oj.uz

Submission #405073

# Submission time Handle Problem Language Result Execution time Memory
405073 2021-05-15T16:40:25 Z ly20 Connecting Supertrees (IOI20_supertrees) C++17
100 / 100
 279 ms 32120 KB 
#include "supertrees.h"
#include <bits/stdc++.h>
using namespace std;
const int MAXN = 1123;
int comp[MAXN];
vector <int> grafo[MAXN];
int marc[MAXN];
int cmp;
//vector <int> grafo2[MAXN];
void dfs(int v) {
    marc[v] = 1;
    comp[v] = cmp;
    for(int i = 0; i < grafo[v].size(); i++) {
        int viz = grafo[v][i];
        if(marc[viz] == 1) continue;
        dfs(viz);
    }
}
int resp[MAXN][MAXN];
int cic[MAXN][MAXN];
int rep[MAXN];
int cm2[MAXN], cmp2;
int marc2[MAXN];
vector <int> ln[MAXN];
vector <vector <int> > answer;
//vector <int> temp;
void dfs2(int v) {
    marc2[v] = 1;
    cm2[v] = cmp2;
    for(int i = 0; i < cmp; i++) {
        if(marc2[i] == 1) continue;
        if(cic[v][i] == 1) dfs2(i);
    }
}
int construct(vector<vector<int>> p) {
	int n = p.size();
	vector<vector<int>> answer;
    for(int i = 0; i < n; i++) {
        comp[i] = i;
    }
    for(int i = 0; i < n; i++) {
        for(int j = 0; j < n; j++) {
            if(p[i][j] == 1) {
                grafo[i].push_back(j);
            }
        }
    }
    for(int i = 0; i < n; i++) {
        if(marc[i] == 0) {
            dfs(i);
            cmp++;
        }
    }
    for(int i = 0; i < cmp; i++) {
        for(int j = 0; j < n; j++) if(comp[j] == i) ln[i].push_back(j);
        int m = ln[i].size();
        for(int j = 0; j < m; j++) {
            int cur = ln[i][j];
            for(int k = j + 1; k < m; k++) {
                int tst = ln[i][k];
                if(p[cur][tst] != 1) {
                    return 0;
                }
            }
        }
        for(int j = 0; j < m - 1; j++) {
            int pr = j + 1;
            resp[ln[i][j]][ln[i][pr]] = 1;
            resp[ln[i][pr]][ln[i][j]] = 1;
        }
        rep[i] = ln[i][0];
    }
    for(int i = 0; i < cmp; i++) {
        for(int j = i + 1; j < cmp; j++) {
            int bs = p[rep[i]][rep[j]];
            for(int k = 0; k < ln[i].size(); k++) {
                for(int l = 0; l < ln[j].size(); l++) {
                    if(p[ln[i][k]][ln[j][l]] != bs) bs = -1;
                }
            }
            if(bs == 2) {
                cic[i][j] = 1;
                cic[j][i] = 1;
            }
            else if(bs == -1 || bs == 1) return 0;
        }
    }
    for(int i = 0; i < cmp; i++) {
        if(marc2[i] == 0) {
            dfs2(i);
            cmp2++;
        }
    }
    for(int i = 0; i < cmp2; i++) {
        vector <int> temp;
        for(int j = 0; j < cmp; j++) if(cm2[j] == i) temp.push_back(j);
        int m = temp.size();
        for(int j = 0; j < m; j++) {
            for(int k = j + 1; k < m; k++) {
                if(cic[temp[j]][temp[k]] == 0) return 0;
            }
        }
        if(temp.size() == 1) continue;
        for(int j = 0; j < m; j++) {
            int pr = (j + 1) % m;
            resp[rep[temp[pr]]][rep[temp[j]]] = 1;
            resp[rep[temp[j]]][rep[temp[pr]]] = 1;
        }
        if(temp.size() == 2) return 0;
    }
    for(int i = 0; i < n; i++) {
        for(int j = 0; j < n; j++) {
            if(i == j) continue;
            if(cm2[comp[i]] != cm2[comp[j]]) {
                if(p[i][j] != 0) return 0;
            }
            else {
                if(comp[i] == comp[j]) {
                    if(p[i][j] != 1) return 0;
                }
                else {
                    if(p[i][j] != 2) return 0;
                }
            }
        }
    }
	for (int i = 0; i < n; i++) {
		vector<int> row;
		for(int j = 0; j < n; j++) {
            row.push_back(resp[i][j]);
		}
		answer.push_back(row);
	}
	build(answer);
	return 1;
}

