oj.uz

답안 #841571

# 제출 시각 아이디 문제 언어 결과 실행 시간 메모리
841571 2023-09-01T17:11:52 Z TheLostCookie 가장 긴 여행 (IOI23_longesttrip) C++17
100 / 100
 10 ms 856 KB 
#include "longesttrip.h"
#include <functional>
#include <vector>

std::vector<int> longest_trip(int N, int D) {
	//Invariant: l0.back() and l1.back() are NOT connected.
	std::vector<int> l0,l1;
	
	auto mergeLines = [&l0, &l1]()->void{
		while(!l1.empty()) {
			l0.push_back(l1.back());
			l1.pop_back();
		}
		return;
	};
	
	auto q = [](int u, int v)->bool{
		return are_connected({u},{v});
	};
	
	l0.push_back(0);
	int u=1;
	while(u<N) {
		if(l1.empty()) {
			(q(l0.back(),u)?l0:l1).push_back(u);
			u++;
		} else if(u==N-1) {
			if(!q(l0.back(),u)) l1.push_back(u);
			else {
				l0.push_back(u);
				if(q(l1.back(),u)) {
					mergeLines();
				}
			}
			u++;
		} else {
			int v=u+1;
			bool b0 = q(l0.back(),u), b1 = q(l1.back(),v), b2 = q(u,v);
			if(b0&&b1) {
				l0.push_back(u);
				l1.push_back(v);
				if(b2) mergeLines();
			} else if(!b0&&!b1) {
				l0.push_back(v);
				l1.push_back(u);
				if(b2) mergeLines();
			} else if(b0&&!b1) {
				if(b2) {
					l0.push_back(u);
					l0.push_back(v);
				} else {
					l1.push_back(u);
					l0.push_back(v);
				}
			} else {
				if(b2) {
					l1.push_back(v);
					l1.push_back(u);
				} else {
					l0.push_back(v);
					l1.push_back(u);
				}
			}
			u+=2;
		}
	}
	
	if(l1.empty()) return l0;
	else if(!are_connected(l0,l1)) {
		if(l0.size()>l1.size()) return l0;
		else return l1;
	} else if(l0.size()>1&&(!are_connected({l0.front()},{l0.back()}))) {
		std::reverse(l0.begin(),l0.end());
		mergeLines();
		return l0;
	} else if(l1.size()>1&&(!are_connected({l1.front()},{l1.back()}))) {
		std::reverse(l1.begin(),l1.end());
		mergeLines();
		return l0;
	} else {
		std::vector<int> le(l0), ri(l1);
		for(int rep = 0; rep < 2; rep++) {
			while(le.size()>1) {
				std::vector<int> le0,le1;
				for(int i = 0; i < int(le.size()); i++) {
					(i%2?le0:le1).push_back(le[i]);
				}
				if(are_connected(le0,ri)) std::swap(le,le0);
				else std::swap(le,le1);
			}
			swap(le,ri);
		}
		int lei = 0, rii = 0;
		while(l0[lei] != le[0]) lei++;
		while(l1[rii] != ri[0]) rii++;
		
		std::vector<int> ans;
		for(int i = 0; i < int(l0.size()); i++) {
			ans.push_back(l0[(lei+i+1)%l0.size()]);
		}
		for(int i = 0; i < int(l1.size()); i++) {
			ans.push_back(l1[(rii+i)%l1.size()]);
		}
		return ans;
	}
}

Subtask #0
0.0 / 0.0

# 결과 실행 시간 메모리 Grader output
1 Correct 0 ms 344 KB Output is correct
2 Correct 2 ms 600 KB Output is correct

Subtask #1
5.0 / 5.0

# 결과 실행 시간 메모리 Grader output
1 Correct 5 ms 344 KB Output is correct
2 Correct 5 ms 344 KB Output is correct
3 Correct 4 ms 344 KB Output is correct
4 Correct 4 ms 344 KB Output is correct
5 Correct 4 ms 344 KB Output is correct

