oj.uz

Submission #827200

# Submission time Handle Problem Language Result Execution time Memory
827200 2023-08-16T09:52:33 Z Sohsoh84 Fountain Parks (IOI21_parks) C++17
15 / 100
 1514 ms 47652 KB 
#include "parks.h"
#include <bits/stdc++.h>

using namespace std;

typedef pair<int, int> pll;

#define all(x)		(x).begin(), (x).end()
#define X		first
#define Y		second
#define sep		' '
#define debug(x)	cerr << #x << ": " << x << endl;

const int MAXN = 1e6 + 10;
const int DX[4] = {-1, 0, 1, 0};
const int DY[4] = {0, -1, 0, 1};

namespace answer {
	vector<int> u, v, a, b;
}

vector<pair<pll, int>> edges;

int X[MAXN], Y[MAXN], par[MAXN], n;
map<pll, int> mp;

int find(int v) {
	return par[v] == v ? v : par[v] = find(par[v]);
}

inline bool unite(int u_, int v_) {
	int u = find(u_), v = find(v_);
	if (u == v) return false;

	edges.push_back({{u_, v_}, (int)answer::u.size()});

	answer::u.push_back(u_);
	answer::v.push_back(v_);
	par[u] = v;

	return true;
}

int construct_roads(vector<int> x_, vector<int> y_) {
	n = x_.size();
	for (int i = 0; i < n; i++) {
		X[i] = x_[i];
		Y[i] = y_[i];

		mp[pll(X[i], Y[i])] = i;
		par[i] = i;
	}

	int edg = 0;
	vector<int> vert_vec;
	for (int i = 0; i < n; i++) vert_vec.push_back(i);
	sort(all(vert_vec), [] (int i, int j) {
		return X[i] + Y[i] < X[j] + Y[j];
	});

	for (int i = 0; i < 4; i++) {
		for (int tv = 0; tv < n; tv++) {
			int v = vert_vec[tv];

			int ux = X[v] + 2 * DX[i], uy = Y[v] + 2 * DY[i];
			auto it = mp.find(pll(ux, uy));
			if (it == mp.end()) continue;

			int u = it -> second;	
			edg += unite(u, v);
		}
	}

	if (edg < n - 1) return 0;

	sort(all(edges), [] (const pair<pll, int>& a, const pair<pll, int>& b) {
		return min(X[a.X.X] + Y[a.X.X], X[a.X.Y] + Y[a.X.Y]) < min(X[b.X.X] + Y[b.X.X], X[a.X.Y] + Y[a.X.Y]);
	});

	set<pll> st;
	answer::a.resize(n - 1);
	answer::b.resize(n - 1);

	for (int ti = 0; ti < n - 1; ti++) {
		int i = edges[ti].Y;

		cerr  << answer::u[i] << sep << answer::v[i] << endl;
		if (X[answer::u[i]] == X[answer::v[i]]) {
			int tx = X[answer::u[i]] - 1, ty = (Y[answer::u[i]] + Y[answer::v[i]]) / 2;	
			if (st.find(pll(tx, ty)) == st.end()) {
				st.insert(pll(tx, ty));
				answer::a[i] = tx;	
				answer::b[i] = ty;	
				continue;
			}

			tx += 2;
			if (st.find(pll(tx, ty)) == st.end()) {
				st.insert(pll(tx, ty));
				answer::a[i] = tx;	
				answer::b[i] = ty;	
				continue;
			}

			return 0;
		} else {
			int ty = Y[answer::u[i]] - 1, tx = (X[answer::u[i]] + X[answer::v[i]]) / 2;	
			if (st.find(pll(tx, ty)) == st.end()) {
				st.insert(pll(tx, ty));
				answer::a[i] = tx;	
				answer::b[i] = ty;	
				continue;
			}

			ty += 2;
			if (st.find(pll(tx, ty)) == st.end()) {
				st.insert(pll(tx, ty));
				answer::a[i] = tx;	
				answer::b[i] = ty;	
				continue;
			}

			return 0;
		}
	}

	build(answer::u, answer::v, answer::a, answer::b);
	return 1;
}

Subtask #1
5.0 / 5.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 212 KB Output is correct
2 Correct 1 ms 304 KB Output is correct
3 Correct 1 ms 212 KB Output is correct
4 Correct 1 ms 308 KB Output is correct
5 Correct 0 ms 304 KB Output is correct
6 Correct 0 ms 212 KB Output is correct
7 Correct 0 ms 212 KB Output is correct
8 Correct 1 ms 212 KB Output is correct
9 Correct 517 ms 23964 KB Output is correct
10 Correct 48 ms 2764 KB Output is correct
11 Correct 282 ms 13040 KB Output is correct
12 Correct 80 ms 3916 KB Output is correct
13 Correct 28 ms 6184 KB Output is correct
14 Correct 1 ms 440 KB Output is correct
15 Correct 2 ms 468 KB Output is correct
16 Correct 512 ms 23988 KB Output is correct

