oj.uz

Submission #994693

# Submission time Handle Problem Language Result Execution time Memory
994693 2024-06-08T03:57:16 Z pavement Portal (BOI24_portal) C++17
40 / 100
 31 ms 3588 KB 
#include <bits/stdc++.h>
using namespace std;

#define pb push_back
#define eb emplace_back
#define int long long

using ii = pair<int, int>;

int N, x[100005], y[100005], dx[100005], dy[100005];

vector<ii> reduce(vector<ii> v) {
	//~ cout << "BEF\n";
	//~ for (auto [x, y] : v) {
		//~ cout << x << ' ' << y << '\n';
	//~ }
	for (int rep = 0; rep < 2; rep++) {
		// reduce 0 and 1
		while (v[0].first && v[1].first) {
			if (v[0].first < 0) {
				v[0].first = -v[0].first;
				v[0].second = -v[0].second;
			}
			if (v[1].first < 0) {
				v[1].first = -v[1].first;
				v[1].second = -v[1].second;
			}
			if (v[1].first > v[0].first) {
				swap(v[0], v[1]);
			}
			int t = v[0].first / v[1].first;
			v[0].first -= t * v[1].first;
			v[0].second -= t * v[1].second;
		}
		if (v[0].first == 0) {
			swap(v[0], v[2]);
		} else {
			swap(v[1], v[2]);
		}
	}
	//~ cout << "AFT\n";
	//~ for (auto [x, y] : v) {
		//~ cout << x << ' ' << y << '\n';
	//~ }
	vector<int> zz;
	vector<ii> oth;
	for (int i = 0; i < 3; i++) {
		if (v[i].first == 0) {
			zz.pb(v[i].second);
		} else {
			oth.pb(v[i]);
		}
	}
	assert(zz.size() >= 2);
	int g = 0;
	for (auto i : zz) {
		g = __gcd(g, i);
	}
	oth.eb(0, g);
	return oth;
}

main() {
	ios::sync_with_stdio(0);
	cin.tie(0);
	cin >> N;
	for (int i = 1; i <= N; i++) {
		cin >> x[i] >> y[i];
	}
	vector<ii> vec;
	for (int i = 1; i < N; i++) {
		dx[i] = x[i + 1] - x[i];
		dy[i] = y[i + 1] - y[i];
		if ((int)vec.size() < 3) {
			vec.eb(dx[i], dy[i]);
		}
		if ((int)vec.size() == 3) {
			vec = reduce(vec);
		}
	}
	assert(vec.size() <= 2);
	if (vec.size() <= 1) {
		cout << "-1\n";
	} else {
		if (vec[0].first * vec[1].second == vec[0].second * vec[1].first) {
			cout << "-1\n";
		} else {
			cout << llabs(vec[0].first * vec[1].second - vec[0].second * vec[1].first) << '\n';
		}
	}
}

Compilation message

Main.cpp:63:1: warning: ISO C++ forbids declaration of 'main' with no type [-Wreturn-type]
   63 | main() {
      | ^~~~

Subtask #1
1.0 / 1.0

# Verdict Execution time Memory Grader output
1 Correct 0 ms 2396 KB Output is correct
2 Correct 0 ms 2396 KB Output is correct
3 Correct 0 ms 2396 KB Output is correct
4 Correct 0 ms 2396 KB Output is correct
5 Correct 1 ms 2396 KB Output is correct
6 Correct 0 ms 2396 KB Output is correct
7 Correct 0 ms 2396 KB Output is correct
8 Correct 0 ms 2396 KB Output is correct
9 Correct 1 ms 2396 KB Output is correct
10 Correct 1 ms 2396 KB Output is correct
11 Correct 1 ms 2396 KB Output is correct
12 Correct 1 ms 2396 KB Output is correct
13 Correct 0 ms 2396 KB Output is correct
14 Correct 0 ms 2396 KB Output is correct
15 Correct 0 ms 2396 KB Output is correct
16 Correct 0 ms 2396 KB Output is correct
17 Correct 0 ms 2396 KB Output is correct
18 Correct 0 ms 2396 KB Output is correct