Subtask #2
10.0 / 10.0

# 결과 실행 시간 메모리 Grader output
1 Correct 5 ms 344 KB Output is correct
2 Correct 4 ms 344 KB Output is correct
3 Correct 4 ms 344 KB Output is correct
4 Correct 4 ms 344 KB Output is correct
5 Correct 4 ms 600 KB Output is correct
6 Correct 9 ms 344 KB Output is correct
7 Correct 6 ms 344 KB Output is correct
8 Correct 5 ms 344 KB Output is correct
9 Correct 4 ms 344 KB Output is correct
10 Correct 4 ms 600 KB Output is correct
11 Correct 4 ms 344 KB Output is correct
12 Correct 4 ms 344 KB Output is correct
13 Correct 5 ms 344 KB Output is correct

Subtask #3
25.0 / 25.0

# 결과 실행 시간 메모리 Grader output
1 Correct 5 ms 344 KB Output is correct
2 Correct 4 ms 344 KB Output is correct
3 Correct 4 ms 344 KB Output is correct
4 Correct 4 ms 344 KB Output is correct
5 Correct 4 ms 344 KB Output is correct
6 Correct 8 ms 596 KB Output is correct
7 Correct 5 ms 344 KB Output is correct
8 Correct 4 ms 344 KB Output is correct
9 Correct 4 ms 344 KB Output is correct
10 Correct 5 ms 344 KB Output is correct
11 Correct 5 ms 344 KB Output is correct
12 Correct 4 ms 344 KB Output is correct
13 Correct 4 ms 600 KB Output is correct
14 Correct 10 ms 344 KB Output is correct
15 Correct 7 ms 344 KB Output is correct
16 Correct 10 ms 344 KB Output is correct
17 Correct 6 ms 344 KB Output is correct
18 Correct 5 ms 344 KB Output is correct
19 Correct 5 ms 600 KB Output is correct
20 Correct 5 ms 420 KB Output is correct
21 Correct 5 ms 344 KB Output is correct
22 Correct 6 ms 344 KB Output is correct
23 Correct 5 ms 428 KB Output is correct
24 Correct 5 ms 344 KB Output is correct
25 Correct 7 ms 344 KB Output is correct
26 Correct 6 ms 344 KB Output is correct
27 Correct 5 ms 344 KB Output is correct
28 Correct 6 ms 344 KB Output is correct
29 Correct 9 ms 344 KB Output is correct
30 Correct 6 ms 344 KB Output is correct
31 Correct 6 ms 344 KB Output is correct
32 Correct 6 ms 344 KB Output is correct
33 Correct 5 ms 344 KB Output is correct
34 Correct 6 ms 344 KB Output is correct
35 Correct 6 ms 344 KB Output is correct
36 Correct 9 ms 344 KB Output is correct
37 Correct 7 ms 600 KB Output is correct
38 Correct 7 ms 344 KB Output is correct
39 Correct 7 ms 344 KB Output is correct
40 Correct 7 ms 344 KB Output is correct
41 Correct 7 ms 600 KB Output is correct
42 Correct 8 ms 344 KB Output is correct
43 Correct 6 ms 344 KB Output is correct
44 Correct 7 ms 344 KB Output is correct
45 Correct 7 ms 344 KB Output is correct
46 Correct 10 ms 344 KB Output is correct
47 Correct 8 ms 344 KB Output is correct
48 Correct 6 ms 344 KB Output is correct
49 Correct 7 ms 344 KB Output is correct
50 Correct 6 ms 424 KB Output is correct
51 Correct 7 ms 424 KB Output is correct
52 Correct 7 ms 356 KB Output is correct
53 Correct 6 ms 344 KB Output is correct
54 Correct 6 ms 600 KB Output is correct
55 Correct 7 ms 344 KB Output is correct
56 Correct 5 ms 424 KB Output is correct
57 Correct 7 ms 856 KB Output is correct
58 Correct 7 ms 600 KB Output is correct
59 Correct 7 ms 600 KB Output is correct
60 Correct 7 ms 424 KB Output is correct
61 Correct 7 ms 344 KB Output is correct
62 Correct 7 ms 604 KB Output is correct
63 Correct 7 ms 428 KB Output is correct
64 Correct 6 ms 428 KB Output is correct

