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Submission #406963

# Submission time Handle Problem Language Result Execution time Memory
406963 2021-05-18T09:19:24 Z Dilshod_Imomov Connecting Supertrees (IOI20_supertrees) C++17
100 / 100
 300 ms 22212 KB 
#include "supertrees.h"
#include <bits/stdc++.h>
using namespace std;

const int MAXN = 1e3 + 7;

vector < int > used, adj[MAXN];
vector < vector < int > > ans;

void dfs( int v ) {
	used[v] = 1;
	for ( auto u: adj[v] ) {
		ans[v][u] = 1;
		ans[u][v] = 1;
		if ( !used[u] ) {
			dfs( u );
		}
	}
}

int construct(std::vector<std::vector<int>> p) {
	int n = p.size();
	vector < int > roots, rt(n);
	used.assign(n, 0);
	ans.clear();
	for ( int i = 0; i < n; i++ ) {
		vector < int > vc(n);
		ans.push_back(vc);
		for ( int j = 0; j < n; j++ ) {
			if ( p[i][j] == 3 ) {
				return 0;
			}
		}
	}
	for ( int i = 0; i < n; i++ ) {
		if ( used[i] ) {
			continue;
		}
		used[i] = 1;
		roots.push_back(i);
		rt[i] = 1;
		cerr << i << ' ';
		for ( int j = 0; j < n; j++ ) {
			if ( i == j ) {
				if ( p[i][j] != 1 ) {
					cerr << "here1" << endl;
					return 0;
				}
				continue;
			}
			if ( p[i][j] == 1 ) {
				adj[i].push_back(j);
				adj[j].push_back(i);
				used[j] = 1;
			}
		}
		vector < int > nb(n);
		for ( auto v: adj[i] ) {
			nb[v] = 1;
			for ( auto u: adj[i] ) {
				if ( p[v][u] != 1 ) {
					cerr << "here4" << endl;
					return 0;
				}
			}
		}
		nb[i] = 1;
		for ( auto v: adj[i] ) {
			for ( int j = 0; j < n; j++ ) {
				if ( !nb[j] && p[v][j] == 1 ) {
					return 0;
				}
			}
	}
	}
	cerr << endl;
	used.assign(n, 0);
	for ( auto i: roots ) {
		if ( used[i] ) {
			continue;
		}
		vector < int > cycle = { i }, cy(n);
		used[i] = 1;
		cy[i] = 1;
		for ( auto j: roots ) {
			if ( i != j && p[i][j] == 2 ) {
				if ( used[j] ) {
					return 0;
				}
				cycle.push_back(j);
				cy[j] = 1;
			}
		}
		if ( cycle.size() == 2 ) {
			cerr << "here" << 5 << endl;
			return 0;
		}
		if ( cycle.size() == 1 ) {
			continue;
		}
		cerr << i << ' ';
		for ( int j = 1; j < (int)cycle.size(); j++ ) {
			adj[ cycle[j] ].push_back( cycle[j - 1] );
			adj[ cycle[j - 1] ].push_back( cycle[j] );
			used[cycle[j]] = 1;
			cerr << cycle[j] << " ";
		}
		cerr << endl;
		adj[ cycle.back() ].push_back(i);
		adj[i].push_back( cycle.back() );
		for ( auto v: cycle ) {
			for ( auto u: cycle ) {
				if ( v == u ) {
					continue;
				}
				if ( p[v][u] != 2 ) {
					return 0;
				}
				for ( auto x: adj[v] ) {
					for ( auto y: adj[u] ) {
						if ( cy[x] || cy[y] ) {
							continue;
						}
						if ( p[x][y] != 2 ) {
							cerr << "Here6" << endl;
							return 0;
						}
					}
					if ( !cy[x] && p[x][u] != 2 ) {
						return 0;
					}
				}
			}
			for ( int j = 0; j < n; j++ ) {
				if ( j != v && p[v][j] == 2 && rt[j] && !cy[j] ) {
					return 0;
				}
			}
		}
	}
	used.assign(n, 0);
	for ( int i = 0; i < n; i++ ) {
		if ( !used[i] ) {
			dfs( i );
		}
	}
	build(ans);
	return  1;
}
/*
4
1 1 2 2
1 1 2 2
2 2 1 2
2 2 2 1
2
1 0
0 1
*/

Subtask #1
11.0 / 11.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 204 KB Output is correct
2 Correct 1 ms 204 KB Output is correct
3 Correct 1 ms 204 KB Output is correct
4 Correct 1 ms 204 KB Output is correct
5 Correct 1 ms 204 KB Output is correct
6 Correct 12 ms 1192 KB Output is correct
7 Correct 262 ms 22028 KB Output is correct

