oj.uz

Submission #398786

# Submission time Handle Problem Language Result Execution time Memory
398786 2021-05-04T20:10:26 Z priority_queue Connecting Supertrees (IOI20_supertrees) C++14
100 / 100
 266 ms 28036 KB 
// ioi 2020, day 1, supertrees

#include <bits/stdc++.h>

using namespace std;

#define forint(i, N) for (int i = 0; i < (N); i++)

using namespace std;

void build(vector<vector<int> > b);

int construct(vector<vector<int> > p) {

	int N = p.size();

	vector< vector<int> > b(N, vector<int>(N, 0));

	vector<bool> visited(N, false);

	vector<vector<int> > p2(N, vector<int>(N, 0));

	forint(i, N) {

        if (!visited[i]) { // create new. All connected to i also not visited
            
            visited[i] = true;
        	
        	vector< vector<int> > circle(1);
			circle[0].push_back(i);
	
        	vector<int> path2 = {};
            
        	for (int j = i+1; j < N; j++) {
        		
        		if (p[i][j] == 1) {
        			if (visited[j]) {
        				return 0;
        			}
        			b[i][j] = 1;
        			b[j][i] = 1;
        			visited[j] = true;

        			circle[0].push_back(j);

        			continue;
        		}

        		if (p[i][j] == 2) {
        			if (visited[j]) {
        				return 0;
        			}
        			path2.push_back(j);
        			continue;
        		}

        		if (p[i][j] == 3) {
        			return 0;
        		}
        	}

        	if (!path2.empty()) {
        		if (path2.size() < 2) {
        			return 0;
        		}

        		int last = i;

        		forint(j, path2.size()) {

        			if (!visited[path2[j]]) {
                		// make it root
        				b[last][path2[j]] = 1;
        				b[path2[j]][last] = 1;
        				last = path2[j];
        				visited[path2[j]] = true;

        				circle.push_back({path2[j]});

        				for (int j2 = j+1; j2 < path2.size(); j2++) {
        					if (!visited[path2[j2]] && p[path2[j]][path2[j2]] == 1) {
        						b[path2[j]][path2[j2]] = 1;
        						b[path2[j2]][path2[j]] = 1;
        						visited[path2[j2]] = true;

        						circle[circle.size()-1].push_back(path2[j2]);
        					}	
        				}
        			}
        		}
        		b[i][last] = 1;
        		b[last][i] = 1;
        	}

        	forint(c, circle.size()) {
        		for (int d1 = 0; d1 < circle[c].size(); d1++) {
        			for (int d2 = 0; d2 < circle[c].size(); d2++) {
        				p2[circle[c][d1]][circle[c][d2]] = 1;
        			}	
        		}

        		forint(d, circle.size()) {
        			if (c!=d) {
        				for (int d1 = 0; d1 < circle[c].size(); d1++) {
        					for (int d2 = 0; d2 < circle[d].size(); d2++) {
        						p2[circle[c][d1]][circle[d][d2]] = 2;
	        				}	
    		    		}
        			}
        		}
        	}
        }
    }

    forint(i, N) {
    	forint(j, N) {
    		if (p2[i][j] != p[i][j]) {
    			return 0;
    		}
    	}
    }
    
    build(b);

    return 1;