Subtask #4
60.0 / 60.0

# 결과 실행 시간 메모리 Grader output
1 Correct 6 ms 344 KB Output is correct
2 Correct 5 ms 344 KB Output is correct
3 Correct 4 ms 344 KB Output is correct
4 Correct 5 ms 344 KB Output is correct
5 Correct 4 ms 344 KB Output is correct
6 Correct 7 ms 344 KB Output is correct
7 Correct 5 ms 344 KB Output is correct
8 Correct 4 ms 344 KB Output is correct
9 Correct 5 ms 344 KB Output is correct
10 Correct 4 ms 600 KB Output is correct
11 Correct 4 ms 344 KB Output is correct
12 Correct 4 ms 600 KB Output is correct
13 Correct 4 ms 344 KB Output is correct
14 Correct 8 ms 344 KB Output is correct
15 Correct 7 ms 344 KB Output is correct
16 Correct 8 ms 344 KB Output is correct
17 Correct 7 ms 344 KB Output is correct
18 Correct 7 ms 344 KB Output is correct
19 Correct 5 ms 600 KB Output is correct
20 Correct 5 ms 600 KB Output is correct
21 Correct 7 ms 344 KB Output is correct
22 Correct 7 ms 344 KB Output is correct
23 Correct 8 ms 344 KB Output is correct
24 Correct 6 ms 344 KB Output is correct
25 Correct 6 ms 344 KB Output is correct
26 Correct 5 ms 344 KB Output is correct
27 Correct 6 ms 344 KB Output is correct
28 Correct 7 ms 344 KB Output is correct
29 Correct 5 ms 344 KB Output is correct
30 Correct 6 ms 344 KB Output is correct
31 Correct 6 ms 344 KB Output is correct
32 Correct 7 ms 344 KB Output is correct
33 Correct 9 ms 344 KB Output is correct
34 Correct 7 ms 344 KB Output is correct
35 Correct 10 ms 504 KB Output is correct
36 Correct 8 ms 344 KB Output is correct
37 Correct 5 ms 424 KB Output is correct
38 Correct 7 ms 424 KB Output is correct
39 Correct 7 ms 344 KB Output is correct
40 Correct 6 ms 600 KB Output is correct
41 Correct 7 ms 344 KB Output is correct
42 Correct 7 ms 344 KB Output is correct
43 Correct 5 ms 344 KB Output is correct
44 Correct 5 ms 344 KB Output is correct
45 Correct 5 ms 428 KB Output is correct
46 Correct 5 ms 344 KB Output is correct
47 Correct 5 ms 344 KB Output is correct
48 Correct 7 ms 344 KB Output is correct
49 Correct 6 ms 344 KB Output is correct
50 Correct 7 ms 600 KB Output is correct
51 Correct 7 ms 344 KB Output is correct
52 Correct 7 ms 344 KB Output is correct
53 Correct 6 ms 600 KB Output is correct
54 Correct 6 ms 344 KB Output is correct
55 Correct 8 ms 600 KB Output is correct
56 Correct 8 ms 600 KB Output is correct
57 Correct 6 ms 344 KB Output is correct
58 Correct 10 ms 420 KB Output is correct
59 Correct 8 ms 600 KB Output is correct
60 Correct 6 ms 344 KB Output is correct
61 Correct 8 ms 600 KB Output is correct
62 Correct 5 ms 432 KB Output is correct
63 Correct 7 ms 600 KB Output is correct
64 Correct 7 ms 604 KB Output is correct
65 Correct 6 ms 600 KB Output is correct
66 Correct 6 ms 600 KB Output is correct
67 Correct 7 ms 344 KB Output is correct
68 Correct 8 ms 424 KB Output is correct
69 Correct 6 ms 604 KB Output is correct
70 Correct 6 ms 600 KB Output is correct
71 Correct 6 ms 600 KB Output is correct
72 Correct 6 ms 600 KB Output is correct
73 Correct 7 ms 420 KB Output is correct
74 Correct 7 ms 428 KB Output is correct
75 Correct 8 ms 504 KB Output is correct
76 Correct 8 ms 428 KB Output is correct
77 Correct 6 ms 600 KB Output is correct
78 Correct 6 ms 600 KB Output is correct
79 Correct 8 ms 604 KB Output is correct
80 Correct 7 ms 600 KB Output is correct
81 Correct 8 ms 424 KB Output is correct
82 Correct 7 ms 600 KB Output is correct