Subtask #2
10.0 / 10.0

# Verdict Execution time Memory Grader output
1 Correct 0 ms 2396 KB Output is correct
2 Correct 0 ms 2396 KB Output is correct
3 Correct 0 ms 2396 KB Output is correct
4 Correct 0 ms 2396 KB Output is correct
5 Correct 1 ms 2396 KB Output is correct
6 Correct 0 ms 2396 KB Output is correct
7 Correct 0 ms 2396 KB Output is correct
8 Correct 0 ms 2396 KB Output is correct
9 Correct 1 ms 2396 KB Output is correct
10 Correct 1 ms 2396 KB Output is correct
11 Correct 1 ms 2396 KB Output is correct
12 Correct 1 ms 2396 KB Output is correct
13 Correct 0 ms 2396 KB Output is correct
14 Correct 0 ms 2396 KB Output is correct
15 Correct 0 ms 2396 KB Output is correct
16 Correct 0 ms 2396 KB Output is correct
17 Correct 0 ms 2396 KB Output is correct
18 Correct 0 ms 2396 KB Output is correct
19 Correct 0 ms 2396 KB Output is correct
20 Correct 0 ms 2396 KB Output is correct
21 Correct 0 ms 2396 KB Output is correct
22 Correct 0 ms 2396 KB Output is correct
23 Correct 0 ms 2396 KB Output is correct
24 Correct 0 ms 2396 KB Output is correct
25 Correct 1 ms 2396 KB Output is correct
26 Correct 0 ms 2396 KB Output is correct
27 Correct 0 ms 2396 KB Output is correct
28 Correct 1 ms 2396 KB Output is correct
29 Correct 0 ms 2396 KB Output is correct
30 Correct 1 ms 2648 KB Output is correct
31 Correct 1 ms 2392 KB Output is correct
32 Correct 0 ms 2396 KB Output is correct
33 Correct 0 ms 2396 KB Output is correct
34 Correct 0 ms 2396 KB Output is correct
35 Correct 1 ms 2396 KB Output is correct
36 Correct 0 ms 2396 KB Output is correct
37 Correct 0 ms 2396 KB Output is correct
38 Correct 1 ms 2396 KB Output is correct
39 Correct 0 ms 2396 KB Output is correct

Subtask #3
0 / 10.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 2392 KB Output is correct
2 Correct 22 ms 3588 KB Output is correct
3 Correct 23 ms 3420 KB Output is correct
4 Correct 23 ms 3420 KB Output is correct
5 Correct 22 ms 3420 KB Output is correct
6 Correct 22 ms 3420 KB Output is correct
7 Correct 22 ms 3568 KB Output is correct
8 Correct 23 ms 3416 KB Output is correct
9 Correct 22 ms 3412 KB Output is correct
10 Correct 23 ms 3416 KB Output is correct
11 Correct 22 ms 3420 KB Output is correct
12 Correct 24 ms 3420 KB Output is correct
13 Correct 0 ms 2392 KB Output is correct
14 Correct 31 ms 3500 KB Output is correct
15 Incorrect 24 ms 3420 KB Output isn't correct
16 Halted 0 ms 0 KB -

Subtask #4
29.0 / 29.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 2396 KB Output is correct
2 Correct 1 ms 2396 KB Output is correct
3 Correct 0 ms 2396 KB Output is correct
4 Correct 0 ms 2396 KB Output is correct
5 Correct 1 ms 2396 KB Output is correct
6 Correct 0 ms 2396 KB Output is correct
7 Correct 0 ms 2396 KB Output is correct
8 Correct 0 ms 2396 KB Output is correct
9 Correct 0 ms 2396 KB Output is correct
10 Correct 0 ms 2396 KB Output is correct
11 Correct 0 ms 2396 KB Output is correct
12 Correct 1 ms 2392 KB Output is correct
13 Correct 0 ms 2396 KB Output is correct
14 Correct 0 ms 2396 KB Output is correct
15 Correct 1 ms 2396 KB Output is correct
16 Correct 1 ms 2392 KB Output is correct
17 Correct 1 ms 2392 KB Output is correct
18 Correct 1 ms 2396 KB Output is correct
19 Correct 1 ms 2396 KB Output is correct
20 Correct 0 ms 2396 KB Output is correct
21 Correct 1 ms 2396 KB Output is correct
22 Correct 1 ms 2396 KB Output is correct
23 Correct 0 ms 2396 KB Output is correct
24 Correct 1 ms 2392 KB Output is correct
25 Correct 0 ms 2396 KB Output is correct
26 Correct 0 ms 2396 KB Output is correct
27 Correct 1 ms 2396 KB Output is correct
28 Correct 0 ms 2396 KB Output is correct
29 Correct 0 ms 2396 KB Output is correct
30 Correct 0 ms 2396 KB Output is correct
31 Correct 0 ms 2396 KB Output is correct
32 Correct 0 ms 2396 KB Output is correct
33 Correct 1 ms 2396 KB Output is correct
34 Correct 0 ms 2396 KB Output is correct
35 Correct 0 ms 2396 KB Output is correct
36 Correct 0 ms 2396 KB Output is correct
37 Correct 0 ms 2396 KB Output is correct
38 Correct 0 ms 2396 KB Output is correct
39 Correct 0 ms 2396 KB Output is correct
40 Correct 1 ms 2396 KB Output is correct

