oj.uz

Submission #827273

# Submission time Handle Problem Language Result Execution time Memory
827273 2023-08-16T10:27:56 Z tomruk Connecting Supertrees (IOI20_supertrees) C++17
100 / 100
 190 ms 28076 KB 
#include "supertrees.h"
#include <bits/stdc++.h>
using namespace std;
int construct(vector<vector<int>> p) {
	int n = p.size();
	vector<vector<int>> answer(n,(vector<int>(n,0)));
	vector<vector<int>> myp(n,vector<int>(n,0));
	vector<bool> used(n,0);
	vector<int> col(n,0);
	set<int> cur;
	function<void(int)> dfs = [&](int v)->void{
		used[v] = 1;
		cur.insert(v);
		for(int i = 0;i<n;i++){
			if(!used[i] && p[v][i] == 1){
				col[i] = col[v];
				dfs(i);
				answer[v][i] = 1;
				answer[i][v] = 1;
			}
		}
	};
	for(int i = 0;i<n;i++){
		if(used[i])continue;
		int now = i;
		vector<int> tmp;
		int num = -1;
		set<int> s;
		for(int j = 0;j<n;j++){
			if(p[now][j] >= 2){
				if(num == -1)
					num = p[now][j];
				if(num != p[now][j])
					return 0;
				s.insert(j);
			}
		}
		while(s.size()){
			tmp.push_back(now);
			vector<int> del;
			for(auto u:s){
				if(p[now][u] != num){
					del.push_back(u);
				}
			}
			for(auto u:del)
				s.erase(u);
			if(s.empty())
				break;
			now = *s.begin();
		}
		if(tmp.empty())
			continue;
		if(tmp.size() < 3){
			return 0;
		}
		for(int j = 0;j<tmp.size();j++){
			answer[tmp[j]][tmp[(j + 1)%tmp.size()]] = 1;
			answer[tmp[(j + 1)%tmp.size()]][tmp[j]] = 1;
		}
		if(num == 3){
			if(tmp.size() < 4)
				return 0;
			answer[tmp[0]][tmp[2]] = 1;
			answer[tmp[2]][tmp[0]] = 1;
		}
		cur.clear();
		for(auto u:tmp){
			col[u] = u;
			dfs(u);
		}
		for(auto u:cur){
			for(int j = 0;j<n;j++){
				if(p[u][j] == 0 && cur.count(j))
					return 0;
				if(p[u][j] == 1 && (!cur.count(j) || col[j] != col[u]))
					return 0;
				if(p[u][j] > 1 && (p[u][j] != num || !cur.count(j)))
					return 0;
				if(p[u][j] > 1 && col[u] == col[j])
					return 0;
			}
		}
		for(auto u:cur){
			for(auto c:cur){
				myp[u][c] = num;
				if(col[u] == col[c])
					myp[u][c] = 1;
			}
		}
		if(num == 3)
			return 0;
	}
	for(int i = 0;i<n;i++){
		if(!used[i]){
			cur.clear();
			col[i] = i;
			dfs(i);
			for(auto u:cur){
				for(int j = 0;j<n;j++){
					if(p[u][j] == 0 && cur.count(j))
						return 0;
					if(p[u][j] == 1 && (!cur.count(j) || col[j] != col[u]))
						return 0;
					if(p[u][j] > 1)
						return 0;
				}
			}
			for(auto u:cur){
				for(auto c:cur){
					myp[u][c] = 1;
				}
			}
		}
	}
	if(myp != p)
		return 0;
	build(answer);
	return 1;
}

Compilation message

supertrees.cpp: In function 'int construct(std::vector<std::vector<int> >)':
supertrees.cpp:57:18: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<int>::size_type' {aka 'long unsigned int'} [-Wsign-compare]
   57 |   for(int j = 0;j<tmp.size();j++){
      |                 ~^~~~~~~~~~~

Subtask #1
11.0 / 11.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 304 KB Output is correct
2 Correct 1 ms 232 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 7 ms 1436 KB Output is correct
7 Correct 188 ms 28076 KB Output is correct