Subtask #2
10.0 / 10.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 204 KB Output is correct
2 Correct 1 ms 204 KB Output is correct
3 Correct 1 ms 204 KB Output is correct
4 Correct 1 ms 204 KB Output is correct
5 Correct 1 ms 204 KB Output is correct
6 Correct 12 ms 1192 KB Output is correct
7 Correct 262 ms 22028 KB Output is correct
8 Correct 1 ms 204 KB Output is correct
9 Correct 1 ms 204 KB Output is correct
10 Correct 1 ms 204 KB Output is correct
11 Correct 1 ms 204 KB Output is correct
12 Correct 15 ms 1120 KB Output is correct
13 Correct 253 ms 22040 KB Output is correct
14 Correct 1 ms 204 KB Output is correct
15 Correct 1 ms 204 KB Output is correct
16 Correct 5 ms 740 KB Output is correct
17 Correct 118 ms 12192 KB Output is correct
18 Correct 1 ms 204 KB Output is correct
19 Correct 1 ms 204 KB Output is correct
20 Correct 69 ms 5772 KB Output is correct
21 Correct 239 ms 22036 KB Output is correct
22 Correct 244 ms 22032 KB Output is correct
23 Correct 258 ms 22080 KB Output is correct
24 Correct 252 ms 22176 KB Output is correct
25 Correct 102 ms 12180 KB Output is correct
26 Correct 103 ms 12052 KB Output is correct
27 Correct 263 ms 22020 KB Output is correct
28 Correct 237 ms 22052 KB Output is correct

Subtask #3
19.0 / 19.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 204 KB Output is correct
2 Correct 1 ms 204 KB Output is correct
3 Correct 1 ms 204 KB Output is correct
4 Correct 1 ms 204 KB Output is correct
5 Correct 1 ms 204 KB Output is correct
6 Correct 1 ms 204 KB Output is correct
7 Correct 1 ms 204 KB Output is correct
8 Correct 16 ms 1120 KB Output is correct
9 Correct 300 ms 22048 KB Output is correct
10 Correct 1 ms 204 KB Output is correct
11 Correct 1 ms 204 KB Output is correct
12 Correct 12 ms 1228 KB Output is correct
13 Correct 252 ms 22176 KB Output is correct
14 Correct 1 ms 204 KB Output is correct
15 Correct 1 ms 204 KB Output is correct
16 Correct 8 ms 716 KB Output is correct
17 Correct 114 ms 12180 KB Output is correct
18 Correct 1 ms 204 KB Output is correct
19 Correct 1 ms 204 KB Output is correct
20 Correct 1 ms 204 KB Output is correct
21 Correct 63 ms 5768 KB Output is correct
22 Correct 254 ms 22132 KB Output is correct
23 Correct 241 ms 22044 KB Output is correct
24 Correct 257 ms 22084 KB Output is correct
25 Correct 108 ms 12176 KB Output is correct
26 Correct 132 ms 12180 KB Output is correct
27 Correct 244 ms 22052 KB Output is correct
28 Correct 261 ms 22148 KB Output is correct
29 Correct 106 ms 12100 KB Output is correct

Subtask #4
35.0 / 35.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 204 KB Output is correct
2 Correct 1 ms 204 KB Output is correct
3 Correct 1 ms 204 KB Output is correct
4 Correct 63 ms 5776 KB Output is correct
5 Correct 233 ms 22064 KB Output is correct
6 Correct 235 ms 22212 KB Output is correct
7 Correct 246 ms 22044 KB Output is correct
8 Correct 1 ms 204 KB Output is correct
9 Correct 65 ms 5700 KB Output is correct
10 Correct 249 ms 22036 KB Output is correct
11 Correct 247 ms 22028 KB Output is correct
12 Correct 256 ms 22084 KB Output is correct
13 Correct 1 ms 204 KB Output is correct
14 Correct 1 ms 204 KB Output is correct
15 Correct 1 ms 300 KB Output is correct
16 Correct 62 ms 5700 KB Output is correct
17 Correct 256 ms 22044 KB Output is correct
18 Correct 242 ms 22032 KB Output is correct
19 Correct 239 ms 22084 KB Output is correct
20 Correct 238 ms 22028 KB Output is correct

