){
		tree[x] += val;
		int lsb = x & -x;
		x += lsb;
	}
}


int query(int x){
	int ans = 0;
	while(x > 0) {
		ans += tree[x];
		int lsb = x & -x;
		x -= lsb;
	}
	return ans;
}

long long count_rectangles(vector<vector<int>> a){
	compute(a, 0);
	compute(a, 1);
	
	int n = a.size(), m = a.front().size();
	for (int i = 1; i < n - 1; i++){
		sort(rng_h[i].begin(), rng_h[i].end());
		for (auto j : rng_h[i]){
			hor[j.st][j.nd].pb(i);
		}
	}
 
	for (int i = 1; i < m - 1; i++){
		sort(rng_v[i].begin(), rng_v[i].end());
		for (auto j : rng_v[i]){
			ver[j.st][j.nd].pb(i);
		}
	}

	long long ans = 0;
	
	for (int i = 1; i < n - 1; i++){
		for (int j = 1; j < m - 1; j++){
			vector<pii> horr, verr;
			int pos = lower_bound(rng_h[i].begin(), rng_h[i].end(), make_pair(j, 0)) - rng_h[i].begin();
			while(pos != rng_h[i].size() && rng_h[i][pos].st == j){
				int l = j, r = rng_h[i][pos].nd;
				pos++;
				int curr = lower_bound(hor[l][r].begin(), hor[l][r].end(), i) - hor[l][r].begin();
				int to = hor[l][r][b_search(hor[l][r], curr)];
				horr.pb({r, to});
			}

			pos = lower_bound(rng_v[j].begin(), rng_v[j].end(), make_pair(i, 0)) - rng_v[j].begin();
			while(pos != rng_v[j].size() && rng_v[j][pos].st == i){
				int l = i, r = rng_v[j][pos].nd;
				pos++;
				int curr = lower_bound(ver[l][r].begin(), ver[l][r].end(), j) - ver[l][r].begin();
				int to = ver[l][r][b_search(ver[l][r], curr)];
				verr.pb({to, r});
			}
			sort(horr.begin(), horr.end());
			sort(verr.begin(), verr.end());

			int it = 0;
			vector<int> del;
			for (auto k : verr){
				
				while(it < horr.size() && horr[it].st <= k.st){
					del.pb(horr[it].nd);
					update(horr[it].nd, 1, n);
					it++;
				}
				ans += query(n) - query(k.nd - 1);
			}

			for (auto i : del){
				update(i, -1, n);
			}
		}
	}
	return ans;
 
	return 0;
}
 
 
/*
int main() {
	fileio();
	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];
		}
	}
	long long result = count_rectangles(a);
 
	printf("%lld\n", result);
	return 0;
}*/

Compilation message

rect.cpp: In function 'void compute(std::vector<std::vector<int> >&, int)':
rect.cpp:54:22: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<int>::size_type' {aka 'long unsigned int'} [-Wsign-compare]
   54 |    for (int j = 0; j < tmp.size(); j++){
      |                    ~~^~~~~~~~~~~~
rect.cpp:59:15: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<int>::size_type' {aka 'long unsigned int'} [-Wsign-compare]
   59 |     if (j + 1 < tmp.size()) nxt = tmp[j + 1];
      |         ~~~~~~^~~~~~~~~~~~
rect.cpp:57:9: warning: variable 'prv' set but not used [-Wunused-but-set-variable]
   57 |     int prv = -1, nxt = m + 1;
      |         ^~~
rect.cpp: In function 'int b_search(std::vector<int>&, int)':
rect.cpp:90:11: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<int>::size_type' {aka 'long unsigned int'} [-Wsign-compare]
   90 |   if (tmp >= v.size()) continue;
      |       ~~~~^~~~~~~~~~~
rect.cpp: In function 'long long int count_rectangles(std::vector<std::vector<int> >)':
rect.cpp:142:14: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<std::pair<int, int> >::size_type' {aka 'long unsigned int'} [-Wsign-compare]
  142 |    while(pos != rng_h[i].size() && rng_h[i][pos].st == j){
      |          ~~~~^~~~~~~~~~~~~~~~~~
rect.cpp:151:14: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<std::pair<int, int> >::size_type' {aka 'long unsigned int'} [-Wsign-compare]
  151 |    while(pos != rng_v[j].size() && rng_v[j][pos].st == i){
      |          ~~~~^~~~~~~~~~~~~~~~~~
rect.cpp:165:14: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<std::pair<int, int> >::size_type' {aka 'long unsigned int'} [-Wsign-compare]
  165 |     while(it < horr.size() && horr[it].st <= k.st){
      |           ~~~^~~~~~~~~~~~~

