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답안 #258803

# 제출 시각 아이디 문제 언어 결과 실행 시간 메모리
258803 2020-08-06T14:59:31 Z Saboon 함박 스테이크 (JOI20_hamburg) C++14
21 / 100
 3000 ms 5996 KB 
#include <bits/stdc++.h>
using namespace std;
mt19937 rng(chrono::steady_clock::now().time_since_epoch().count());
typedef long long ll;

const int maxn = 2e5 + 10;
const int inf = 1e9 + 1;

multiset<int> Ls, Ds, Rs, Us;
int L[maxn], R[maxn], D[maxn], U[maxn];
int mark[maxn];
pair<int,int> ans[5];
int rot = 0;

bool check(int,int,int,int);

bool solve(int n, int k){
	if (k == 1){
		bool cor = 1;
		int x = inf-1, y = inf-1;
		for (int i = 1; i <= n; i++)
			if (!mark[i])
				x = min(x, R[i]), y = min(y, U[i]);
		for (int i = 1; i <= n; i++)
			if (!mark[i])
				cor &= (L[i] <= x and x <= R[i] and D[i] <= y and y <= U[i]);
		if (cor)
			ans[k] = {x,y};
		return cor;
	}
	if (k == 2){
		int x = inf-1, y1 = inf-1, y2 = 1;
		for (int i = 1; i <= n; i++)
			if (!mark[i])
				x = min(x, R[i]), y1 = min(y1, U[i]), y2 = max(y2, D[i]);
		bool ret = check(n, k, x, y1);
		if (ret == true)
			return true;
		ret = check(n, k, x, y2);
		return ret;
	}
	if (k == 3){
		int x1 = inf-1, x2 = 1, y1 = inf-1, y2 = 1;
		for (int i = 1; i <= n; i++)
			if (!mark[i])
				x1 = min(x1, R[i]), x2 = max(x2, L[i]), y1 = min(y1, U[i]), y2 = max(y2, D[i]);
		bool ret = check(n, k, x1, y1);
		if (ret == true)
			return true;
		ret = check(n, k, x1, y2);
		if (ret == true)
			return true;
		ret = check(n, k, x2, y1);
		if (ret == true)
			return true;
		ret = check(n, k, x2, y2);
		return ret;
	}
	if (k == 4){
		int x = inf-1;
		for (int i = 1; i <= n; i++)
			x = min(x, R[i]);
		vector<pair<int,int>> seg;
		for (int i = 1; i <= n; i++)
			if (L[i] <= x)
				seg.push_back({D[i],i});
		sort(seg.rbegin(), seg.rend());
		int minl = inf;
		for (auto it : seg){
			int idx = it.second;
			if (U[idx] < minl){
				bool ret = check(n, k, x, U[idx]);
				if (ret)
					return true;
				minl = U[idx];
			}
		}
		int cnt = 0;
		for (int i = 1; i <= n; i++)
			if (L[i] <= x)
				seg[cnt++] = {U[i],i};
		sort(seg.begin(), seg.end());
		int maxr = 0;
		for (auto it : seg){
			int idx = it.second;
			if (maxr < D[idx]){
				bool ret = check(n, k, x, D[idx]);
				if (ret)
					return true;
				maxr = D[idx];
			}
		}
		if (rot == 0){
			for (int i = 1; i <= n; i++){
				int l = L[i], r = R[i], u = U[i], d = D[i];
				L[i] = inf - r, R[i] = inf - l;
			}
			rot ++;
			bool ret = solve(n,k);
			if (ret == true){
				for (int i = 1; i <= k; i++)
					ans[i].first = inf - ans[i].first;
				return true;
			}
		}
	}
	return false;
}

bool check(int n, int k, int x, int y){
	for (int i = 1; i <= n; i++)
		if (!mark[i] and L[i] <= x and x <= R[i] and D[i] <= y and y <= U[i])
			mark[i] = k;
	ans[k] = {x,y};
	bool ret = solve(n, k-1);
	if (ret == true)
		return true;
	for (int i = 1; i <= n; i++)
		if (mark[i] == k)
			mark[i] = 0;
	return false;
}

int main(){
	ios_base::sync_with_stdio(false);
	int n, k;
	cin >> n >> k;
	for (int i = 1; i <= n; i++)
		cin >> L[i] >> D[i] >> R[i] >> U[i];
	bool solved = solve(n, k);
	assert(solved);
	for (int i = 1; i <= k; i++)
		cout << ans[i].first << " " << ans[i].second << endl;
}

