oj.uz

Submission #697403

# Submission time Handle Problem Language Result Execution time Memory
697403 2023-02-09T16:36:10 Z youngyojun Connecting Supertrees (IOI20_supertrees) C++17
100 / 100
 211 ms 28128 KB 
#include "supertrees.h"
#include <bits/stdc++.h>
#define eb emplace_back
#define sz(V) ((int)(V).size())
#define allv(V) ((V).begin()),((V).end())
#define univ(V) (V).erase(unique(allv(V)),(V).end())
using namespace std;
typedef pair<int, int> pii;

int construct(vector<vector<int>> A) {
	int N = A.size();

	for(int i = N; i--;) for(int j = N; j--;)
		if(2 < A[i][j]) return 0;
	
	vector<int> B(N, -1);
	for(int i = 0; i < N; i++) if(B[i] < 0) {
		for(int j = i; j < N; j++) if(1 == A[i][j]) B[j] = i;
	}

	vector<vector<int>> Cy, Co;
	vector<bool> chk(N, false);

	for(int i = 0; i < N; i++) if(!chk[i]) {
		vector<int> V, U; V.eb(B[i]);
		for(int j = 0; j < N; j++) if(A[i][j]) {
			U.eb(j);
			if(1 == A[i][j]) {
				if(chk[j]) return 0;
				chk[j] = true;
			} else {
				if(chk[j]) return 0;
				chk[j] = true;
				V.eb(B[j]);
			}
		}
		sort(allv(V)); univ(V);
		if(2 == sz(V)) return 0;
		Cy.eb(V); Co.eb(U);
	}

	vector<vector<int>> D(N, vector<int>(N, 0));
	vector<pii> EV;

	for(int ci = 0, cn = sz(Cy); ci < cn; ci++) {
		auto &cycle = Cy[ci], &comp = Co[ci];

		for(int a : comp) for(int b : comp) D[a][b] = 2;
		for(int r : cycle) {
			vector<int> V;
			for(int v : comp) if(r == B[v]) V.eb(v);
			for(int v : V) EV.eb(r, v);
			for(int a : V) for(int b : V) D[a][b] = 1;
		}

		int L = sz(cycle);
		if(1 < L) {
			for(int i = 0, j = 1; i < L; i++, j++) {
				if(j == L) j = 0;
				EV.eb(cycle[i], cycle[j]);
			}
		}
	}

	for(int i = 0; i < N; i++) if(D[i] != A[i]) return 0;

	vector<vector<int>> ret(N, vector<int>(N, 0));
	for(auto [a, b] : EV) if(a != b) ret[a][b] = ret[b][a] = 1;

	build(ret);
	return 1;
}

Subtask #1
11.0 / 11.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 212 KB Output is correct
2 Correct 0 ms 212 KB Output is correct
3 Correct 0 ms 212 KB Output is correct
4 Correct 0 ms 212 KB Output is correct
5 Correct 1 ms 212 KB Output is correct
6 Correct 8 ms 1340 KB Output is correct
7 Correct 166 ms 26492 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 0 ms 212 KB Output is correct
3 Correct 0 ms 212 KB Output is correct
4 Correct 0 ms 212 KB Output is correct
5 Correct 1 ms 212 KB Output is correct
6 Correct 8 ms 1340 KB Output is correct
7 Correct 166 ms 26492 KB Output is correct
8 Correct 1 ms 212 KB Output is correct
9 Correct 1 ms 212 KB Output is correct
10 Correct 1 ms 212 KB Output is correct
11 Correct 1 ms 212 KB Output is correct
12 Correct 7 ms 1364 KB Output is correct
13 Correct 166 ms 26608 KB Output is correct
14 Correct 1 ms 304 KB Output is correct
15 Correct 1 ms 300 KB Output is correct
16 Correct 4 ms 596 KB Output is correct
17 Correct 79 ms 8692 KB Output is correct
18 Correct 0 ms 212 KB Output is correct
19 Correct 1 ms 212 KB Output is correct
20 Correct 42 ms 7284 KB Output is correct
21 Correct 169 ms 26528 KB Output is correct
22 Correct 173 ms 26548 KB Output is correct
23 Correct 189 ms 26488 KB Output is correct
24 Correct 168 ms 26544 KB Output is correct
25 Correct 89 ms 12584 KB Output is correct
26 Correct 66 ms 8664 KB Output is correct
27 Correct 180 ms 26480 KB Output is correct
28 Correct 211 ms 26592 KB Output is correct