Subtask #1
8.0 / 8.0

# Verdict Execution time Memory Grader output
1 Correct 150 ms 589888 KB Output is correct
2 Correct 153 ms 589972 KB Output is correct
3 Correct 146 ms 589908 KB Output is correct
4 Correct 144 ms 589848 KB Output is correct
5 Correct 155 ms 589908 KB Output is correct
6 Correct 146 ms 589908 KB Output is correct
7 Correct 146 ms 589856 KB Output is correct
8 Correct 143 ms 589904 KB Output is correct
9 Correct 147 ms 589908 KB Output is correct
10 Correct 149 ms 589908 KB Output is correct
11 Correct 146 ms 589908 KB Output is correct
12 Correct 145 ms 589912 KB Output is correct
13 Correct 143 ms 589904 KB Output is correct
14 Correct 158 ms 589904 KB Output is correct
15 Correct 158 ms 589904 KB Output is correct
16 Correct 150 ms 589848 KB Output is correct
17 Correct 143 ms 589928 KB Output is correct
18 Correct 146 ms 589904 KB Output is correct
19 Correct 146 ms 589908 KB Output is correct
20 Correct 143 ms 589776 KB Output is correct
21 Correct 144 ms 589904 KB Output is correct

Subtask #2
7.0 / 7.0

# Verdict Execution time Memory Grader output
1 Correct 150 ms 589888 KB Output is correct
2 Correct 153 ms 589972 KB Output is correct
3 Correct 146 ms 589908 KB Output is correct
4 Correct 144 ms 589848 KB Output is correct
5 Correct 155 ms 589908 KB Output is correct
6 Correct 146 ms 589908 KB Output is correct
7 Correct 146 ms 589856 KB Output is correct
8 Correct 143 ms 589904 KB Output is correct
9 Correct 147 ms 589908 KB Output is correct
10 Correct 149 ms 589908 KB Output is correct
11 Correct 146 ms 589908 KB Output is correct
12 Correct 145 ms 589912 KB Output is correct
13 Correct 143 ms 589904 KB Output is correct
14 Correct 158 ms 589904 KB Output is correct
15 Correct 158 ms 589904 KB Output is correct
16 Correct 150 ms 589848 KB Output is correct
17 Correct 143 ms 589928 KB Output is correct
18 Correct 146 ms 589904 KB Output is correct
19 Correct 146 ms 589908 KB Output is correct
20 Correct 143 ms 589776 KB Output is correct
21 Correct 144 ms 589904 KB Output is correct
22 Correct 152 ms 590160 KB Output is correct
23 Correct 152 ms 590256 KB Output is correct
24 Correct 145 ms 590164 KB Output is correct
25 Correct 150 ms 589904 KB Output is correct
26 Correct 150 ms 590164 KB Output is correct
27 Correct 149 ms 590240 KB Output is correct
28 Correct 151 ms 590160 KB Output is correct
29 Correct 152 ms 589904 KB Output is correct

Subtask #3
12.0 / 12.0

# Verdict Execution time Memory Grader output
1 Correct 150 ms 589888 KB Output is correct
2 Correct 153 ms 589972 KB Output is correct
3 Correct 146 ms 589908 KB Output is correct
4 Correct 144 ms 589848 KB Output is correct
5 Correct 155 ms 589908 KB Output is correct
6 Correct 146 ms 589908 KB Output is correct
7 Correct 146 ms 589856 KB Output is correct
8 Correct 143 ms 589904 KB Output is correct
9 Correct 147 ms 589908 KB Output is correct
10 Correct 149 ms 589908 KB Output is correct
11 Correct 146 ms 589908 KB Output is correct
12 Correct 145 ms 589912 KB Output is correct
13 Correct 143 ms 589904 KB Output is correct
14 Correct 158 ms 589904 KB Output is correct
15 Correct 158 ms 589904 KB Output is correct
16 Correct 150 ms 589848 KB Output is correct
17 Correct 152 ms 590160 KB Output is correct
18 Correct 152 ms 590256 KB Output is correct
19 Correct 145 ms 590164 KB Output is correct
20 Correct 150 ms 589904 KB Output is correct
21 Correct 150 ms 590164 KB Output is correct
22 Correct 149 ms 590240 KB Output is correct
23 Correct 151 ms 590160 KB Output is correct
24 Correct 152 ms 589904 KB Output is correct
25 Correct 143 ms 589928 KB Output is correct
26 Correct 146 ms 589904 KB Output is correct
27 Correct 146 ms 589908 KB Output is correct
28 Correct 143 ms 589776 KB Output is correct
29 Correct 144 ms 589904 KB Output is correct
30 Correct 161 ms 591504 KB Output is correct
31 Correct 163 ms 591636 KB Output is correct
32 Correct 163 ms 591700 KB Output is correct
33 Correct 163 ms 591024 KB Output is correct
34 Correct 175 ms 591712 KB Output is correct
35 Correct 175 ms 591948 KB Output is correct
36 Correct 177 ms 591844 KB Output is correct
37 Correct 186 ms 591848 KB Output is correct