Compilation message

supertrees.cpp: In function 'void dfs(int)':
supertrees.cpp:13:22: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<int>::size_type' {aka 'long unsigned int'} [-Wsign-compare]
   13 |     for(int i = 0; i < grafo[v].size(); i++) {
      |                    ~~^~~~~~~~~~~~~~~~~
supertrees.cpp: In function 'int construct(std::vector<std::vector<int> >)':
supertrees.cpp:76:30: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<int>::size_type' {aka 'long unsigned int'} [-Wsign-compare]
   76 |             for(int k = 0; k < ln[i].size(); k++) {
      |                            ~~^~~~~~~~~~~~~~
supertrees.cpp:77:34: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<int>::size_type' {aka 'long unsigned int'} [-Wsign-compare]
   77 |                 for(int l = 0; l < ln[j].size(); l++) {
      |                                ~~^~~~~~~~~~~~~~

Subtask #1
11.0 / 11.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 332 KB Output is correct
2 Correct 1 ms 332 KB Output is correct
3 Correct 1 ms 332 KB Output is correct
4 Correct 1 ms 332 KB Output is correct
5 Correct 1 ms 332 KB Output is correct
6 Correct 11 ms 2252 KB Output is correct
7 Correct 242 ms 30276 KB Output is correct

Subtask #2
10.0 / 10.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 332 KB Output is correct
2 Correct 1 ms 332 KB Output is correct
3 Correct 1 ms 332 KB Output is correct
4 Correct 1 ms 332 KB Output is correct
5 Correct 1 ms 332 KB Output is correct
6 Correct 11 ms 2252 KB Output is correct
7 Correct 242 ms 30276 KB Output is correct
8 Correct 1 ms 332 KB Output is correct
9 Correct 1 ms 332 KB Output is correct
10 Correct 1 ms 332 KB Output is correct
11 Correct 1 ms 332 KB Output is correct
12 Correct 11 ms 1288 KB Output is correct
13 Correct 244 ms 22168 KB Output is correct
14 Correct 1 ms 332 KB Output is correct
15 Correct 1 ms 332 KB Output is correct
16 Correct 5 ms 716 KB Output is correct
17 Correct 111 ms 10692 KB Output is correct
18 Correct 1 ms 332 KB Output is correct
19 Correct 1 ms 332 KB Output is correct
20 Correct 60 ms 7756 KB Output is correct
21 Correct 245 ms 26744 KB Output is correct
22 Correct 239 ms 25916 KB Output is correct
23 Correct 244 ms 28160 KB Output is correct
24 Correct 244 ms 22468 KB Output is correct
25 Correct 97 ms 10824 KB Output is correct
26 Correct 95 ms 8504 KB Output is correct
27 Correct 248 ms 29256 KB Output is correct
28 Correct 239 ms 22372 KB Output is correct