Subtask #3
19.0 / 19.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 212 KB Output is correct
2 Correct 1 ms 252 KB Output is correct
3 Correct 1 ms 212 KB Output is correct
4 Correct 1 ms 212 KB Output is correct
5 Correct 1 ms 212 KB Output is correct
6 Correct 1 ms 300 KB Output is correct
7 Correct 1 ms 300 KB Output is correct
8 Correct 7 ms 1364 KB Output is correct
9 Correct 178 ms 26604 KB Output is correct
10 Correct 1 ms 212 KB Output is correct
11 Correct 1 ms 212 KB Output is correct
12 Correct 8 ms 1364 KB Output is correct
13 Correct 183 ms 26468 KB Output is correct
14 Correct 1 ms 212 KB Output is correct
15 Correct 1 ms 212 KB Output is correct
16 Correct 3 ms 700 KB Output is correct
17 Correct 77 ms 8600 KB Output is correct
18 Correct 1 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 44 ms 7264 KB Output is correct
22 Correct 163 ms 27888 KB Output is correct
23 Correct 182 ms 28128 KB Output is correct
24 Correct 180 ms 27888 KB Output is correct
25 Correct 68 ms 10152 KB Output is correct
26 Correct 74 ms 14076 KB Output is correct
27 Correct 167 ms 27888 KB Output is correct
28 Correct 180 ms 27964 KB Output is correct
29 Correct 75 ms 10228 KB Output is correct

Subtask #4
35.0 / 35.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 212 KB Output is correct
2 Correct 0 ms 212 KB Output is correct
3 Correct 1 ms 292 KB Output is correct
4 Correct 43 ms 7256 KB Output is correct
5 Correct 163 ms 26468 KB Output is correct
6 Correct 183 ms 26460 KB Output is correct
7 Correct 199 ms 26500 KB Output is correct
8 Correct 1 ms 340 KB Output is correct
9 Correct 47 ms 7284 KB Output is correct
10 Correct 162 ms 27956 KB Output is correct
11 Correct 189 ms 27908 KB Output is correct
12 Correct 172 ms 27936 KB Output is correct
13 Correct 1 ms 212 KB Output is correct
14 Correct 1 ms 304 KB Output is correct
15 Correct 1 ms 212 KB Output is correct
16 Correct 43 ms 7192 KB Output is correct
17 Correct 161 ms 27876 KB Output is correct
18 Correct 165 ms 27916 KB Output is correct
19 Correct 165 ms 27892 KB Output is correct
20 Correct 167 ms 28044 KB Output is correct