Subtask #4
22.0 / 22.0

# Verdict Execution time Memory Grader output
1 Correct 150 ms 589888 KB Output is correct
2 Correct 153 ms 589972 KB Output is correct
3 Correct 146 ms 589908 KB Output is correct
4 Correct 144 ms 589848 KB Output is correct
5 Correct 155 ms 589908 KB Output is correct
6 Correct 146 ms 589908 KB Output is correct
7 Correct 146 ms 589856 KB Output is correct
8 Correct 143 ms 589904 KB Output is correct
9 Correct 147 ms 589908 KB Output is correct
10 Correct 149 ms 589908 KB Output is correct
11 Correct 146 ms 589908 KB Output is correct
12 Correct 145 ms 589912 KB Output is correct
13 Correct 143 ms 589904 KB Output is correct
14 Correct 158 ms 589904 KB Output is correct
15 Correct 158 ms 589904 KB Output is correct
16 Correct 150 ms 589848 KB Output is correct
17 Correct 152 ms 590160 KB Output is correct
18 Correct 152 ms 590256 KB Output is correct
19 Correct 145 ms 590164 KB Output is correct
20 Correct 150 ms 589904 KB Output is correct
21 Correct 150 ms 590164 KB Output is correct
22 Correct 149 ms 590240 KB Output is correct
23 Correct 151 ms 590160 KB Output is correct
24 Correct 152 ms 589904 KB Output is correct
25 Correct 161 ms 591504 KB Output is correct
26 Correct 163 ms 591636 KB Output is correct
27 Correct 163 ms 591700 KB Output is correct
28 Correct 163 ms 591024 KB Output is correct
29 Correct 175 ms 591712 KB Output is correct
30 Correct 175 ms 591948 KB Output is correct
31 Correct 177 ms 591844 KB Output is correct
32 Correct 186 ms 591848 KB Output is correct
33 Correct 143 ms 589928 KB Output is correct
34 Correct 146 ms 589904 KB Output is correct
35 Correct 146 ms 589908 KB Output is correct
36 Correct 143 ms 589776 KB Output is correct
37 Correct 144 ms 589904 KB Output is correct
38 Correct 351 ms 616544 KB Output is correct
39 Correct 380 ms 616532 KB Output is correct
40 Correct 340 ms 616536 KB Output is correct
41 Correct 340 ms 616532 KB Output is correct
42 Correct 417 ms 612432 KB Output is correct
43 Correct 435 ms 612508 KB Output is correct
44 Correct 429 ms 612692 KB Output is correct
45 Correct 395 ms 611944 KB Output is correct
46 Correct 354 ms 599048 KB Output is correct
47 Correct 406 ms 602444 KB Output is correct
48 Correct 567 ms 612436 KB Output is correct
49 Correct 559 ms 613456 KB Output is correct
50 Correct 341 ms 602196 KB Output is correct
51 Correct 346 ms 601940 KB Output is correct
52 Correct 576 ms 611664 KB Output is correct
53 Correct 551 ms 612104 KB Output is correct

Subtask #5
10.0 / 10.0

# Verdict Execution time Memory Grader output
1 Correct 146 ms 590364 KB Output is correct
2 Correct 147 ms 590160 KB Output is correct
3 Correct 160 ms 590160 KB Output is correct
4 Correct 146 ms 589820 KB Output is correct
5 Correct 149 ms 590160 KB Output is correct
6 Correct 149 ms 590312 KB Output is correct
7 Correct 148 ms 590172 KB Output is correct
8 Correct 153 ms 590164 KB Output is correct
9 Correct 147 ms 590160 KB Output is correct
10 Correct 159 ms 589904 KB Output is correct
11 Correct 145 ms 589908 KB Output is correct

Subtask #6
13.0 / 13.0

# Verdict Execution time Memory Grader output
1 Correct 143 ms 589928 KB Output is correct
2 Correct 146 ms 589904 KB Output is correct
3 Correct 146 ms 589908 KB Output is correct
4 Correct 143 ms 589776 KB Output is correct
5 Correct 144 ms 589904 KB Output is correct
6 Correct 147 ms 589772 KB Output is correct
7 Correct 1520 ms 645040 KB Output is correct
8 Correct 3192 ms 706216 KB Output is correct
9 Correct 3392 ms 706264 KB Output is correct
10 Correct 3210 ms 706472 KB Output is correct
11 Correct 832 ms 617556 KB Output is correct
12 Correct 1517 ms 642312 KB Output is correct
13 Correct 1591 ms 645628 KB Output is correct

