oj.uz

Submission #427240

# Submission time Handle Problem Language Result Execution time Memory
427240 2021-06-14T13:40:38 Z gonengazit Connecting Supertrees (IOI20_supertrees) C++14
100 / 100
 273 ms 24052 KB 
#include "supertrees.h"
#include <vector>
#include <bits/stdc++.h>
using namespace std;

vector<vector<int>> ret;
vector<vector<int>> p;

inline void edge(int i, int j){
	ret[i][j]=ret[j][i]=1;
}
bool create(vector<int> conn){
	vector<int> cyc;
	vector<int> fr(ret.size(),-1);
	for(auto i:conn){
		int from=-1;
		for(auto j:cyc){
			if(p[i][j]==0){
				return false;
			}
			else if(p[i][j]==1){
				if(from!=-1){
					return false;
				}
				else{
					from=j;
				}
			}
		}
		if(from==-1){
			cyc.push_back(i);
			fr[i]=i;
		}
		else{
			edge(from,i);
			fr[i]=from;
		}
	}
	for(auto i:conn){
		for(auto j:conn){
			if(i==j){
				continue;
			}
			if(fr[i]==fr[j]&&p[i][j]!=1||
			(fr[i]!=fr[j]&&p[i][j]!=2)){
				return false;
			}
		}
	}
	for(int i=0; i+1<cyc.size(); i++){
		edge(cyc[i],cyc[i+1]);
	}
	if(cyc.size()==2){
		return false;
	}
	if(cyc.size()>2){
		edge(cyc[0],cyc.back());
	}
	return true;
}
int construct(std::vector<std::vector<int>> P) {
	p=move(P);
	int n=p.size();
	vector<bool> used(n,false);
	ret.assign(n,vector<int>(n,0));
	for(int i=0; i<n; i++){
		if(used[i]){
			continue;
		}
		used[i]=true;
		vector<int> conn;
		conn.push_back(i);
		for(int j=i+1; j<n; j++){
			if(p[i][j]>0){
				conn.push_back(j);
				used[j]=true;
			}
		}
		for(auto j:conn){
			for(int k=0; k<n; k++){
				if(p[i][k]==0&&p[j][k]!=0){
					return 0;
				}
			}
		}
		if(!create(conn)){
			return 0;
		}
	}
	build(ret);
	return 1;

	// vector<vector<int>> v(P.size(),vector<int>(P.size(),0));
	// for(int i=1; i<P.size(); i++){
	// 	v[0][i]=v[i][0]=1;
	// }
	// build(v);
	// return 1;
}

Compilation message

supertrees.cpp: In function 'bool create(std::vector<int>)':
supertrees.cpp:44:19: warning: suggest parentheses around '&&' within '||' [-Wparentheses]
   44 |    if(fr[i]==fr[j]&&p[i][j]!=1||
supertrees.cpp:50:18: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<int>::size_type' {aka 'long unsigned int'} [-Wsign-compare]
   50 |  for(int i=0; i+1<cyc.size(); i++){
      |               ~~~^~~~~~~~~~~