}

Compilation message

supertrees.cpp: In function 'int construct(std::vector<std::vector<int> >)':
supertrees.cpp:7:40: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<int>::size_type' {aka 'long unsigned int'} [-Wsign-compare]
    7 | #define forint(i, N) for (int i = 0; i < (N); i++)
      |                                        ^
supertrees.cpp:69:11: note: in expansion of macro 'forint'
   69 |           forint(j, path2.size()) {
      |           ^~~~~~
supertrees.cpp:80:35: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<int>::size_type' {aka 'long unsigned int'} [-Wsign-compare]
   80 |             for (int j2 = j+1; j2 < path2.size(); j2++) {
      |                                ~~~^~~~~~~~~~~~~~
supertrees.cpp:7:40: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<std::vector<int> >::size_type' {aka 'long unsigned int'} [-Wsign-compare]
    7 | #define forint(i, N) for (int i = 0; i < (N); i++)
      |                                        ^
supertrees.cpp:95:10: note: in expansion of macro 'forint'
   95 |          forint(c, circle.size()) {
      |          ^~~~~~
supertrees.cpp:96:31: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<int>::size_type' {aka 'long unsigned int'} [-Wsign-compare]
   96 |           for (int d1 = 0; d1 < circle[c].size(); d1++) {
      |                            ~~~^~~~~~~~~~~~~~~~~~
supertrees.cpp:97:32: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<int>::size_type' {aka 'long unsigned int'} [-Wsign-compare]
   97 |            for (int d2 = 0; d2 < circle[c].size(); d2++) {
      |                             ~~~^~~~~~~~~~~~~~~~~~
supertrees.cpp:7:40: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<std::vector<int> >::size_type' {aka 'long unsigned int'} [-Wsign-compare]
    7 | #define forint(i, N) for (int i = 0; i < (N); i++)
      |                                        ^
supertrees.cpp:102:11: note: in expansion of macro 'forint'
  102 |           forint(d, circle.size()) {
      |           ^~~~~~
supertrees.cpp:104:33: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<int>::size_type' {aka 'long unsigned int'} [-Wsign-compare]
  104 |             for (int d1 = 0; d1 < circle[c].size(); d1++) {
      |                              ~~~^~~~~~~~~~~~~~~~~~
supertrees.cpp:105:34: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<int>::size_type' {aka 'long unsigned int'} [-Wsign-compare]
  105 |              for (int d2 = 0; d2 < circle[d].size(); d2++) {
      |                               ~~~^~~~~~~~~~~~~~~~~~