Subtask #5
21.0 / 21.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 204 KB Output is correct
2 Correct 1 ms 204 KB Output is correct
3 Correct 1 ms 204 KB Output is correct
4 Correct 1 ms 204 KB Output is correct
5 Correct 1 ms 204 KB Output is correct
6 Correct 12 ms 1192 KB Output is correct
7 Correct 262 ms 22028 KB Output is correct
8 Correct 1 ms 204 KB Output is correct
9 Correct 1 ms 204 KB Output is correct
10 Correct 1 ms 204 KB Output is correct
11 Correct 1 ms 204 KB Output is correct
12 Correct 15 ms 1120 KB Output is correct
13 Correct 253 ms 22040 KB Output is correct
14 Correct 1 ms 204 KB Output is correct
15 Correct 1 ms 204 KB Output is correct
16 Correct 5 ms 740 KB Output is correct
17 Correct 118 ms 12192 KB Output is correct
18 Correct 1 ms 204 KB Output is correct
19 Correct 1 ms 204 KB Output is correct
20 Correct 69 ms 5772 KB Output is correct
21 Correct 239 ms 22036 KB Output is correct
22 Correct 244 ms 22032 KB Output is correct
23 Correct 258 ms 22080 KB Output is correct
24 Correct 252 ms 22176 KB Output is correct
25 Correct 102 ms 12180 KB Output is correct
26 Correct 103 ms 12052 KB Output is correct
27 Correct 263 ms 22020 KB Output is correct
28 Correct 237 ms 22052 KB Output is correct
29 Correct 1 ms 204 KB Output is correct
30 Correct 1 ms 204 KB Output is correct
31 Correct 1 ms 204 KB Output is correct
32 Correct 1 ms 204 KB Output is correct
33 Correct 1 ms 204 KB Output is correct
34 Correct 1 ms 204 KB Output is correct
35 Correct 1 ms 204 KB Output is correct
36 Correct 16 ms 1120 KB Output is correct
37 Correct 300 ms 22048 KB Output is correct
38 Correct 1 ms 204 KB Output is correct
39 Correct 1 ms 204 KB Output is correct
40 Correct 12 ms 1228 KB Output is correct
41 Correct 252 ms 22176 KB Output is correct
42 Correct 1 ms 204 KB Output is correct
43 Correct 1 ms 204 KB Output is correct
44 Correct 8 ms 716 KB Output is correct
45 Correct 114 ms 12180 KB Output is correct
46 Correct 1 ms 204 KB Output is correct
47 Correct 1 ms 204 KB Output is correct
48 Correct 1 ms 204 KB Output is correct
49 Correct 63 ms 5768 KB Output is correct
50 Correct 254 ms 22132 KB Output is correct
51 Correct 241 ms 22044 KB Output is correct
52 Correct 257 ms 22084 KB Output is correct
53 Correct 108 ms 12176 KB Output is correct
54 Correct 132 ms 12180 KB Output is correct
55 Correct 244 ms 22052 KB Output is correct
56 Correct 261 ms 22148 KB Output is correct
57 Correct 106 ms 12100 KB Output is correct
58 Correct 1 ms 204 KB Output is correct
59 Correct 1 ms 204 KB Output is correct
60 Correct 5 ms 716 KB Output is correct
61 Correct 109 ms 12192 KB Output is correct
62 Correct 1 ms 204 KB Output is correct
63 Correct 1 ms 204 KB Output is correct
64 Correct 1 ms 204 KB Output is correct
65 Correct 63 ms 5780 KB Output is correct
66 Correct 107 ms 12100 KB Output is correct
67 Correct 100 ms 12060 KB Output is correct
68 Correct 111 ms 12228 KB Output is correct
69 Correct 104 ms 12068 KB Output is correct