Subtask #3
19.0 / 19.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 332 KB Output is correct
2 Correct 1 ms 332 KB Output is correct
3 Correct 1 ms 332 KB Output is correct
4 Correct 1 ms 332 KB Output is correct
5 Correct 1 ms 352 KB Output is correct
6 Correct 1 ms 332 KB Output is correct
7 Correct 1 ms 356 KB Output is correct
8 Correct 11 ms 1368 KB Output is correct
9 Correct 251 ms 23336 KB Output is correct
10 Correct 1 ms 332 KB Output is correct
11 Correct 1 ms 332 KB Output is correct
12 Correct 11 ms 3020 KB Output is correct
13 Correct 242 ms 31784 KB Output is correct
14 Correct 1 ms 352 KB Output is correct
15 Correct 1 ms 356 KB Output is correct
16 Correct 6 ms 1640 KB Output is correct
17 Correct 114 ms 14056 KB Output is correct
18 Correct 1 ms 332 KB Output is correct
19 Correct 1 ms 332 KB Output is correct
20 Correct 1 ms 332 KB Output is correct
21 Correct 63 ms 10164 KB Output is correct
22 Correct 253 ms 31924 KB Output is correct
23 Correct 242 ms 32068 KB Output is correct
24 Correct 255 ms 31840 KB Output is correct
25 Correct 107 ms 10180 KB Output is correct
26 Correct 107 ms 14720 KB Output is correct
27 Correct 245 ms 32120 KB Output is correct
28 Correct 263 ms 32008 KB Output is correct
29 Correct 105 ms 10180 KB Output is correct

Subtask #4
35.0 / 35.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 332 KB Output is correct
2 Correct 1 ms 332 KB Output is correct
3 Correct 1 ms 332 KB Output is correct
4 Correct 62 ms 7828 KB Output is correct
5 Correct 240 ms 26676 KB Output is correct
6 Correct 234 ms 25864 KB Output is correct
7 Correct 262 ms 28096 KB Output is correct
8 Correct 1 ms 332 KB Output is correct
9 Correct 65 ms 9784 KB Output is correct
10 Correct 245 ms 30656 KB Output is correct
11 Correct 279 ms 30784 KB Output is correct
12 Correct 261 ms 30528 KB Output is correct
13 Correct 1 ms 332 KB Output is correct
14 Correct 1 ms 332 KB Output is correct
15 Correct 1 ms 332 KB Output is correct
16 Correct 61 ms 9528 KB Output is correct
17 Correct 242 ms 30652 KB Output is correct
18 Correct 242 ms 28620 KB Output is correct
19 Correct 238 ms 28996 KB Output is correct
20 Correct 240 ms 22604 KB Output is correct