Subtask #2
10.0 / 10.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 304 KB Output is correct
2 Correct 1 ms 232 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 7 ms 1436 KB Output is correct
7 Correct 188 ms 28076 KB Output is correct
8 Correct 0 ms 296 KB Output is correct
9 Correct 0 ms 212 KB Output is correct
10 Correct 0 ms 212 KB Output is correct
11 Correct 0 ms 304 KB Output is correct
12 Correct 7 ms 1424 KB Output is correct
13 Correct 159 ms 27892 KB Output is correct
14 Correct 0 ms 212 KB Output is correct
15 Correct 1 ms 212 KB Output is correct
16 Correct 3 ms 980 KB Output is correct
17 Correct 77 ms 18044 KB Output is correct
18 Correct 1 ms 296 KB Output is correct
19 Correct 0 ms 212 KB Output is correct
20 Correct 53 ms 7168 KB Output is correct
21 Correct 173 ms 27896 KB Output is correct
22 Correct 170 ms 27852 KB Output is correct
23 Correct 184 ms 27928 KB Output is correct
24 Correct 157 ms 27844 KB Output is correct
25 Correct 74 ms 18032 KB Output is correct
26 Correct 65 ms 18032 KB Output is correct
27 Correct 189 ms 27892 KB Output is correct
28 Correct 187 ms 27904 KB Output is correct

Subtask #3
19.0 / 19.0

# Verdict Execution time Memory Grader output
1 Correct 0 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 0 ms 212 KB Output is correct
6 Correct 0 ms 212 KB Output is correct
7 Correct 1 ms 212 KB Output is correct
8 Correct 7 ms 1440 KB Output is correct
9 Correct 156 ms 27960 KB Output is correct
10 Correct 0 ms 212 KB Output is correct
11 Correct 0 ms 212 KB Output is correct
12 Correct 8 ms 1364 KB Output is correct
13 Correct 190 ms 27940 KB Output is correct
14 Correct 1 ms 212 KB Output is correct
15 Correct 0 ms 212 KB Output is correct
16 Correct 4 ms 980 KB Output is correct
17 Correct 66 ms 18040 KB Output is correct
18 Correct 1 ms 256 KB Output is correct
19 Correct 1 ms 212 KB Output is correct
20 Correct 0 ms 212 KB Output is correct
21 Correct 44 ms 7232 KB Output is correct
22 Correct 184 ms 27868 KB Output is correct
23 Correct 163 ms 27968 KB Output is correct
24 Correct 179 ms 27944 KB Output is correct
25 Correct 65 ms 18036 KB Output is correct
26 Correct 64 ms 18036 KB Output is correct
27 Correct 164 ms 27852 KB Output is correct
28 Correct 184 ms 27904 KB Output is correct
29 Correct 63 ms 17944 KB Output is correct

Subtask #4
35.0 / 35.0

# Verdict Execution time Memory Grader output
1 Correct 0 ms 212 KB Output is correct
2 Correct 1 ms 296 KB Output is correct
3 Correct 0 ms 212 KB Output is correct
4 Correct 40 ms 7220 KB Output is correct
5 Correct 162 ms 27876 KB Output is correct
6 Correct 178 ms 27888 KB Output is correct
7 Correct 182 ms 27948 KB Output is correct
8 Correct 1 ms 212 KB Output is correct
9 Correct 41 ms 7196 KB Output is correct
10 Correct 170 ms 27896 KB Output is correct
11 Correct 167 ms 27932 KB Output is correct
12 Correct 173 ms 27892 KB Output is correct
13 Correct 1 ms 212 KB Output is correct
14 Correct 1 ms 212 KB Output is correct
15 Correct 1 ms 304 KB Output is correct
16 Correct 42 ms 7204 KB Output is correct
17 Correct 183 ms 27908 KB Output is correct
18 Correct 168 ms 27800 KB Output is correct
19 Correct 166 ms 27864 KB Output is correct
20 Correct 160 ms 27856 KB Output is correct