Subtask #7
0 / 28.0

# Verdict Execution time Memory Grader output
1 Correct 150 ms 589888 KB Output is correct
2 Correct 153 ms 589972 KB Output is correct
3 Correct 146 ms 589908 KB Output is correct
4 Correct 144 ms 589848 KB Output is correct
5 Correct 155 ms 589908 KB Output is correct
6 Correct 146 ms 589908 KB Output is correct
7 Correct 146 ms 589856 KB Output is correct
8 Correct 143 ms 589904 KB Output is correct
9 Correct 147 ms 589908 KB Output is correct
10 Correct 149 ms 589908 KB Output is correct
11 Correct 146 ms 589908 KB Output is correct
12 Correct 145 ms 589912 KB Output is correct
13 Correct 143 ms 589904 KB Output is correct
14 Correct 158 ms 589904 KB Output is correct
15 Correct 158 ms 589904 KB Output is correct
16 Correct 150 ms 589848 KB Output is correct
17 Correct 152 ms 590160 KB Output is correct
18 Correct 152 ms 590256 KB Output is correct
19 Correct 145 ms 590164 KB Output is correct
20 Correct 150 ms 589904 KB Output is correct
21 Correct 150 ms 590164 KB Output is correct
22 Correct 149 ms 590240 KB Output is correct
23 Correct 151 ms 590160 KB Output is correct
24 Correct 152 ms 589904 KB Output is correct
25 Correct 161 ms 591504 KB Output is correct
26 Correct 163 ms 591636 KB Output is correct
27 Correct 163 ms 591700 KB Output is correct
28 Correct 163 ms 591024 KB Output is correct
29 Correct 175 ms 591712 KB Output is correct
30 Correct 175 ms 591948 KB Output is correct
31 Correct 177 ms 591844 KB Output is correct
32 Correct 186 ms 591848 KB Output is correct
33 Correct 351 ms 616544 KB Output is correct
34 Correct 380 ms 616532 KB Output is correct
35 Correct 340 ms 616536 KB Output is correct
36 Correct 340 ms 616532 KB Output is correct
37 Correct 417 ms 612432 KB Output is correct
38 Correct 435 ms 612508 KB Output is correct
39 Correct 429 ms 612692 KB Output is correct
40 Correct 395 ms 611944 KB Output is correct
41 Correct 354 ms 599048 KB Output is correct
42 Correct 406 ms 602444 KB Output is correct
43 Correct 567 ms 612436 KB Output is correct
44 Correct 559 ms 613456 KB Output is correct
45 Correct 341 ms 602196 KB Output is correct
46 Correct 346 ms 601940 KB Output is correct
47 Correct 576 ms 611664 KB Output is correct
48 Correct 551 ms 612104 KB Output is correct
49 Correct 146 ms 590364 KB Output is correct
50 Correct 147 ms 590160 KB Output is correct
51 Correct 160 ms 590160 KB Output is correct
52 Correct 146 ms 589820 KB Output is correct
53 Correct 149 ms 590160 KB Output is correct
54 Correct 149 ms 590312 KB Output is correct
55 Correct 148 ms 590172 KB Output is correct
56 Correct 153 ms 590164 KB Output is correct
57 Correct 147 ms 590160 KB Output is correct
58 Correct 159 ms 589904 KB Output is correct
59 Correct 145 ms 589908 KB Output is correct
60 Correct 147 ms 589772 KB Output is correct
61 Correct 1520 ms 645040 KB Output is correct
62 Correct 3192 ms 706216 KB Output is correct
63 Correct 3392 ms 706264 KB Output is correct
64 Correct 3210 ms 706472 KB Output is correct
65 Correct 832 ms 617556 KB Output is correct
66 Correct 1517 ms 642312 KB Output is correct
67 Correct 1591 ms 645628 KB Output is correct
68 Correct 143 ms 589928 KB Output is correct
69 Correct 146 ms 589904 KB Output is correct
70 Correct 146 ms 589908 KB Output is correct
71 Correct 143 ms 589776 KB Output is correct
72 Correct 144 ms 589904 KB Output is correct
73 Correct 3502 ms 919524 KB Output is correct
74 Correct 3405 ms 919888 KB Output is correct
75 Correct 3409 ms 919540 KB Output is correct
76 Correct 3236 ms 896340 KB Output is correct
77 Correct 4648 ms 879464 KB Output is correct
78 Correct 3764 ms 752212 KB Output is correct
79 Correct 3941 ms 773336 KB Output is correct
80 Execution timed out 5085 ms 851196 KB Time limit exceeded
81 Halted 0 ms 0 KB -