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 11 ms 1332 KB Output is correct
7 Correct 265 ms 27912 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 11 ms 1332 KB Output is correct
7 Correct 265 ms 27912 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 292 KB Output is correct
11 Correct 1 ms 300 KB Output is correct
12 Correct 11 ms 1356 KB Output is correct
13 Correct 243 ms 27904 KB Output is correct
14 Correct 1 ms 204 KB Output is correct
15 Correct 1 ms 204 KB Output is correct
16 Correct 6 ms 920 KB Output is correct
17 Correct 106 ms 18028 KB Output is correct
18 Correct 1 ms 204 KB Output is correct
19 Correct 1 ms 208 KB Output is correct
20 Correct 62 ms 7144 KB Output is correct
21 Correct 245 ms 27908 KB Output is correct
22 Correct 248 ms 27844 KB Output is correct
23 Correct 251 ms 27900 KB Output is correct
24 Correct 260 ms 27844 KB Output is correct
25 Correct 107 ms 17988 KB Output is correct
26 Correct 103 ms 18028 KB Output is correct
27 Correct 262 ms 27928 KB Output is correct
28 Correct 247 ms 27972 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 296 KB Output is correct
6 Correct 1 ms 204 KB Output is correct
7 Correct 1 ms 204 KB Output is correct
8 Correct 11 ms 1364 KB Output is correct
9 Correct 250 ms 27844 KB Output is correct
10 Correct 1 ms 204 KB Output is correct
11 Correct 1 ms 204 KB Output is correct
12 Correct 11 ms 1328 KB Output is correct
13 Correct 243 ms 27912 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 972 KB Output is correct
17 Correct 108 ms 18044 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 7212 KB Output is correct
22 Correct 247 ms 27844 KB Output is correct
23 Correct 253 ms 27844 KB Output is correct
24 Correct 250 ms 27972 KB Output is correct
25 Correct 102 ms 17988 KB Output is correct
26 Correct 102 ms 18044 KB Output is correct
27 Correct 242 ms 27888 KB Output is correct
28 Correct 252 ms 27900 KB Output is correct
29 Correct 102 ms 17912 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 292 KB Output is correct
4 Correct 63 ms 7148 KB Output is correct
5 Correct 248 ms 28036 KB Output is correct
6 Correct 243 ms 27844 KB Output is correct
7 Correct 250 ms 27844 KB Output is correct
8 Correct 1 ms 204 KB Output is correct
9 Correct 62 ms 7212 KB Output is correct
10 Correct 243 ms 27888 KB Output is correct
11 Correct 248 ms 28020 KB Output is correct
12 Correct 266 ms 27844 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 204 KB Output is correct
16 Correct 63 ms 7236 KB Output is correct
17 Correct 245 ms 27900 KB Output is correct
18 Correct 243 ms 27892 KB Output is correct
19 Correct 256 ms 28016 KB Output is correct
20 Correct 244 ms 27908 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 11 ms 1332 KB Output is correct
7 Correct 265 ms 27912 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 292 KB Output is correct
11 Correct 1 ms 300 KB Output is correct
12 Correct 11 ms 1356 KB Output is correct
13 Correct 243 ms 27904 KB Output is correct
14 Correct 1 ms 204 KB Output is correct
15 Correct 1 ms 204 KB Output is correct
16 Correct 6 ms 920 KB Output is correct
17 Correct 106 ms 18028 KB Output is correct
18 Correct 1 ms 204 KB Output is correct
19 Correct 1 ms 208 KB Output is correct
20 Correct 62 ms 7144 KB Output is correct
21 Correct 245 ms 27908 KB Output is correct
22 Correct 248 ms 27844 KB Output is correct
23 Correct 251 ms 27900 KB Output is correct
24 Correct 260 ms 27844 KB Output is correct
25 Correct 107 ms 17988 KB Output is correct
26 Correct 103 ms 18028 KB Output is correct
27 Correct 262 ms 27928 KB Output is correct
28 Correct 247 ms 27972 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 296 KB Output is correct
34 Correct 1 ms 204 KB Output is correct
35 Correct 1 ms 204 KB Output is correct
36 Correct 11 ms 1364 KB Output is correct
37 Correct 250 ms 27844 KB Output is correct
38 Correct 1 ms 204 KB Output is correct
39 Correct 1 ms 204 KB Output is correct
40 Correct 11 ms 1328 KB Output is correct
41 Correct 243 ms 27912 KB Output is correct
42 Correct 1 ms 204 KB Output is correct
43 Correct 1 ms 204 KB Output is correct
44 Correct 5 ms 972 KB Output is correct
45 Correct 108 ms 18044 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 7212 KB Output is correct
50 Correct 247 ms 27844 KB Output is correct
51 Correct 253 ms 27844 KB Output is correct