Subtask #5
21.0 / 21.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 304 KB Output is correct
2 Correct 1 ms 232 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 7 ms 1436 KB Output is correct
7 Correct 188 ms 28076 KB Output is correct
8 Correct 0 ms 296 KB Output is correct
9 Correct 0 ms 212 KB Output is correct
10 Correct 0 ms 212 KB Output is correct
11 Correct 0 ms 304 KB Output is correct
12 Correct 7 ms 1424 KB Output is correct
13 Correct 159 ms 27892 KB Output is correct
14 Correct 0 ms 212 KB Output is correct
15 Correct 1 ms 212 KB Output is correct
16 Correct 3 ms 980 KB Output is correct
17 Correct 77 ms 18044 KB Output is correct
18 Correct 1 ms 296 KB Output is correct
19 Correct 0 ms 212 KB Output is correct
20 Correct 53 ms 7168 KB Output is correct
21 Correct 173 ms 27896 KB Output is correct
22 Correct 170 ms 27852 KB Output is correct
23 Correct 184 ms 27928 KB Output is correct
24 Correct 157 ms 27844 KB Output is correct
25 Correct 74 ms 18032 KB Output is correct
26 Correct 65 ms 18032 KB Output is correct
27 Correct 189 ms 27892 KB Output is correct
28 Correct 187 ms 27904 KB Output is correct
29 Correct 0 ms 212 KB Output is correct
30 Correct 0 ms 212 KB Output is correct
31 Correct 0 ms 212 KB Output is correct
32 Correct 0 ms 212 KB Output is correct
33 Correct 0 ms 212 KB Output is correct
34 Correct 0 ms 212 KB Output is correct
35 Correct 1 ms 212 KB Output is correct
36 Correct 7 ms 1440 KB Output is correct
37 Correct 156 ms 27960 KB Output is correct
38 Correct 0 ms 212 KB Output is correct
39 Correct 0 ms 212 KB Output is correct
40 Correct 8 ms 1364 KB Output is correct
41 Correct 190 ms 27940 KB Output is correct
42 Correct 1 ms 212 KB Output is correct
43 Correct 0 ms 212 KB Output is correct
44 Correct 4 ms 980 KB Output is correct
45 Correct 66 ms 18040 KB Output is correct
46 Correct 1 ms 256 KB Output is correct
47 Correct 1 ms 212 KB Output is correct
48 Correct 0 ms 212 KB Output is correct
49 Correct 44 ms 7232 KB Output is correct
50 Correct 184 ms 27868 KB Output is correct
51 Correct 163 ms 27968 KB Output is correct
52 Correct 179 ms 27944 KB Output is correct
53 Correct 65 ms 18036 KB Output is correct
54 Correct 64 ms 18036 KB Output is correct
55 Correct 164 ms 27852 KB Output is correct
56 Correct 184 ms 27904 KB Output is correct
57 Correct 63 ms 17944 KB Output is correct
58 Correct 1 ms 212 KB Output is correct
59 Correct 1 ms 212 KB Output is correct
60 Correct 3 ms 924 KB Output is correct
61 Correct 65 ms 18032 KB Output is correct
62 Correct 0 ms 212 KB Output is correct
63 Correct 0 ms 212 KB Output is correct
64 Correct 1 ms 212 KB Output is correct
65 Correct 40 ms 7156 KB Output is correct
66 Correct 75 ms 17952 KB Output is correct
67 Correct 70 ms 18052 KB Output is correct
68 Correct 68 ms 18036 KB Output is correct
69 Correct 61 ms 17956 KB Output is correct

