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답안 #635218

# 제출 시각 아이디 문제 언어 결과 실행 시간 메모리
635218 2022-08-25T16:50:32 Z youngyojun 수천개의 섬 (IOI22_islands) C++17
100 / 100
 133 ms 16744 KB 
#include "islands.h"
#include <bits/stdc++.h>
#define eb emplace_back
#define sz(V) ((int)(V).size())
#define allv(V) ((V).begin()),((V).end())
#define delv(V,x) (V).erase(find(allv(V),(x)))
using namespace std;

const int MAXN = 100'055;
const int MAXM = 200'055;

vector<int> G[MAXN], T[MAXN];

int oc[MAXN];
bitset<MAXM> dead;

variant<bool, vector<int>> find_journey(int N, int M, vector<int> A, vector<int> B) {
	for(int i = M; i--;) {
		G[A[i]].eb(i);
		T[B[i]].eb(i);
		oc[A[i]]++;
	}

	vector<int> PV;
	int S = 0;

	vector<int> ZV;
	for(int i = N; i--;) if(!oc[i]) ZV.eb(i);
	while(1 == oc[S] || !ZV.empty()) {
		if(1 == oc[S]) {
			int e = *find_if(allv(G[S]), [&](int e){ return !dead[e]; });
			PV.eb(e);
			dead[e] = true;
			oc[S] = 0;
			ZV.eb(S);
			S = B[e];
		}

		int i = ZV.back(); ZV.pop_back();

		for(int e : T[i]) {
			dead[e] = true;
			int v = A[e];
			if(!--oc[v]) ZV.eb(v);
		}
	}

	for(int i = N; i--;) G[i].clear();
	for(int i = M; i--;) if(!dead[i]) G[A[i]].eb(i);

	if(G[S].empty()) return false;

	for(int i = N; i--;)
		G[i].resize(i == S ? 2 : 1);
	for(int i = M; i--;) A[i] ^= B[i];

	dead.reset();

	vector<int> CV;
	int pve = -1, v = S;
	do {
		for(int e : G[v]) if(e != pve) {
			CV.eb(e);
			pve = e;
			dead[e] = !dead[e];
			delv(G[v], e);
			v ^= A[e];
			G[v].eb(e);
			break;
		}
	} while(v != S || dead.any());

	vector<int> r = PV;
	r.insert(r.end(), allv(CV));
	reverse(allv(PV));
	r.insert(r.end(), allv(PV));
	return r;
}

Subtask #1
5.0 / 5.0

# 결과 실행 시간 메모리 Grader output
1 Correct 2 ms 4948 KB Output is correct
2 Correct 3 ms 4948 KB Output is correct
3 Correct 3 ms 4948 KB Output is correct
4 Correct 2 ms 4948 KB Output is correct
5 Correct 3 ms 4948 KB Output is correct
6 Correct 3 ms 4948 KB Output is correct
7 Correct 42 ms 9824 KB Output is correct

Subtask #2
5.0 / 5.0

# 결과 실행 시간 메모리 Grader output
1 Correct 2 ms 4948 KB Output is correct
2 Correct 2 ms 4948 KB Output is correct
3 Correct 3 ms 4948 KB Output is correct
4 Correct 3 ms 4948 KB Output is correct
5 Correct 3 ms 4948 KB Output is correct
6 Correct 34 ms 9296 KB Output is correct

Subtask #3
21.0 / 21.0

# 결과 실행 시간 메모리 Grader output
1 Correct 4 ms 5076 KB Output is correct
2 Correct 3 ms 4948 KB Output is correct
3 Correct 2 ms 4948 KB Output is correct
4 Correct 2 ms 4948 KB Output is correct
5 Correct 3 ms 5076 KB Output is correct
6 Correct 3 ms 4948 KB Output is correct
7 Correct 3 ms 4948 KB Output is correct
8 Correct 3 ms 4964 KB Output is correct
9 Correct 2 ms 4948 KB Output is correct
10 Correct 3 ms 5076 KB Output is correct
11 Correct 2 ms 4948 KB Output is correct
12 Correct 3 ms 5076 KB Output is correct
13 Correct 3 ms 4948 KB Output is correct
14 Correct 2 ms 4948 KB Output is correct
15 Correct 2 ms 4948 KB Output is correct
16 Correct 3 ms 4948 KB Output is correct
17 Correct 27 ms 7728 KB Output is correct
18 Correct 19 ms 7584 KB Output is correct
19 Correct 3 ms 4948 KB Output is correct
20 Correct 2 ms 4948 KB Output is correct
21 Correct 3 ms 4948 KB Output is correct
22 Correct 2 ms 4948 KB Output is correct
23 Correct 32 ms 9352 KB Output is correct