Subtask #5
21.0 / 21.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 332 KB Output is correct
2 Correct 1 ms 332 KB Output is correct
3 Correct 1 ms 332 KB Output is correct
4 Correct 1 ms 332 KB Output is correct
5 Correct 1 ms 332 KB Output is correct
6 Correct 11 ms 2252 KB Output is correct
7 Correct 242 ms 30276 KB Output is correct
8 Correct 1 ms 332 KB Output is correct
9 Correct 1 ms 332 KB Output is correct
10 Correct 1 ms 332 KB Output is correct
11 Correct 1 ms 332 KB Output is correct
12 Correct 11 ms 1288 KB Output is correct
13 Correct 244 ms 22168 KB Output is correct
14 Correct 1 ms 332 KB Output is correct
15 Correct 1 ms 332 KB Output is correct
16 Correct 5 ms 716 KB Output is correct
17 Correct 111 ms 10692 KB Output is correct
18 Correct 1 ms 332 KB Output is correct
19 Correct 1 ms 332 KB Output is correct
20 Correct 60 ms 7756 KB Output is correct
21 Correct 245 ms 26744 KB Output is correct
22 Correct 239 ms 25916 KB Output is correct
23 Correct 244 ms 28160 KB Output is correct
24 Correct 244 ms 22468 KB Output is correct
25 Correct 97 ms 10824 KB Output is correct
26 Correct 95 ms 8504 KB Output is correct
27 Correct 248 ms 29256 KB Output is correct
28 Correct 239 ms 22372 KB Output is correct
29 Correct 1 ms 332 KB Output is correct
30 Correct 1 ms 332 KB Output is correct
31 Correct 1 ms 332 KB Output is correct
32 Correct 1 ms 332 KB Output is correct
33 Correct 1 ms 352 KB Output is correct
34 Correct 1 ms 332 KB Output is correct
35 Correct 1 ms 356 KB Output is correct
36 Correct 11 ms 1368 KB Output is correct
37 Correct 251 ms 23336 KB Output is correct
38 Correct 1 ms 332 KB Output is correct
39 Correct 1 ms 332 KB Output is correct
40 Correct 11 ms 3020 KB Output is correct
41 Correct 242 ms 31784 KB Output is correct
42 Correct 1 ms 352 KB Output is correct
43 Correct 1 ms 356 KB Output is correct
44 Correct 6 ms 1640 KB Output is correct
45 Correct 114 ms 14056 KB Output is correct
46 Correct 1 ms 332 KB Output is correct
47 Correct 1 ms 332 KB Output is correct
48 Correct 1 ms 332 KB Output is correct
49 Correct 63 ms 10164 KB Output is correct
50 Correct 253 ms 31924 KB Output is correct
51 Correct 242 ms 32068 KB Output is correct
52 Correct 255 ms 31840 KB Output is correct
53 Correct 107 ms 10180 KB Output is correct
54 Correct 107 ms 14720 KB Output is correct
55 Correct 245 ms 32120 KB Output is correct
56 Correct 263 ms 32008 KB Output is correct
57 Correct 105 ms 10180 KB Output is correct
58 Correct 1 ms 332 KB Output is correct
59 Correct 1 ms 360 KB Output is correct
60 Correct 6 ms 852 KB Output is correct
61 Correct 110 ms 12208 KB Output is correct
62 Correct 1 ms 360 KB Output is correct
63 Correct 1 ms 352 KB Output is correct
64 Correct 1 ms 352 KB Output is correct
65 Correct 63 ms 9852 KB Output is correct
66 Correct 99 ms 9984 KB Output is correct
67 Correct 98 ms 10164 KB Output is correct
68 Correct 98 ms 12136 KB Output is correct
69 Correct 101 ms 9928 KB Output is correct