Compilation message

hamburg.cpp: In function 'bool solve(int, int)':
hamburg.cpp:95:29: warning: unused variable 'u' [-Wunused-variable]
   95 |     int l = L[i], r = R[i], u = U[i], d = D[i];
      |                             ^
hamburg.cpp:95:39: warning: unused variable 'd' [-Wunused-variable]
   95 |     int l = L[i], r = R[i], u = U[i], d = D[i];
      |                                       ^

Subtask #1
1.0 / 1.0

# 결과 실행 시간 메모리 Grader output
1 Correct 1 ms 384 KB Output is correct
2 Correct 2 ms 384 KB Output is correct
3 Correct 1 ms 384 KB Output is correct
4 Correct 2 ms 384 KB Output is correct

Subtask #2
1.0 / 1.0

# 결과 실행 시간 메모리 Grader output
1 Correct 1 ms 384 KB Output is correct
2 Correct 2 ms 384 KB Output is correct
3 Correct 1 ms 384 KB Output is correct
4 Correct 2 ms 384 KB Output is correct

Subtask #3
3.0 / 3.0

# 결과 실행 시간 메모리 Grader output
1 Correct 2 ms 384 KB Output is correct
2 Correct 2 ms 384 KB Output is correct
3 Correct 1 ms 384 KB Output is correct
4 Correct 1 ms 384 KB Output is correct
5 Correct 1 ms 384 KB Output is correct
6 Correct 1 ms 384 KB Output is correct
7 Correct 1 ms 384 KB Output is correct
8 Correct 2 ms 440 KB Output is correct
9 Correct 3 ms 384 KB Output is correct
10 Correct 2 ms 384 KB Output is correct
11 Correct 2 ms 384 KB Output is correct
12 Correct 2 ms 384 KB Output is correct

Subtask #4
6.0 / 6.0

# 결과 실행 시간 메모리 Grader output
1 Correct 4 ms 384 KB Output is correct
2 Correct 2 ms 384 KB Output is correct
3 Correct 2 ms 384 KB Output is correct
4 Correct 4 ms 496 KB Output is correct
5 Correct 4 ms 384 KB Output is correct
6 Correct 4 ms 384 KB Output is correct
7 Correct 12 ms 476 KB Output is correct
8 Correct 10 ms 384 KB Output is correct
9 Correct 5 ms 384 KB Output is correct
10 Correct 5 ms 384 KB Output is correct
11 Correct 11 ms 384 KB Output is correct
12 Correct 4 ms 384 KB Output is correct
13 Correct 11 ms 384 KB Output is correct
14 Correct 8 ms 512 KB Output is correct
15 Correct 7 ms 384 KB Output is correct
16 Correct 9 ms 384 KB Output is correct
17 Correct 7 ms 384 KB Output is correct
18 Correct 9 ms 384 KB Output is correct
19 Correct 8 ms 384 KB Output is correct
20 Correct 4 ms 384 KB Output is correct
21 Correct 10 ms 384 KB Output is correct
22 Correct 7 ms 384 KB Output is correct
23 Correct 8 ms 384 KB Output is correct
24 Correct 13 ms 384 KB Output is correct
25 Correct 5 ms 384 KB Output is correct
26 Correct 4 ms 384 KB Output is correct
27 Correct 5 ms 384 KB Output is correct
28 Correct 14 ms 384 KB Output is correct
29 Correct 16 ms 488 KB Output is correct
30 Correct 3 ms 384 KB Output is correct
31 Correct 7 ms 384 KB Output is correct
32 Correct 7 ms 384 KB Output is correct
33 Correct 9 ms 496 KB Output is correct
34 Correct 7 ms 384 KB Output is correct
35 Correct 6 ms 384 KB Output is correct
36 Correct 8 ms 384 KB Output is correct
37 Correct 27 ms 488 KB Output is correct
38 Correct 6 ms 384 KB Output is correct
39 Correct 19 ms 384 KB Output is correct
40 Correct 7 ms 384 KB Output is correct
41 Correct 7 ms 384 KB Output is correct
42 Correct 10 ms 384 KB Output is correct
43 Correct 13 ms 384 KB Output is correct
44 Correct 4 ms 384 KB Output is correct
45 Correct 5 ms 384 KB Output is correct
46 Correct 6 ms 384 KB Output is correct
47 Correct 6 ms 384 KB Output is correct
48 Correct 6 ms 512 KB Output is correct
49 Correct 8 ms 384 KB Output is correct
50 Correct 5 ms 416 KB Output is correct
51 Correct 8 ms 384 KB Output is correct
52 Correct 5 ms 384 KB Output is correct
53 Correct 3 ms 384 KB Output is correct
54 Correct 5 ms 384 KB Output is correct
55 Correct 9 ms 384 KB Output is correct
56 Correct 10 ms 384 KB Output is correct
57 Correct 13 ms 384 KB Output is correct
58 Correct 15 ms 384 KB Output is correct