Subtask #2
10.0 / 10.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 212 KB Output is correct
2 Correct 1 ms 304 KB Output is correct
3 Correct 1 ms 212 KB Output is correct
4 Correct 1 ms 308 KB Output is correct
5 Correct 0 ms 304 KB Output is correct
6 Correct 0 ms 212 KB Output is correct
7 Correct 0 ms 212 KB Output is correct
8 Correct 1 ms 212 KB Output is correct
9 Correct 517 ms 23964 KB Output is correct
10 Correct 48 ms 2764 KB Output is correct
11 Correct 282 ms 13040 KB Output is correct
12 Correct 80 ms 3916 KB Output is correct
13 Correct 28 ms 6184 KB Output is correct
14 Correct 1 ms 440 KB Output is correct
15 Correct 2 ms 468 KB Output is correct
16 Correct 512 ms 23988 KB Output is correct
17 Correct 1 ms 212 KB Output is correct
18 Correct 0 ms 212 KB Output is correct
19 Correct 1 ms 212 KB Output is correct
20 Correct 1 ms 212 KB Output is correct
21 Correct 0 ms 212 KB Output is correct
22 Correct 0 ms 304 KB Output is correct
23 Correct 1173 ms 46064 KB Output is correct
24 Correct 1 ms 300 KB Output is correct
25 Correct 6 ms 548 KB Output is correct
26 Correct 2 ms 724 KB Output is correct
27 Correct 3 ms 832 KB Output is correct
28 Correct 438 ms 19056 KB Output is correct
29 Correct 665 ms 28020 KB Output is correct
30 Correct 935 ms 37056 KB Output is correct
31 Correct 1190 ms 46244 KB Output is correct
32 Correct 1 ms 212 KB Output is correct
33 Correct 1 ms 212 KB Output is correct
34 Correct 0 ms 212 KB Output is correct
35 Correct 0 ms 308 KB Output is correct
36 Correct 0 ms 212 KB Output is correct
37 Correct 1 ms 308 KB Output is correct
38 Correct 0 ms 212 KB Output is correct
39 Correct 0 ms 212 KB Output is correct
40 Correct 0 ms 212 KB Output is correct
41 Correct 0 ms 212 KB Output is correct
42 Correct 0 ms 212 KB Output is correct
43 Correct 2 ms 468 KB Output is correct
44 Correct 2 ms 724 KB Output is correct
45 Correct 557 ms 23844 KB Output is correct
46 Correct 861 ms 34196 KB Output is correct
47 Correct 826 ms 34172 KB Output is correct