Subtask #5
0 / 15.0

# Verdict Execution time Memory Grader output
1 Correct 0 ms 2396 KB Output is correct
2 Correct 0 ms 2396 KB Output is correct
3 Correct 0 ms 2396 KB Output is correct
4 Correct 0 ms 2396 KB Output is correct
5 Correct 1 ms 2396 KB Output is correct
6 Correct 0 ms 2396 KB Output is correct
7 Correct 0 ms 2396 KB Output is correct
8 Correct 0 ms 2396 KB Output is correct
9 Correct 1 ms 2396 KB Output is correct
10 Correct 1 ms 2396 KB Output is correct
11 Correct 1 ms 2396 KB Output is correct
12 Correct 1 ms 2396 KB Output is correct
13 Correct 0 ms 2396 KB Output is correct
14 Correct 0 ms 2396 KB Output is correct
15 Correct 0 ms 2396 KB Output is correct
16 Correct 0 ms 2396 KB Output is correct
17 Correct 0 ms 2396 KB Output is correct
18 Correct 0 ms 2396 KB Output is correct
19 Correct 0 ms 2396 KB Output is correct
20 Correct 0 ms 2396 KB Output is correct
21 Correct 0 ms 2396 KB Output is correct
22 Correct 0 ms 2396 KB Output is correct
23 Correct 0 ms 2396 KB Output is correct
24 Correct 0 ms 2396 KB Output is correct
25 Correct 1 ms 2396 KB Output is correct
26 Correct 0 ms 2396 KB Output is correct
27 Correct 0 ms 2396 KB Output is correct
28 Correct 1 ms 2396 KB Output is correct
29 Correct 0 ms 2396 KB Output is correct
30 Correct 1 ms 2648 KB Output is correct
31 Correct 1 ms 2392 KB Output is correct
32 Correct 0 ms 2396 KB Output is correct
33 Correct 0 ms 2396 KB Output is correct
34 Correct 0 ms 2396 KB Output is correct
35 Correct 1 ms 2396 KB Output is correct
36 Correct 0 ms 2396 KB Output is correct
37 Correct 0 ms 2396 KB Output is correct
38 Correct 1 ms 2396 KB Output is correct
39 Correct 0 ms 2396 KB Output is correct
40 Correct 1 ms 2396 KB Output is correct
41 Correct 1 ms 2396 KB Output is correct
42 Correct 0 ms 2396 KB Output is correct
43 Correct 0 ms 2396 KB Output is correct
44 Correct 1 ms 2396 KB Output is correct
45 Correct 0 ms 2396 KB Output is correct
46 Correct 0 ms 2396 KB Output is correct
47 Correct 0 ms 2396 KB Output is correct
48 Correct 0 ms 2396 KB Output is correct
49 Correct 0 ms 2396 KB Output is correct
50 Correct 0 ms 2396 KB Output is correct
51 Correct 1 ms 2392 KB Output is correct
52 Correct 0 ms 2396 KB Output is correct
53 Correct 0 ms 2396 KB Output is correct
54 Correct 1 ms 2396 KB Output is correct
55 Correct 1 ms 2392 KB Output is correct
56 Correct 1 ms 2392 KB Output is correct
57 Correct 1 ms 2396 KB Output is correct
58 Correct 1 ms 2396 KB Output is correct
59 Correct 0 ms 2396 KB Output is correct
60 Correct 1 ms 2396 KB Output is correct
61 Correct 1 ms 2396 KB Output is correct
62 Correct 0 ms 2396 KB Output is correct
63 Correct 1 ms 2392 KB Output is correct
64 Correct 0 ms 2396 KB Output is correct
65 Correct 0 ms 2396 KB Output is correct
66 Correct 1 ms 2396 KB Output is correct
67 Correct 0 ms 2396 KB Output is correct
68 Correct 0 ms 2396 KB Output is correct
69 Correct 0 ms 2396 KB Output is correct
70 Correct 0 ms 2396 KB Output is correct
71 Correct 0 ms 2396 KB Output is correct
72 Correct 1 ms 2396 KB Output is correct
73 Correct 0 ms 2396 KB Output is correct
74 Correct 0 ms 2396 KB Output is correct
75 Correct 0 ms 2396 KB Output is correct
76 Correct 0 ms 2396 KB Output is correct
77 Correct 0 ms 2396 KB Output is correct
78 Correct 0 ms 2396 KB Output is correct
79 Correct 1 ms 2396 KB Output is correct
80 Incorrect 1 ms 2392 KB Output isn't correct
81 Halted 0 ms 0 KB -