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 13 ms 1100 KB Output is correct
7 Correct 263 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 13 ms 1100 KB Output is correct
7 Correct 263 ms 22028 KB Output is correct
8 Correct 1 ms 204 KB Output is correct
9 Correct 0 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 10 ms 1100 KB Output is correct
13 Correct 224 ms 21960 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 704 KB Output is correct
17 Correct 106 ms 12032 KB Output is correct
18 Correct 1 ms 204 KB Output is correct
19 Correct 1 ms 204 KB Output is correct
20 Correct 75 ms 6244 KB Output is correct
21 Correct 235 ms 23932 KB Output is correct
22 Correct 244 ms 24052 KB Output is correct
23 Correct 234 ms 24004 KB Output is correct
24 Correct 231 ms 23916 KB Output is correct
25 Correct 97 ms 14072 KB Output is correct
26 Correct 106 ms 13996 KB Output is correct
27 Correct 245 ms 23892 KB Output is correct
28 Correct 268 ms 23952 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 0 ms 204 KB Output is correct
3 Correct 0 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 280 KB Output is correct
8 Correct 10 ms 1228 KB Output is correct
9 Correct 230 ms 21952 KB Output is correct
10 Correct 1 ms 204 KB Output is correct
11 Correct 1 ms 204 KB Output is correct
12 Correct 10 ms 1116 KB Output is correct
13 Correct 245 ms 22076 KB Output is correct
14 Correct 1 ms 204 KB Output is correct
15 Correct 1 ms 204 KB Output is correct
16 Correct 4 ms 716 KB Output is correct
17 Correct 99 ms 12044 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 66 ms 5756 KB Output is correct
22 Correct 230 ms 22024 KB Output is correct
23 Correct 231 ms 22028 KB Output is correct
24 Correct 258 ms 21960 KB Output is correct
25 Correct 94 ms 12160 KB Output is correct
26 Correct 94 ms 12028 KB Output is correct
27 Correct 257 ms 21952 KB Output is correct
28 Correct 236 ms 22020 KB Output is correct
29 Correct 115 ms 12028 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 59 ms 5756 KB Output is correct
5 Correct 226 ms 21956 KB Output is correct
6 Correct 234 ms 21984 KB Output is correct
7 Correct 273 ms 21956 KB Output is correct
8 Correct 1 ms 204 KB Output is correct
9 Correct 67 ms 5760 KB Output is correct
10 Correct 236 ms 22020 KB Output is correct
11 Correct 233 ms 21976 KB Output is correct
12 Correct 244 ms 21928 KB Output is correct
13 Correct 1 ms 204 KB Output is correct
14 Correct 1 ms 204 KB Output is correct
15 Correct 0 ms 204 KB Output is correct
16 Correct 57 ms 5732 KB Output is correct
17 Correct 227 ms 22040 KB Output is correct
18 Correct 228 ms 22012 KB Output is correct
19 Correct 253 ms 22012 KB Output is correct
20 Correct 227 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 13 ms 1100 KB Output is correct
7 Correct 263 ms 22028 KB Output is correct
8 Correct 1 ms 204 KB Output is correct
9 Correct 0 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 10 ms 1100 KB Output is correct
13 Correct 224 ms 21960 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 704 KB Output is correct
17 Correct 106 ms 12032 KB Output is correct
18 Correct 1 ms 204 KB Output is correct
19 Correct 1 ms 204 KB Output is correct
20 Correct 75 ms 6244 KB Output is correct
21 Correct 235 ms 23932 KB Output is correct
22 Correct 244 ms 24052 KB Output is correct
23 Correct 234 ms 24004 KB Output is correct
24 Correct 231 ms 23916 KB Output is correct
25 Correct 97 ms 14072 KB Output is correct
26 Correct 106 ms 13996 KB Output is correct
27 Correct 245 ms 23892 KB Output is correct
28 Correct 268 ms 23952 KB Output is correct
29 Correct 1 ms 204 KB Output is correct
30 Correct 0 ms 204 KB Output is correct
31 Correct 0 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 280 KB Output is correct
36 Correct 10 ms 1228 KB Output is correct
37 Correct 230 ms 21952 KB Output is correct
38 Correct 1 ms 204 KB Output is correct
39 Correct 1 ms 204 KB Output is correct
40 Correct 10 ms 1116 KB Output is correct
41 Correct 245 ms 22076 KB Output is correct
42 Correct 1 ms 204 KB Output is correct
43 Correct 1 ms 204 KB Output is correct
44 Correct 4 ms 716 KB Output is correct
45 Correct 99 ms 12044 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 66 ms 5756 KB Output is correct
50 Correct 230 ms 22024 KB Output is correct