Subtask #6
4.0 / 4.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 332 KB Output is correct
2 Correct 1 ms 332 KB Output is correct
3 Correct 1 ms 332 KB Output is correct
4 Correct 1 ms 332 KB Output is correct
5 Correct 1 ms 332 KB Output is correct
6 Correct 11 ms 2252 KB Output is correct
7 Correct 242 ms 30276 KB Output is correct
8 Correct 1 ms 332 KB Output is correct
9 Correct 1 ms 332 KB Output is correct
10 Correct 1 ms 332 KB Output is correct
11 Correct 1 ms 332 KB Output is correct
12 Correct 11 ms 1288 KB Output is correct
13 Correct 244 ms 22168 KB Output is correct
14 Correct 1 ms 332 KB Output is correct
15 Correct 1 ms 332 KB Output is correct
16 Correct 5 ms 716 KB Output is correct
17 Correct 111 ms 10692 KB Output is correct
18 Correct 1 ms 332 KB Output is correct
19 Correct 1 ms 332 KB Output is correct
20 Correct 60 ms 7756 KB Output is correct
21 Correct 245 ms 26744 KB Output is correct
22 Correct 239 ms 25916 KB Output is correct
23 Correct 244 ms 28160 KB Output is correct
24 Correct 244 ms 22468 KB Output is correct
25 Correct 97 ms 10824 KB Output is correct
26 Correct 95 ms 8504 KB Output is correct
27 Correct 248 ms 29256 KB Output is correct
28 Correct 239 ms 22372 KB Output is correct
29 Correct 1 ms 332 KB Output is correct
30 Correct 1 ms 332 KB Output is correct
31 Correct 1 ms 332 KB Output is correct
32 Correct 1 ms 332 KB Output is correct
33 Correct 1 ms 352 KB Output is correct
34 Correct 1 ms 332 KB Output is correct
35 Correct 1 ms 356 KB Output is correct
36 Correct 11 ms 1368 KB Output is correct
37 Correct 251 ms 23336 KB Output is correct
38 Correct 1 ms 332 KB Output is correct
39 Correct 1 ms 332 KB Output is correct
40 Correct 11 ms 3020 KB Output is correct
41 Correct 242 ms 31784 KB Output is correct
42 Correct 1 ms 352 KB Output is correct
43 Correct 1 ms 356 KB Output is correct
44 Correct 6 ms 1640 KB Output is correct
45 Correct 114 ms 14056 KB Output is correct
46 Correct 1 ms 332 KB Output is correct
47 Correct 1 ms 332 KB Output is correct
48 Correct 1 ms 332 KB Output is correct
49 Correct 63 ms 10164 KB Output is correct
50 Correct 253 ms 31924 KB Output is correct
51 Correct 242 ms 32068 KB Output is correct
52 Correct 255 ms 31840 KB Output is correct
53 Correct 107 ms 10180 KB Output is correct
54 Correct 107 ms 14720 KB Output is correct
55 Correct 245 ms 32120 KB Output is correct
56 Correct 263 ms 32008 KB Output is correct
57 Correct 105 ms 10180 KB Output is correct
58 Correct 1 ms 332 KB Output is correct
59 Correct 1 ms 332 KB Output is correct
60 Correct 1 ms 332 KB Output is correct
61 Correct 62 ms 7828 KB Output is correct
62 Correct 240 ms 26676 KB Output is correct
63 Correct 234 ms 25864 KB Output is correct
64 Correct 262 ms 28096 KB Output is correct
65 Correct 1 ms 332 KB Output is correct
66 Correct 65 ms 9784 KB Output is correct
67 Correct 245 ms 30656 KB Output is correct
68 Correct 279 ms 30784 KB Output is correct
69 Correct 261 ms 30528 KB Output is correct
70 Correct 1 ms 332 KB Output is correct
71 Correct 1 ms 332 KB Output is correct
72 Correct 1 ms 332 KB Output is correct
73 Correct 61 ms 9528 KB Output is correct
74 Correct 242 ms 30652 KB Output is correct
75 Correct 242 ms 28620 KB Output is correct
76 Correct 238 ms 28996 KB Output is correct
77 Correct 240 ms 22604 KB Output is correct
78 Correct 1 ms 332 KB Output is correct
79 Correct 1 ms 360 KB Output is correct
80 Correct 6 ms 852 KB Output is correct
81 Correct 110 ms 12208 KB Output is correct
82 Correct 1 ms 360 KB Output is correct
83 Correct 1 ms 352 KB Output is correct
84 Correct 1 ms 352 KB Output is correct
85 Correct 63 ms 9852 KB Output is correct
86 Correct 99 ms 9984 KB Output is correct
87 Correct 98 ms 10164 KB Output is correct
88 Correct 98 ms 12136 KB Output is correct
89 Correct 101 ms 9928 KB Output is correct
90 Correct 1 ms 356 KB Output is correct
91 Correct 1 ms 332 KB Output is correct
92 Correct 5 ms 716 KB Output is correct
93 Correct 108 ms 10920 KB Output is correct
94 Correct 1 ms 332 KB Output is correct
95 Correct 1 ms 332 KB Output is correct
96 Correct 1 ms 332 KB Output is correct
97 Correct 27 ms 6372 KB Output is correct
98 Correct 108 ms 17672 KB Output is correct
99 Correct 100 ms 14144 KB Output is correct
100 Correct 99 ms 12504 KB Output is correct
101 Correct 104 ms 9608 KB Output is correct
102 Correct 110 ms 9264 KB Output is correct
103 Correct 107 ms 13596 KB Output is correct
104 Correct 107 ms 11620 KB Output is correct
105 Correct 117 ms 9264 KB Output is correct