Subtask #6
4.0 / 4.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 304 KB Output is correct
2 Correct 1 ms 232 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 7 ms 1436 KB Output is correct
7 Correct 188 ms 28076 KB Output is correct
8 Correct 0 ms 296 KB Output is correct
9 Correct 0 ms 212 KB Output is correct
10 Correct 0 ms 212 KB Output is correct
11 Correct 0 ms 304 KB Output is correct
12 Correct 7 ms 1424 KB Output is correct
13 Correct 159 ms 27892 KB Output is correct
14 Correct 0 ms 212 KB Output is correct
15 Correct 1 ms 212 KB Output is correct
16 Correct 3 ms 980 KB Output is correct
17 Correct 77 ms 18044 KB Output is correct
18 Correct 1 ms 296 KB Output is correct
19 Correct 0 ms 212 KB Output is correct
20 Correct 53 ms 7168 KB Output is correct
21 Correct 173 ms 27896 KB Output is correct
22 Correct 170 ms 27852 KB Output is correct
23 Correct 184 ms 27928 KB Output is correct
24 Correct 157 ms 27844 KB Output is correct
25 Correct 74 ms 18032 KB Output is correct
26 Correct 65 ms 18032 KB Output is correct
27 Correct 189 ms 27892 KB Output is correct
28 Correct 187 ms 27904 KB Output is correct
29 Correct 0 ms 212 KB Output is correct
30 Correct 0 ms 212 KB Output is correct
31 Correct 0 ms 212 KB Output is correct
32 Correct 0 ms 212 KB Output is correct
33 Correct 0 ms 212 KB Output is correct
34 Correct 0 ms 212 KB Output is correct
35 Correct 1 ms 212 KB Output is correct
36 Correct 7 ms 1440 KB Output is correct
37 Correct 156 ms 27960 KB Output is correct
38 Correct 0 ms 212 KB Output is correct
39 Correct 0 ms 212 KB Output is correct
40 Correct 8 ms 1364 KB Output is correct
41 Correct 190 ms 27940 KB Output is correct
42 Correct 1 ms 212 KB Output is correct
43 Correct 0 ms 212 KB Output is correct
44 Correct 4 ms 980 KB Output is correct
45 Correct 66 ms 18040 KB Output is correct
46 Correct 1 ms 256 KB Output is correct
47 Correct 1 ms 212 KB Output is correct
48 Correct 0 ms 212 KB Output is correct
49 Correct 44 ms 7232 KB Output is correct
50 Correct 184 ms 27868 KB Output is correct
51 Correct 163 ms 27968 KB Output is correct
52 Correct 179 ms 27944 KB Output is correct
53 Correct 65 ms 18036 KB Output is correct
54 Correct 64 ms 18036 KB Output is correct
55 Correct 164 ms 27852 KB Output is correct
56 Correct 184 ms 27904 KB Output is correct
57 Correct 63 ms 17944 KB Output is correct
58 Correct 0 ms 212 KB Output is correct
59 Correct 1 ms 296 KB Output is correct
60 Correct 0 ms 212 KB Output is correct
61 Correct 40 ms 7220 KB Output is correct
62 Correct 162 ms 27876 KB Output is correct
63 Correct 178 ms 27888 KB Output is correct
64 Correct 182 ms 27948 KB Output is correct
65 Correct 1 ms 212 KB Output is correct
66 Correct 41 ms 7196 KB Output is correct
67 Correct 170 ms 27896 KB Output is correct
68 Correct 167 ms 27932 KB Output is correct
69 Correct 173 ms 27892 KB Output is correct
70 Correct 1 ms 212 KB Output is correct
71 Correct 1 ms 212 KB Output is correct
72 Correct 1 ms 304 KB Output is correct
73 Correct 42 ms 7204 KB Output is correct
74 Correct 183 ms 27908 KB Output is correct
75 Correct 168 ms 27800 KB Output is correct
76 Correct 166 ms 27864 KB Output is correct
77 Correct 160 ms 27856 KB Output is correct
78 Correct 1 ms 212 KB Output is correct
79 Correct 1 ms 212 KB Output is correct
80 Correct 3 ms 924 KB Output is correct
81 Correct 65 ms 18032 KB Output is correct
82 Correct 0 ms 212 KB Output is correct
83 Correct 0 ms 212 KB Output is correct
84 Correct 1 ms 212 KB Output is correct
85 Correct 40 ms 7156 KB Output is correct
86 Correct 75 ms 17952 KB Output is correct
87 Correct 70 ms 18052 KB Output is correct
88 Correct 68 ms 18036 KB Output is correct
89 Correct 61 ms 17956 KB Output is correct
90 Correct 1 ms 296 KB Output is correct
91 Correct 0 ms 212 KB Output is correct
92 Correct 3 ms 980 KB Output is correct
93 Correct 68 ms 17916 KB Output is correct
94 Correct 0 ms 212 KB Output is correct
95 Correct 0 ms 212 KB Output is correct
96 Correct 1 ms 212 KB Output is correct
97 Correct 16 ms 4728 KB Output is correct
98 Correct 65 ms 17972 KB Output is correct
99 Correct 72 ms 18180 KB Output is correct
100 Correct 71 ms 18036 KB Output is correct
101 Correct 61 ms 18036 KB Output is correct
102 Correct 96 ms 18032 KB Output is correct
103 Correct 61 ms 17924 KB Output is correct
104 Correct 61 ms 18048 KB Output is correct
105 Correct 65 ms 18048 KB Output is correct