Subtask #3
0 / 15.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 212 KB Output is correct
2 Correct 1 ms 304 KB Output is correct
3 Correct 1 ms 212 KB Output is correct
4 Correct 1 ms 308 KB Output is correct
5 Correct 0 ms 304 KB Output is correct
6 Correct 0 ms 212 KB Output is correct
7 Correct 0 ms 212 KB Output is correct
8 Correct 1 ms 212 KB Output is correct
9 Correct 517 ms 23964 KB Output is correct
10 Correct 48 ms 2764 KB Output is correct
11 Correct 282 ms 13040 KB Output is correct
12 Correct 80 ms 3916 KB Output is correct
13 Correct 28 ms 6184 KB Output is correct
14 Correct 1 ms 440 KB Output is correct
15 Correct 2 ms 468 KB Output is correct
16 Correct 512 ms 23988 KB Output is correct
17 Correct 1 ms 212 KB Output is correct
18 Correct 0 ms 212 KB Output is correct
19 Correct 1 ms 212 KB Output is correct
20 Correct 1 ms 212 KB Output is correct
21 Correct 0 ms 212 KB Output is correct
22 Correct 0 ms 304 KB Output is correct
23 Correct 1173 ms 46064 KB Output is correct
24 Correct 1 ms 300 KB Output is correct
25 Correct 6 ms 548 KB Output is correct
26 Correct 2 ms 724 KB Output is correct
27 Correct 3 ms 832 KB Output is correct
28 Correct 438 ms 19056 KB Output is correct
29 Correct 665 ms 28020 KB Output is correct
30 Correct 935 ms 37056 KB Output is correct
31 Correct 1190 ms 46244 KB Output is correct
32 Correct 1 ms 212 KB Output is correct
33 Correct 1 ms 212 KB Output is correct
34 Correct 0 ms 212 KB Output is correct
35 Correct 0 ms 308 KB Output is correct
36 Correct 0 ms 212 KB Output is correct
37 Correct 1 ms 308 KB Output is correct
38 Correct 0 ms 212 KB Output is correct
39 Correct 0 ms 212 KB Output is correct
40 Correct 0 ms 212 KB Output is correct
41 Correct 0 ms 212 KB Output is correct
42 Correct 0 ms 212 KB Output is correct
43 Correct 2 ms 468 KB Output is correct
44 Correct 2 ms 724 KB Output is correct
45 Correct 557 ms 23844 KB Output is correct
46 Correct 861 ms 34196 KB Output is correct
47 Correct 826 ms 34172 KB Output is correct
48 Correct 1 ms 212 KB Output is correct
49 Correct 1 ms 212 KB Output is correct
50 Correct 1 ms 212 KB Output is correct
51 Correct 1 ms 212 KB Output is correct
52 Correct 1 ms 212 KB Output is correct
53 Correct 1 ms 212 KB Output is correct
54 Correct 0 ms 212 KB Output is correct
55 Correct 1161 ms 45648 KB Output is correct
56 Correct 1 ms 212 KB Output is correct
57 Correct 12 ms 648 KB Output is correct
58 Correct 30 ms 1672 KB Output is correct
59 Correct 8 ms 1616 KB Output is correct
60 Correct 565 ms 23272 KB Output is correct
61 Correct 761 ms 31040 KB Output is correct
62 Correct 1018 ms 37980 KB Output is correct
63 Correct 1156 ms 45916 KB Output is correct
64 Correct 0 ms 304 KB Output is correct
65 Correct 0 ms 212 KB Output is correct
66 Correct 0 ms 212 KB Output is correct
67 Correct 1176 ms 46800 KB Output is correct
68 Correct 1114 ms 47372 KB Output is correct
69 Correct 1212 ms 46908 KB Output is correct
70 Correct 3 ms 724 KB Output is correct
71 Correct 6 ms 1344 KB Output is correct
72 Incorrect 102 ms 14220 KB Solution announced impossible, but it is possible.
73 Halted 0 ms 0 KB -

Subtask #4
0 / 20.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 212 KB Output is correct
2 Correct 1 ms 304 KB Output is correct
3 Correct 1 ms 212 KB Output is correct
4 Correct 1 ms 308 KB Output is correct
5 Correct 0 ms 304 KB Output is correct
6 Correct 0 ms 212 KB Output is correct
7 Correct 0 ms 212 KB Output is correct
8 Correct 1 ms 212 KB Output is correct
9 Correct 517 ms 23964 KB Output is correct
10 Correct 48 ms 2764 KB Output is correct
11 Correct 282 ms 13040 KB Output is correct
12 Correct 80 ms 3916 KB Output is correct
13 Correct 28 ms 6184 KB Output is correct
14 Correct 1 ms 440 KB Output is correct
15 Correct 2 ms 468 KB Output is correct
16 Correct 512 ms 23988 KB Output is correct
17 Correct 0 ms 212 KB Output is correct
18 Correct 0 ms 212 KB Output is correct
19 Correct 0 ms 212 KB Output is correct
20 Correct 1367 ms 46268 KB Output is correct
21 Correct 1230 ms 47652 KB Output is correct
22 Correct 1369 ms 46464 KB Output is correct
23 Correct 992 ms 39668 KB Output is correct
24 Correct 327 ms 20144 KB Output is correct
25 Correct 362 ms 25132 KB Output is correct
26 Correct 291 ms 25188 KB Output is correct
27 Correct 1296 ms 45432 KB Output is correct
28 Correct 1402 ms 45532 KB Output is correct
29 Correct 1485 ms 45440 KB Output is correct
30 Correct 1514 ms 45564 KB Output is correct
31 Correct 1 ms 212 KB Output is correct
32 Incorrect 15 ms 2228 KB Solution announced impossible, but it is possible.
33 Halted 0 ms 0 KB -