52 Correct 250 ms 27972 KB Output is correct
53 Correct 102 ms 17988 KB Output is correct
54 Correct 102 ms 18044 KB Output is correct
55 Correct 242 ms 27888 KB Output is correct
56 Correct 252 ms 27900 KB Output is correct
57 Correct 102 ms 17912 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 972 KB Output is correct
61 Correct 109 ms 18044 KB Output is correct
62 Correct 1 ms 204 KB Output is correct
63 Correct 1 ms 208 KB Output is correct
64 Correct 1 ms 204 KB Output is correct
65 Correct 63 ms 7216 KB Output is correct
66 Correct 107 ms 18044 KB Output is correct
67 Correct 108 ms 17956 KB Output is correct
68 Correct 102 ms 18032 KB Output is correct
69 Correct 100 ms 18036 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 11 ms 1332 KB Output is correct
7 Correct 265 ms 27912 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 292 KB Output is correct
11 Correct 1 ms 300 KB Output is correct
12 Correct 11 ms 1356 KB Output is correct
13 Correct 243 ms 27904 KB Output is correct
14 Correct 1 ms 204 KB Output is correct
15 Correct 1 ms 204 KB Output is correct
16 Correct 6 ms 920 KB Output is correct
17 Correct 106 ms 18028 KB Output is correct
18 Correct 1 ms 204 KB Output is correct
19 Correct 1 ms 208 KB Output is correct
20 Correct 62 ms 7144 KB Output is correct
21 Correct 245 ms 27908 KB Output is correct
22 Correct 248 ms 27844 KB Output is correct
23 Correct 251 ms 27900 KB Output is correct
24 Correct 260 ms 27844 KB Output is correct
25 Correct 107 ms 17988 KB Output is correct
26 Correct 103 ms 18028 KB Output is correct
27 Correct 262 ms 27928 KB Output is correct
28 Correct 247 ms 27972 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 296 KB Output is correct
34 Correct 1 ms 204 KB Output is correct
35 Correct 1 ms 204 KB Output is correct
36 Correct 11 ms 1364 KB Output is correct
37 Correct 250 ms 27844 KB Output is correct
38 Correct 1 ms 204 KB Output is correct
39 Correct 1 ms 204 KB Output is correct
40 Correct 11 ms 1328 KB Output is correct
41 Correct 243 ms 27912 KB Output is correct
42 Correct 1 ms 204 KB Output is correct
43 Correct 1 ms 204 KB Output is correct
44 Correct 5 ms 972 KB Output is correct
45 Correct 108 ms 18044 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 7212 KB Output is correct
50 Correct 247 ms 27844 KB Output is correct
51 Correct 253 ms 27844 KB Output is correct
52 Correct 250 ms 27972 KB Output is correct
53 Correct 102 ms 17988 KB Output is correct
54 Correct 102 ms 18044 KB Output is correct
55 Correct 242 ms 27888 KB Output is correct
56 Correct 252 ms 27900 KB Output is correct
57 Correct 102 ms 17912 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 292 KB Output is correct
61 Correct 63 ms 7148 KB Output is correct
62 Correct 248 ms 28036 KB Output is correct
63 Correct 243 ms 27844 KB Output is correct
64 Correct 250 ms 27844 KB Output is correct
65 Correct 1 ms 204 KB Output is correct
66 Correct 62 ms 7212 KB Output is correct
67 Correct 243 ms 27888 KB Output is correct
68 Correct 248 ms 28020 KB Output is correct
69 Correct 266 ms 27844 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 204 KB Output is correct
73 Correct 63 ms 7236 KB Output is correct
74 Correct 245 ms 27900 KB Output is correct
75 Correct 243 ms 27892 KB Output is correct
76 Correct 256 ms 28016 KB Output is correct
77 Correct 244 ms 27908 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 972 KB Output is correct
81 Correct 109 ms 18044 KB Output is correct
82 Correct 1 ms 204 KB Output is correct
83 Correct 1 ms 208 KB Output is correct
84 Correct 1 ms 204 KB Output is correct
85 Correct 63 ms 7216 KB Output is correct
86 Correct 107 ms 18044 KB Output is correct
87 Correct 108 ms 17956 KB Output is correct
88 Correct 102 ms 18032 KB Output is correct
89 Correct 100 ms 18036 KB Output is correct
90 Correct 1 ms 204 KB Output is correct
91 Correct 1 ms 292 KB Output is correct
92 Correct 5 ms 976 KB Output is correct
93 Correct 99 ms 18044 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 26 ms 4724 KB Output is correct
98 Correct 102 ms 18040 KB Output is correct
99 Correct 103 ms 18028 KB Output is correct
100 Correct 104 ms 17988 KB Output is correct
101 Correct 102 ms 18028 KB Output is correct
102 Correct 94 ms 17916 KB Output is correct
103 Correct 97 ms 17992 KB Output is correct
104 Correct 90 ms 17988 KB Output is correct
105 Correct 107 ms 18028 KB Output is correct