Subtask #6
4.0 / 4.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 204 KB Output is correct
2 Correct 1 ms 204 KB Output is correct
3 Correct 1 ms 204 KB Output is correct
4 Correct 1 ms 204 KB Output is correct
5 Correct 1 ms 204 KB Output is correct
6 Correct 12 ms 1192 KB Output is correct
7 Correct 262 ms 22028 KB Output is correct
8 Correct 1 ms 204 KB Output is correct
9 Correct 1 ms 204 KB Output is correct
10 Correct 1 ms 204 KB Output is correct
11 Correct 1 ms 204 KB Output is correct
12 Correct 15 ms 1120 KB Output is correct
13 Correct 253 ms 22040 KB Output is correct
14 Correct 1 ms 204 KB Output is correct
15 Correct 1 ms 204 KB Output is correct
16 Correct 5 ms 740 KB Output is correct
17 Correct 118 ms 12192 KB Output is correct
18 Correct 1 ms 204 KB Output is correct
19 Correct 1 ms 204 KB Output is correct
20 Correct 69 ms 5772 KB Output is correct
21 Correct 239 ms 22036 KB Output is correct
22 Correct 244 ms 22032 KB Output is correct
23 Correct 258 ms 22080 KB Output is correct
24 Correct 252 ms 22176 KB Output is correct
25 Correct 102 ms 12180 KB Output is correct
26 Correct 103 ms 12052 KB Output is correct
27 Correct 263 ms 22020 KB Output is correct
28 Correct 237 ms 22052 KB Output is correct
29 Correct 1 ms 204 KB Output is correct
30 Correct 1 ms 204 KB Output is correct
31 Correct 1 ms 204 KB Output is correct
32 Correct 1 ms 204 KB Output is correct
33 Correct 1 ms 204 KB Output is correct
34 Correct 1 ms 204 KB Output is correct
35 Correct 1 ms 204 KB Output is correct
36 Correct 16 ms 1120 KB Output is correct
37 Correct 300 ms 22048 KB Output is correct
38 Correct 1 ms 204 KB Output is correct
39 Correct 1 ms 204 KB Output is correct
40 Correct 12 ms 1228 KB Output is correct
41 Correct 252 ms 22176 KB Output is correct
42 Correct 1 ms 204 KB Output is correct
43 Correct 1 ms 204 KB Output is correct
44 Correct 8 ms 716 KB Output is correct
45 Correct 114 ms 12180 KB Output is correct
46 Correct 1 ms 204 KB Output is correct
47 Correct 1 ms 204 KB Output is correct
48 Correct 1 ms 204 KB Output is correct
49 Correct 63 ms 5768 KB Output is correct
50 Correct 254 ms 22132 KB Output is correct
51 Correct 241 ms 22044 KB Output is correct
52 Correct 257 ms 22084 KB Output is correct
53 Correct 108 ms 12176 KB Output is correct
54 Correct 132 ms 12180 KB Output is correct
55 Correct 244 ms 22052 KB Output is correct
56 Correct 261 ms 22148 KB Output is correct
57 Correct 106 ms 12100 KB Output is correct
58 Correct 1 ms 204 KB Output is correct
59 Correct 1 ms 204 KB Output is correct
60 Correct 1 ms 204 KB Output is correct
61 Correct 63 ms 5776 KB Output is correct
62 Correct 233 ms 22064 KB Output is correct
63 Correct 235 ms 22212 KB Output is correct
64 Correct 246 ms 22044 KB Output is correct
65 Correct 1 ms 204 KB Output is correct
66 Correct 65 ms 5700 KB Output is correct
67 Correct 249 ms 22036 KB Output is correct
68 Correct 247 ms 22028 KB Output is correct
69 Correct 256 ms 22084 KB Output is correct
70 Correct 1 ms 204 KB Output is correct
71 Correct 1 ms 204 KB Output is correct
72 Correct 1 ms 300 KB Output is correct
73 Correct 62 ms 5700 KB Output is correct
74 Correct 256 ms 22044 KB Output is correct
75 Correct 242 ms 22032 KB Output is correct
76 Correct 239 ms 22084 KB Output is correct
77 Correct 238 ms 22028 KB Output is correct
78 Correct 1 ms 204 KB Output is correct
79 Correct 1 ms 204 KB Output is correct
80 Correct 5 ms 716 KB Output is correct
81 Correct 109 ms 12192 KB Output is correct
82 Correct 1 ms 204 KB Output is correct
83 Correct 1 ms 204 KB Output is correct
84 Correct 1 ms 204 KB Output is correct
85 Correct 63 ms 5780 KB Output is correct
86 Correct 107 ms 12100 KB Output is correct
87 Correct 100 ms 12060 KB Output is correct
88 Correct 111 ms 12228 KB Output is correct
89 Correct 104 ms 12068 KB Output is correct
90 Correct 1 ms 204 KB Output is correct
91 Correct 1 ms 204 KB Output is correct
92 Correct 5 ms 588 KB Output is correct
93 Correct 101 ms 8212 KB Output is correct
94 Correct 1 ms 204 KB Output is correct
95 Correct 1 ms 204 KB Output is correct
96 Correct 1 ms 204 KB Output is correct
97 Correct 27 ms 2244 KB Output is correct
98 Correct 99 ms 8388 KB Output is correct
99 Correct 97 ms 8724 KB Output is correct
100 Correct 97 ms 10424 KB Output is correct
101 Correct 98 ms 11456 KB Output is correct
102 Correct 116 ms 10112 KB Output is correct
103 Correct 96 ms 10128 KB Output is correct
104 Correct 96 ms 10124 KB Output is correct
105 Correct 104 ms 10124 KB Output is correct