Subtask #4
24.0 / 24.0

# 결과 실행 시간 메모리 Grader output
1 Correct 2 ms 4948 KB Output is correct
2 Correct 3 ms 5076 KB Output is correct
3 Correct 36 ms 9748 KB Output is correct
4 Correct 36 ms 9876 KB Output is correct
5 Correct 3 ms 5076 KB Output is correct
6 Correct 4 ms 5076 KB Output is correct
7 Correct 2 ms 4948 KB Output is correct
8 Correct 3 ms 4948 KB Output is correct
9 Correct 2 ms 4948 KB Output is correct
10 Correct 4 ms 5080 KB Output is correct
11 Correct 4 ms 5080 KB Output is correct
12 Correct 5 ms 5080 KB Output is correct
13 Correct 4 ms 5080 KB Output is correct
14 Correct 4 ms 5080 KB Output is correct
15 Correct 4 ms 5208 KB Output is correct
16 Correct 3 ms 5080 KB Output is correct
17 Correct 3 ms 4952 KB Output is correct
18 Correct 4 ms 5076 KB Output is correct
19 Correct 3 ms 5076 KB Output is correct
20 Correct 37 ms 10504 KB Output is correct
21 Correct 38 ms 10124 KB Output is correct
22 Correct 3 ms 5080 KB Output is correct
23 Correct 3 ms 4952 KB Output is correct
24 Correct 3 ms 4952 KB Output is correct
25 Correct 3 ms 5080 KB Output is correct
26 Correct 3 ms 5080 KB Output is correct
27 Correct 38 ms 10192 KB Output is correct
28 Correct 40 ms 10200 KB Output is correct
29 Correct 2 ms 4960 KB Output is correct
30 Correct 46 ms 10840 KB Output is correct
31 Correct 3 ms 4960 KB Output is correct
32 Correct 36 ms 10208 KB Output is correct
33 Correct 41 ms 10208 KB Output is correct
34 Correct 27 ms 7776 KB Output is correct
35 Correct 3 ms 5088 KB Output is correct
36 Correct 32 ms 9476 KB Output is correct
37 Correct 38 ms 10604 KB Output is correct
38 Correct 3 ms 5076 KB Output is correct
39 Correct 31 ms 9548 KB Output is correct
40 Correct 3 ms 5076 KB Output is correct
41 Correct 43 ms 10956 KB Output is correct
42 Correct 38 ms 10340 KB Output is correct
43 Correct 3 ms 5076 KB Output is correct
44 Correct 3 ms 5076 KB Output is correct
45 Correct 3 ms 5076 KB Output is correct
46 Correct 18 ms 7308 KB Output is correct