Subtask #5
1.0 / 1.0

# 결과 실행 시간 메모리 Grader output
1 Correct 1 ms 384 KB Output is correct
2 Correct 2 ms 384 KB Output is correct
3 Correct 1 ms 384 KB Output is correct
4 Correct 2 ms 384 KB Output is correct
5 Correct 99 ms 3448 KB Output is correct
6 Correct 107 ms 3448 KB Output is correct
7 Correct 105 ms 3448 KB Output is correct
8 Correct 100 ms 3476 KB Output is correct

Subtask #6
3.0 / 3.0

# 결과 실행 시간 메모리 Grader output
1 Correct 1 ms 384 KB Output is correct
2 Correct 2 ms 384 KB Output is correct
3 Correct 1 ms 384 KB Output is correct
4 Correct 2 ms 384 KB Output is correct
5 Correct 108 ms 4288 KB Output is correct
6 Correct 114 ms 4216 KB Output is correct
7 Correct 98 ms 4216 KB Output is correct
8 Correct 102 ms 4216 KB Output is correct

Subtask #7
6.0 / 6.0

# 결과 실행 시간 메모리 Grader output
1 Correct 2 ms 384 KB Output is correct
2 Correct 2 ms 384 KB Output is correct
3 Correct 1 ms 384 KB Output is correct
4 Correct 1 ms 384 KB Output is correct
5 Correct 1 ms 384 KB Output is correct
6 Correct 1 ms 384 KB Output is correct
7 Correct 1 ms 384 KB Output is correct
8 Correct 2 ms 440 KB Output is correct
9 Correct 3 ms 384 KB Output is correct
10 Correct 2 ms 384 KB Output is correct
11 Correct 2 ms 384 KB Output is correct
12 Correct 2 ms 384 KB Output is correct
13 Correct 103 ms 4180 KB Output is correct
14 Correct 105 ms 4292 KB Output is correct
15 Correct 104 ms 4344 KB Output is correct
16 Correct 98 ms 4224 KB Output is correct
17 Correct 107 ms 4216 KB Output is correct
18 Correct 98 ms 4276 KB Output is correct
19 Correct 145 ms 4216 KB Output is correct
20 Correct 121 ms 4216 KB Output is correct
21 Correct 162 ms 4344 KB Output is correct
22 Correct 124 ms 4216 KB Output is correct
23 Correct 110 ms 4216 KB Output is correct
24 Correct 126 ms 4472 KB Output is correct