Subtask #5
0 / 20.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 212 KB Output is correct
2 Correct 1 ms 304 KB Output is correct
3 Correct 1 ms 212 KB Output is correct
4 Correct 1 ms 308 KB Output is correct
5 Correct 0 ms 304 KB Output is correct
6 Correct 0 ms 212 KB Output is correct
7 Correct 0 ms 212 KB Output is correct
8 Correct 1 ms 212 KB Output is correct
9 Correct 517 ms 23964 KB Output is correct
10 Correct 48 ms 2764 KB Output is correct
11 Correct 282 ms 13040 KB Output is correct
12 Correct 80 ms 3916 KB Output is correct
13 Correct 28 ms 6184 KB Output is correct
14 Correct 1 ms 440 KB Output is correct
15 Correct 2 ms 468 KB Output is correct
16 Correct 512 ms 23988 KB Output is correct
17 Correct 1264 ms 46464 KB Output is correct
18 Correct 1244 ms 46572 KB Output is correct
19 Incorrect 575 ms 28688 KB Solution announced impossible, but it is possible.
20 Halted 0 ms 0 KB -

Subtask #6
0 / 30.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 212 KB Output is correct
2 Correct 1 ms 304 KB Output is correct
3 Correct 1 ms 212 KB Output is correct
4 Correct 1 ms 308 KB Output is correct
5 Correct 0 ms 304 KB Output is correct
6 Correct 0 ms 212 KB Output is correct
7 Correct 0 ms 212 KB Output is correct
8 Correct 1 ms 212 KB Output is correct
9 Correct 517 ms 23964 KB Output is correct
10 Correct 48 ms 2764 KB Output is correct
11 Correct 282 ms 13040 KB Output is correct
12 Correct 80 ms 3916 KB Output is correct
13 Correct 28 ms 6184 KB Output is correct
14 Correct 1 ms 440 KB Output is correct
15 Correct 2 ms 468 KB Output is correct
16 Correct 512 ms 23988 KB Output is correct
17 Correct 1 ms 212 KB Output is correct
18 Correct 0 ms 212 KB Output is correct
19 Correct 1 ms 212 KB Output is correct
20 Correct 1 ms 212 KB Output is correct
21 Correct 0 ms 212 KB Output is correct
22 Correct 0 ms 304 KB Output is correct
23 Correct 1173 ms 46064 KB Output is correct
24 Correct 1 ms 300 KB Output is correct
25 Correct 6 ms 548 KB Output is correct
26 Correct 2 ms 724 KB Output is correct
27 Correct 3 ms 832 KB Output is correct
28 Correct 438 ms 19056 KB Output is correct
29 Correct 665 ms 28020 KB Output is correct
30 Correct 935 ms 37056 KB Output is correct
31 Correct 1190 ms 46244 KB Output is correct
32 Correct 1 ms 212 KB Output is correct
33 Correct 1 ms 212 KB Output is correct
34 Correct 0 ms 212 KB Output is correct
35 Correct 0 ms 308 KB Output is correct
36 Correct 0 ms 212 KB Output is correct
37 Correct 1 ms 308 KB Output is correct
38 Correct 0 ms 212 KB Output is correct
39 Correct 0 ms 212 KB Output is correct
40 Correct 0 ms 212 KB Output is correct
41 Correct 0 ms 212 KB Output is correct
42 Correct 0 ms 212 KB Output is correct
43 Correct 2 ms 468 KB Output is correct
44 Correct 2 ms 724 KB Output is correct
45 Correct 557 ms 23844 KB Output is correct
46 Correct 861 ms 34196 KB Output is correct
47 Correct 826 ms 34172 KB Output is correct
48 Correct 1 ms 212 KB Output is correct
49 Correct 1 ms 212 KB Output is correct
50 Correct 1 ms 212 KB Output is correct
51 Correct 1 ms 212 KB Output is correct
52 Correct 1 ms 212 KB Output is correct
53 Correct 1 ms 212 KB Output is correct
54 Correct 0 ms 212 KB Output is correct
55 Correct 1161 ms 45648 KB Output is correct
56 Correct 1 ms 212 KB Output is correct
57 Correct 12 ms 648 KB Output is correct
58 Correct 30 ms 1672 KB Output is correct
59 Correct 8 ms 1616 KB Output is correct
60 Correct 565 ms 23272 KB Output is correct
61 Correct 761 ms 31040 KB Output is correct
62 Correct 1018 ms 37980 KB Output is correct
63 Correct 1156 ms 45916 KB Output is correct
64 Correct 0 ms 304 KB Output is correct
65 Correct 0 ms 212 KB Output is correct
66 Correct 0 ms 212 KB Output is correct
67 Correct 1176 ms 46800 KB Output is correct
68 Correct 1114 ms 47372 KB Output is correct
69 Correct 1212 ms 46908 KB Output is correct
70 Correct 3 ms 724 KB Output is correct
71 Correct 6 ms 1344 KB Output is correct
72 Incorrect 102 ms 14220 KB Solution announced impossible, but it is possible.
73 Halted 0 ms 0 KB -