Subtask #5
21.0 / 21.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 212 KB Output is correct
2 Correct 0 ms 212 KB Output is correct
3 Correct 0 ms 212 KB Output is correct
4 Correct 0 ms 212 KB Output is correct
5 Correct 1 ms 212 KB Output is correct
6 Correct 8 ms 1340 KB Output is correct
7 Correct 166 ms 26492 KB Output is correct
8 Correct 1 ms 212 KB Output is correct
9 Correct 1 ms 212 KB Output is correct
10 Correct 1 ms 212 KB Output is correct
11 Correct 1 ms 212 KB Output is correct
12 Correct 7 ms 1364 KB Output is correct
13 Correct 166 ms 26608 KB Output is correct
14 Correct 1 ms 304 KB Output is correct
15 Correct 1 ms 300 KB Output is correct
16 Correct 4 ms 596 KB Output is correct
17 Correct 79 ms 8692 KB Output is correct
18 Correct 0 ms 212 KB Output is correct
19 Correct 1 ms 212 KB Output is correct
20 Correct 42 ms 7284 KB Output is correct
21 Correct 169 ms 26528 KB Output is correct
22 Correct 173 ms 26548 KB Output is correct
23 Correct 189 ms 26488 KB Output is correct
24 Correct 168 ms 26544 KB Output is correct
25 Correct 89 ms 12584 KB Output is correct
26 Correct 66 ms 8664 KB Output is correct
27 Correct 180 ms 26480 KB Output is correct
28 Correct 211 ms 26592 KB Output is correct
29 Correct 1 ms 212 KB Output is correct
30 Correct 1 ms 252 KB Output is correct
31 Correct 1 ms 212 KB Output is correct
32 Correct 1 ms 212 KB Output is correct
33 Correct 1 ms 212 KB Output is correct
34 Correct 1 ms 300 KB Output is correct
35 Correct 1 ms 300 KB Output is correct
36 Correct 7 ms 1364 KB Output is correct
37 Correct 178 ms 26604 KB Output is correct
38 Correct 1 ms 212 KB Output is correct
39 Correct 1 ms 212 KB Output is correct
40 Correct 8 ms 1364 KB Output is correct
41 Correct 183 ms 26468 KB Output is correct
42 Correct 1 ms 212 KB Output is correct
43 Correct 1 ms 212 KB Output is correct
44 Correct 3 ms 700 KB Output is correct
45 Correct 77 ms 8600 KB Output is correct
46 Correct 1 ms 212 KB Output is correct
47 Correct 1 ms 212 KB Output is correct
48 Correct 1 ms 212 KB Output is correct
49 Correct 44 ms 7264 KB Output is correct
50 Correct 163 ms 27888 KB Output is correct
51 Correct 182 ms 28128 KB Output is correct
52 Correct 180 ms 27888 KB Output is correct
53 Correct 68 ms 10152 KB Output is correct
54 Correct 74 ms 14076 KB Output is correct
55 Correct 167 ms 27888 KB Output is correct
56 Correct 180 ms 27964 KB Output is correct
57 Correct 75 ms 10228 KB Output is correct
58 Correct 0 ms 212 KB Output is correct
59 Correct 1 ms 212 KB Output is correct
60 Correct 3 ms 696 KB Output is correct
61 Correct 70 ms 10104 KB Output is correct
62 Correct 1 ms 212 KB Output is correct
63 Correct 1 ms 212 KB Output is correct
64 Correct 1 ms 212 KB Output is correct
65 Correct 45 ms 7288 KB Output is correct
66 Correct 68 ms 14136 KB Output is correct
67 Correct 68 ms 14084 KB Output is correct
68 Correct 70 ms 14084 KB Output is correct
69 Correct 67 ms 10100 KB Output is correct