Subtask #5
45.0 / 45.0

# 결과 실행 시간 메모리 Grader output
1 Correct 2 ms 4948 KB Output is correct
2 Correct 3 ms 4948 KB Output is correct
3 Correct 3 ms 4948 KB Output is correct
4 Correct 2 ms 4948 KB Output is correct
5 Correct 3 ms 4948 KB Output is correct
6 Correct 3 ms 4948 KB Output is correct
7 Correct 42 ms 9824 KB Output is correct
8 Correct 2 ms 4948 KB Output is correct
9 Correct 2 ms 4948 KB Output is correct
10 Correct 3 ms 4948 KB Output is correct
11 Correct 3 ms 4948 KB Output is correct
12 Correct 3 ms 4948 KB Output is correct
13 Correct 34 ms 9296 KB Output is correct
14 Correct 4 ms 5076 KB Output is correct
15 Correct 3 ms 4948 KB Output is correct
16 Correct 2 ms 4948 KB Output is correct
17 Correct 2 ms 4948 KB Output is correct
18 Correct 3 ms 5076 KB Output is correct
19 Correct 3 ms 4948 KB Output is correct
20 Correct 3 ms 4948 KB Output is correct
21 Correct 3 ms 4964 KB Output is correct
22 Correct 2 ms 4948 KB Output is correct
23 Correct 3 ms 5076 KB Output is correct
24 Correct 2 ms 4948 KB Output is correct
25 Correct 3 ms 5076 KB Output is correct
26 Correct 3 ms 4948 KB Output is correct
27 Correct 2 ms 4948 KB Output is correct
28 Correct 2 ms 4948 KB Output is correct
29 Correct 3 ms 4948 KB Output is correct
30 Correct 27 ms 7728 KB Output is correct
31 Correct 19 ms 7584 KB Output is correct
32 Correct 3 ms 4948 KB Output is correct
33 Correct 2 ms 4948 KB Output is correct
34 Correct 3 ms 4948 KB Output is correct
35 Correct 2 ms 4948 KB Output is correct
36 Correct 32 ms 9352 KB Output is correct
37 Correct 3 ms 4948 KB Output is correct
38 Correct 3 ms 4948 KB Output is correct
39 Correct 2 ms 4948 KB Output is correct
40 Correct 3 ms 4948 KB Output is correct
41 Correct 19 ms 7664 KB Output is correct
42 Correct 4 ms 5076 KB Output is correct
43 Correct 37 ms 10484 KB Output is correct
44 Correct 38 ms 10444 KB Output is correct
45 Correct 37 ms 10268 KB Output is correct
46 Correct 2 ms 4948 KB Output is correct
47 Correct 3 ms 4948 KB Output is correct
48 Correct 3 ms 4948 KB Output is correct
49 Correct 3 ms 5076 KB Output is correct
50 Correct 119 ms 16500 KB Output is correct
51 Correct 93 ms 15136 KB Output is correct
52 Correct 96 ms 15104 KB Output is correct
53 Correct 101 ms 15204 KB Output is correct
54 Correct 91 ms 15152 KB Output is correct
55 Correct 105 ms 15216 KB Output is correct
56 Correct 92 ms 15140 KB Output is correct
57 Correct 59 ms 13184 KB Output is correct
58 Correct 130 ms 16328 KB Output is correct
59 Correct 112 ms 14532 KB Output is correct
60 Correct 91 ms 13812 KB Output is correct
61 Correct 98 ms 13748 KB Output is correct
62 Correct 22 ms 7292 KB Output is correct
63 Correct 107 ms 14068 KB Output is correct
64 Correct 26 ms 7968 KB Output is correct
65 Correct 2 ms 4948 KB Output is correct
66 Correct 3 ms 4960 KB Output is correct
67 Correct 92 ms 14552 KB Output is correct
68 Correct 43 ms 10928 KB Output is correct
69 Correct 73 ms 11464 KB Output is correct
70 Correct 4 ms 5076 KB Output is correct
71 Correct 55 ms 10924 KB Output is correct
72 Correct 2 ms 4948 KB Output is correct
73 Correct 81 ms 13072 KB Output is correct
74 Correct 102 ms 15996 KB Output is correct
75 Correct 6 ms 5332 KB Output is correct
76 Correct 42 ms 10044 KB Output is correct
77 Correct 70 ms 13852 KB Output is correct
78 Correct 91 ms 13852 KB Output is correct
79 Correct 2 ms 4948 KB Output is correct
80 Correct 133 ms 16744 KB Output is correct
81 Correct 4 ms 5076 KB Output is correct
82 Correct 37 ms 10188 KB Output is correct
83 Correct 3 ms 5052 KB Output is correct
84 Correct 2 ms 4948 KB Output is correct
85 Correct 41 ms 10292 KB Output is correct
86 Correct 3 ms 5076 KB Output is correct
87 Correct 7 ms 6096 KB Output is correct
88 Correct 4 ms 5204 KB Output is correct
89 Correct 88 ms 13752 KB Output is correct
90 Correct 98 ms 13772 KB Output is correct
91 Correct 115 ms 16196 KB Output is correct
92 Correct 3 ms 4948 KB Output is correct