Subtask #6
0 / 35.0

# Verdict Execution time Memory Grader output
1 Correct 0 ms 2396 KB Output is correct
2 Correct 0 ms 2396 KB Output is correct
3 Correct 0 ms 2396 KB Output is correct
4 Correct 0 ms 2396 KB Output is correct
5 Correct 1 ms 2396 KB Output is correct
6 Correct 0 ms 2396 KB Output is correct
7 Correct 0 ms 2396 KB Output is correct
8 Correct 0 ms 2396 KB Output is correct
9 Correct 1 ms 2396 KB Output is correct
10 Correct 1 ms 2396 KB Output is correct
11 Correct 1 ms 2396 KB Output is correct
12 Correct 1 ms 2396 KB Output is correct
13 Correct 0 ms 2396 KB Output is correct
14 Correct 0 ms 2396 KB Output is correct
15 Correct 0 ms 2396 KB Output is correct
16 Correct 0 ms 2396 KB Output is correct
17 Correct 0 ms 2396 KB Output is correct
18 Correct 0 ms 2396 KB Output is correct
19 Correct 0 ms 2396 KB Output is correct
20 Correct 0 ms 2396 KB Output is correct
21 Correct 0 ms 2396 KB Output is correct
22 Correct 0 ms 2396 KB Output is correct
23 Correct 0 ms 2396 KB Output is correct
24 Correct 0 ms 2396 KB Output is correct
25 Correct 1 ms 2396 KB Output is correct
26 Correct 0 ms 2396 KB Output is correct
27 Correct 0 ms 2396 KB Output is correct
28 Correct 1 ms 2396 KB Output is correct
29 Correct 0 ms 2396 KB Output is correct
30 Correct 1 ms 2648 KB Output is correct
31 Correct 1 ms 2392 KB Output is correct
32 Correct 0 ms 2396 KB Output is correct
33 Correct 0 ms 2396 KB Output is correct
34 Correct 0 ms 2396 KB Output is correct
35 Correct 1 ms 2396 KB Output is correct
36 Correct 0 ms 2396 KB Output is correct
37 Correct 0 ms 2396 KB Output is correct
38 Correct 1 ms 2396 KB Output is correct
39 Correct 0 ms 2396 KB Output is correct
40 Correct 1 ms 2392 KB Output is correct
41 Correct 22 ms 3588 KB Output is correct
42 Correct 23 ms 3420 KB Output is correct
43 Correct 23 ms 3420 KB Output is correct
44 Correct 22 ms 3420 KB Output is correct
45 Correct 22 ms 3420 KB Output is correct
46 Correct 22 ms 3568 KB Output is correct
47 Correct 23 ms 3416 KB Output is correct
48 Correct 22 ms 3412 KB Output is correct
49 Correct 23 ms 3416 KB Output is correct
50 Correct 22 ms 3420 KB Output is correct
51 Correct 24 ms 3420 KB Output is correct
52 Correct 0 ms 2392 KB Output is correct
53 Correct 31 ms 3500 KB Output is correct
54 Incorrect 24 ms 3420 KB Output isn't correct
55 Halted 0 ms 0 KB -