Subtask #6
4.0 / 4.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 212 KB Output is correct
2 Correct 0 ms 212 KB Output is correct
3 Correct 0 ms 212 KB Output is correct
4 Correct 0 ms 212 KB Output is correct
5 Correct 1 ms 212 KB Output is correct
6 Correct 8 ms 1340 KB Output is correct
7 Correct 166 ms 26492 KB Output is correct
8 Correct 1 ms 212 KB Output is correct
9 Correct 1 ms 212 KB Output is correct
10 Correct 1 ms 212 KB Output is correct
11 Correct 1 ms 212 KB Output is correct
12 Correct 7 ms 1364 KB Output is correct
13 Correct 166 ms 26608 KB Output is correct
14 Correct 1 ms 304 KB Output is correct
15 Correct 1 ms 300 KB Output is correct
16 Correct 4 ms 596 KB Output is correct
17 Correct 79 ms 8692 KB Output is correct
18 Correct 0 ms 212 KB Output is correct
19 Correct 1 ms 212 KB Output is correct
20 Correct 42 ms 7284 KB Output is correct
21 Correct 169 ms 26528 KB Output is correct
22 Correct 173 ms 26548 KB Output is correct
23 Correct 189 ms 26488 KB Output is correct
24 Correct 168 ms 26544 KB Output is correct
25 Correct 89 ms 12584 KB Output is correct
26 Correct 66 ms 8664 KB Output is correct
27 Correct 180 ms 26480 KB Output is correct
28 Correct 211 ms 26592 KB Output is correct
29 Correct 1 ms 212 KB Output is correct
30 Correct 1 ms 252 KB Output is correct
31 Correct 1 ms 212 KB Output is correct
32 Correct 1 ms 212 KB Output is correct
33 Correct 1 ms 212 KB Output is correct
34 Correct 1 ms 300 KB Output is correct
35 Correct 1 ms 300 KB Output is correct
36 Correct 7 ms 1364 KB Output is correct
37 Correct 178 ms 26604 KB Output is correct
38 Correct 1 ms 212 KB Output is correct
39 Correct 1 ms 212 KB Output is correct
40 Correct 8 ms 1364 KB Output is correct
41 Correct 183 ms 26468 KB Output is correct
42 Correct 1 ms 212 KB Output is correct
43 Correct 1 ms 212 KB Output is correct
44 Correct 3 ms 700 KB Output is correct
45 Correct 77 ms 8600 KB Output is correct
46 Correct 1 ms 212 KB Output is correct
47 Correct 1 ms 212 KB Output is correct
48 Correct 1 ms 212 KB Output is correct
49 Correct 44 ms 7264 KB Output is correct
50 Correct 163 ms 27888 KB Output is correct
51 Correct 182 ms 28128 KB Output is correct
52 Correct 180 ms 27888 KB Output is correct
53 Correct 68 ms 10152 KB Output is correct
54 Correct 74 ms 14076 KB Output is correct
55 Correct 167 ms 27888 KB Output is correct
56 Correct 180 ms 27964 KB Output is correct
57 Correct 75 ms 10228 KB Output is correct
58 Correct 1 ms 212 KB Output is correct
59 Correct 0 ms 212 KB Output is correct
60 Correct 1 ms 292 KB Output is correct
61 Correct 43 ms 7256 KB Output is correct
62 Correct 163 ms 26468 KB Output is correct
63 Correct 183 ms 26460 KB Output is correct
64 Correct 199 ms 26500 KB Output is correct
65 Correct 1 ms 340 KB Output is correct
66 Correct 47 ms 7284 KB Output is correct
67 Correct 162 ms 27956 KB Output is correct
68 Correct 189 ms 27908 KB Output is correct
69 Correct 172 ms 27936 KB Output is correct
70 Correct 1 ms 212 KB Output is correct
71 Correct 1 ms 304 KB Output is correct
72 Correct 1 ms 212 KB Output is correct
73 Correct 43 ms 7192 KB Output is correct
74 Correct 161 ms 27876 KB Output is correct
75 Correct 165 ms 27916 KB Output is correct
76 Correct 165 ms 27892 KB Output is correct
77 Correct 167 ms 28044 KB Output is correct
78 Correct 0 ms 212 KB Output is correct
79 Correct 1 ms 212 KB Output is correct
80 Correct 3 ms 696 KB Output is correct
81 Correct 70 ms 10104 KB Output is correct
82 Correct 1 ms 212 KB Output is correct
83 Correct 1 ms 212 KB Output is correct
84 Correct 1 ms 212 KB Output is correct
85 Correct 45 ms 7288 KB Output is correct
86 Correct 68 ms 14136 KB Output is correct
87 Correct 68 ms 14084 KB Output is correct
88 Correct 70 ms 14084 KB Output is correct
89 Correct 67 ms 10100 KB Output is correct
90 Correct 1 ms 212 KB Output is correct
91 Correct 1 ms 212 KB Output is correct
92 Correct 3 ms 596 KB Output is correct
93 Correct 68 ms 10116 KB Output is correct
94 Correct 1 ms 212 KB Output is correct
95 Correct 1 ms 212 KB Output is correct
96 Correct 1 ms 300 KB Output is correct
97 Correct 17 ms 2680 KB Output is correct
98 Correct 72 ms 10104 KB Output is correct
99 Correct 66 ms 10104 KB Output is correct
100 Correct 67 ms 10112 KB Output is correct
101 Correct 64 ms 10116 KB Output is correct
102 Correct 65 ms 10032 KB Output is correct
103 Correct 65 ms 10028 KB Output is correct
104 Correct 72 ms 10100 KB Output is correct
105 Correct 81 ms 10112 KB Output is correct