51 Correct 231 ms 22028 KB Output is correct
52 Correct 258 ms 21960 KB Output is correct
53 Correct 94 ms 12160 KB Output is correct
54 Correct 94 ms 12028 KB Output is correct
55 Correct 257 ms 21952 KB Output is correct
56 Correct 236 ms 22020 KB Output is correct
57 Correct 115 ms 12028 KB Output is correct
58 Correct 1 ms 316 KB Output is correct
59 Correct 1 ms 204 KB Output is correct
60 Correct 8 ms 844 KB Output is correct
61 Correct 101 ms 14020 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 58 ms 6240 KB Output is correct
66 Correct 99 ms 14068 KB Output is correct
67 Correct 126 ms 14128 KB Output is correct
68 Correct 93 ms 14012 KB Output is correct
69 Correct 95 ms 14072 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 13 ms 1100 KB Output is correct
7 Correct 263 ms 22028 KB Output is correct
8 Correct 1 ms 204 KB Output is correct
9 Correct 0 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 10 ms 1100 KB Output is correct
13 Correct 224 ms 21960 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 704 KB Output is correct
17 Correct 106 ms 12032 KB Output is correct
18 Correct 1 ms 204 KB Output is correct
19 Correct 1 ms 204 KB Output is correct
20 Correct 75 ms 6244 KB Output is correct
21 Correct 235 ms 23932 KB Output is correct
22 Correct 244 ms 24052 KB Output is correct
23 Correct 234 ms 24004 KB Output is correct
24 Correct 231 ms 23916 KB Output is correct
25 Correct 97 ms 14072 KB Output is correct
26 Correct 106 ms 13996 KB Output is correct
27 Correct 245 ms 23892 KB Output is correct
28 Correct 268 ms 23952 KB Output is correct
29 Correct 1 ms 204 KB Output is correct
30 Correct 0 ms 204 KB Output is correct
31 Correct 0 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 280 KB Output is correct
36 Correct 10 ms 1228 KB Output is correct
37 Correct 230 ms 21952 KB Output is correct
38 Correct 1 ms 204 KB Output is correct
39 Correct 1 ms 204 KB Output is correct
40 Correct 10 ms 1116 KB Output is correct
41 Correct 245 ms 22076 KB Output is correct
42 Correct 1 ms 204 KB Output is correct
43 Correct 1 ms 204 KB Output is correct
44 Correct 4 ms 716 KB Output is correct
45 Correct 99 ms 12044 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 66 ms 5756 KB Output is correct
50 Correct 230 ms 22024 KB Output is correct
51 Correct 231 ms 22028 KB Output is correct
52 Correct 258 ms 21960 KB Output is correct
53 Correct 94 ms 12160 KB Output is correct
54 Correct 94 ms 12028 KB Output is correct
55 Correct 257 ms 21952 KB Output is correct
56 Correct 236 ms 22020 KB Output is correct
57 Correct 115 ms 12028 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 59 ms 5756 KB Output is correct
62 Correct 226 ms 21956 KB Output is correct
63 Correct 234 ms 21984 KB Output is correct
64 Correct 273 ms 21956 KB Output is correct
65 Correct 1 ms 204 KB Output is correct
66 Correct 67 ms 5760 KB Output is correct
67 Correct 236 ms 22020 KB Output is correct
68 Correct 233 ms 21976 KB Output is correct
69 Correct 244 ms 21928 KB Output is correct
70 Correct 1 ms 204 KB Output is correct
71 Correct 1 ms 204 KB Output is correct
72 Correct 0 ms 204 KB Output is correct
73 Correct 57 ms 5732 KB Output is correct
74 Correct 227 ms 22040 KB Output is correct
75 Correct 228 ms 22012 KB Output is correct
76 Correct 253 ms 22012 KB Output is correct
77 Correct 227 ms 22028 KB Output is correct
78 Correct 1 ms 316 KB Output is correct
79 Correct 1 ms 204 KB Output is correct
80 Correct 8 ms 844 KB Output is correct
81 Correct 101 ms 14020 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 58 ms 6240 KB Output is correct
86 Correct 99 ms 14068 KB Output is correct
87 Correct 126 ms 14128 KB Output is correct
88 Correct 93 ms 14012 KB Output is correct
89 Correct 95 ms 14072 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 788 KB Output is correct
93 Correct 123 ms 13984 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 30 ms 3688 KB Output is correct
98 Correct 97 ms 14056 KB Output is correct
99 Correct 119 ms 14056 KB Output is correct
100 Correct 99 ms 14060 KB Output is correct
101 Correct 96 ms 14076 KB Output is correct
102 Correct 98 ms 14020 KB Output is correct
103 Correct 101 ms 14184 KB Output is correct
104 Correct 94 ms 14072 KB Output is correct
105 Correct 100 ms 14060 KB Output is correct