Subtask #8
0 / 79.0

# 결과 실행 시간 메모리 Grader output
1 Correct 4 ms 384 KB Output is correct
2 Correct 2 ms 384 KB Output is correct
3 Correct 2 ms 384 KB Output is correct
4 Correct 4 ms 496 KB Output is correct
5 Correct 4 ms 384 KB Output is correct
6 Correct 4 ms 384 KB Output is correct
7 Correct 12 ms 476 KB Output is correct
8 Correct 10 ms 384 KB Output is correct
9 Correct 5 ms 384 KB Output is correct
10 Correct 5 ms 384 KB Output is correct
11 Correct 11 ms 384 KB Output is correct
12 Correct 4 ms 384 KB Output is correct
13 Correct 11 ms 384 KB Output is correct
14 Correct 8 ms 512 KB Output is correct
15 Correct 7 ms 384 KB Output is correct
16 Correct 9 ms 384 KB Output is correct
17 Correct 7 ms 384 KB Output is correct
18 Correct 9 ms 384 KB Output is correct
19 Correct 8 ms 384 KB Output is correct
20 Correct 4 ms 384 KB Output is correct
21 Correct 10 ms 384 KB Output is correct
22 Correct 7 ms 384 KB Output is correct
23 Correct 8 ms 384 KB Output is correct
24 Correct 13 ms 384 KB Output is correct
25 Correct 5 ms 384 KB Output is correct
26 Correct 4 ms 384 KB Output is correct
27 Correct 5 ms 384 KB Output is correct
28 Correct 14 ms 384 KB Output is correct
29 Correct 16 ms 488 KB Output is correct
30 Correct 3 ms 384 KB Output is correct
31 Correct 7 ms 384 KB Output is correct
32 Correct 7 ms 384 KB Output is correct
33 Correct 9 ms 496 KB Output is correct
34 Correct 7 ms 384 KB Output is correct
35 Correct 6 ms 384 KB Output is correct
36 Correct 8 ms 384 KB Output is correct
37 Correct 27 ms 488 KB Output is correct
38 Correct 6 ms 384 KB Output is correct
39 Correct 19 ms 384 KB Output is correct
40 Correct 7 ms 384 KB Output is correct
41 Correct 7 ms 384 KB Output is correct
42 Correct 10 ms 384 KB Output is correct
43 Correct 13 ms 384 KB Output is correct
44 Correct 4 ms 384 KB Output is correct
45 Correct 5 ms 384 KB Output is correct
46 Correct 6 ms 384 KB Output is correct
47 Correct 6 ms 384 KB Output is correct
48 Correct 6 ms 512 KB Output is correct
49 Correct 8 ms 384 KB Output is correct
50 Correct 5 ms 416 KB Output is correct
51 Correct 8 ms 384 KB Output is correct
52 Correct 5 ms 384 KB Output is correct
53 Correct 3 ms 384 KB Output is correct
54 Correct 5 ms 384 KB Output is correct
55 Correct 9 ms 384 KB Output is correct
56 Correct 10 ms 384 KB Output is correct
57 Correct 13 ms 384 KB Output is correct
58 Correct 15 ms 384 KB Output is correct
59 Correct 587 ms 4976 KB Output is correct
60 Correct 657 ms 5996 KB Output is correct
61 Correct 471 ms 5360 KB Output is correct
62 Correct 416 ms 5992 KB Output is correct
63 Correct 431 ms 4976 KB Output is correct
64 Correct 345 ms 5900 KB Output is correct
65 Correct 2092 ms 5232 KB Output is correct
66 Correct 1990 ms 5616 KB Output is correct
67 Correct 1256 ms 4724 KB Output is correct
68 Correct 2931 ms 5232 KB Output is correct
69 Correct 2317 ms 5232 KB Output is correct
70 Correct 927 ms 4968 KB Output is correct
71 Correct 1264 ms 5232 KB Output is correct
72 Correct 1336 ms 5104 KB Output is correct
73 Correct 1105 ms 5008 KB Output is correct
74 Correct 2476 ms 4976 KB Output is correct
75 Correct 1095 ms 5616 KB Output is correct
76 Correct 2877 ms 5616 KB Output is correct
77 Correct 869 ms 5244 KB Output is correct
78 Execution timed out 3076 ms 5876 KB Time limit exceeded
79 Halted 0 ms 0 KB -