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Submission #800073

# Submission time Handle Problem Language Result Execution time Memory
800073 2023-08-01T09:48:11 Z alvingogo Connecting Supertrees (IOI20_supertrees) C++14
100 / 100
 183 ms 22088 KB 
#include "supertrees.h"
#include <bits/stdc++.h>
#pragma GCC optimize("Ofast")
#define fs first
#define sc second
#define p_q priority_queue
using namespace std;

struct DSU{
	vector<int> bo;
	void init(int x){
		bo.resize(x);
		iota(bo.begin(),bo.end(),0);
	}
	int find(int x){
		return bo[x]==x?x:bo[x]=find(bo[x]);
	}
	void merge(int x,int y){
		x=find(x);
		y=find(y);
		bo[x]=y;
	}
}dsu,dsu2;
int construct(vector<vector<int> > p) {
	int n=p.size();
	dsu.init(n);
	dsu2.init(n);
	for(int i=0;i<n;i++){
		for(int j=i+1;j<n;j++){
			if(p[i][j]){
				dsu.merge(i,j);
			}
			if(p[i][j]==3){
				return 0;
			}
		}
	}
	for(int i=0;i<n;i++){
		for(int j=i+1;j<n;j++){
			if((p[i][j]>0) + (dsu.find(i)==dsu.find(j))==1){
				return 0;
			}
		}
	}
	for(int i=0;i<n;i++){
		for(int j=i+1;j<n;j++){
			if(p[i][j]==1){
				dsu2.merge(i,j);
			}
		}
	}
	for(int i=0;i<n;i++){
		for(int j=i+1;j<n;j++){
			if(p[i][j]){
				if((p[i][j]==1) + (dsu2.find(i)==dsu2.find(j))==1){
					return 0;
				}
			}	
		}
	}
	vector<int> val(n);
	for(int i=0;i<n;i++){
		for(int j=i+1;j<n;j++){
			if(dsu.find(i)==dsu.find(j)){
				if(dsu2.find(i)!=dsu2.find(j)){
					if(val[dsu.find(i)] && val[dsu.find(i)]!=p[i][j]){
						return 0;
					}
					val[dsu.find(i)]=p[i][j];
				}
			}
		}
	}
	vector<vector<int> > vx(n);
	vector<vector<int> > bd(n,vector<int>(n));
	for(int i=0;i<n;i++){
		if(i!=dsu2.find(i)){
			bd[i][dsu2.find(i)]=bd[dsu2.find(i)][i]=1;
		}
		else{
			vx[dsu.find(i)].push_back(i);
		}
	}
	for(int i=0;i<n;i++){
		int y=vx[i].size();
		if(y>=3){
			if(val[i]==0){
				return 0;
			}
			if(val[i]==2){
				for(int j=0;j<y;j++){
					bd[vx[i][j]][vx[i][(j+1)%y]]=bd[vx[i][(j+1)%y]][vx[i][j]]=1;
				}
			}
			else if(val[i]==3){
				if(y<=3){
					return 0;
				}
				for(int j=0;j<y;j++){
					bd[vx[i][j]][vx[i][(j+1)%y]]=bd[vx[i][(j+1)%y]][vx[i][j]]=1;
				}
				bd[vx[i][0]][vx[i][2]]=bd[vx[i][2]][vx[i][0]]=1;
			}
		}
		else if(y==2){
			return 0;
		}
	}
	build(bd);
	return 1;
}

Subtask #1
11.0 / 11.0

# Verdict Execution time Memory Grader output
1 Correct 1 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 1 ms 212 KB Output is correct
5 Correct 0 ms 212 KB Output is correct
6 Correct 7 ms 1108 KB Output is correct
7 Correct 160 ms 22016 KB Output is correct

Subtask #2
10.0 / 10.0

# Verdict Execution time Memory Grader output
1 Correct 1 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 1 ms 212 KB Output is correct
5 Correct 0 ms 212 KB Output is correct
6 Correct 7 ms 1108 KB Output is correct
7 Correct 160 ms 22016 KB Output is correct
8 Correct 1 ms 212 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 212 KB Output is correct
12 Correct 6 ms 1108 KB Output is correct
13 Correct 154 ms 22016 KB Output is correct
14 Correct 0 ms 212 KB Output is correct
15 Correct 0 ms 212 KB Output is correct
16 Correct 3 ms 596 KB Output is correct
17 Correct 64 ms 8140 KB Output is correct
18 Correct 0 ms 212 KB Output is correct
19 Correct 0 ms 212 KB Output is correct
20 Correct 57 ms 5712 KB Output is correct
21 Correct 155 ms 22032 KB Output is correct
22 Correct 159 ms 22024 KB Output is correct
23 Correct 165 ms 22036 KB Output is correct
24 Correct 155 ms 22032 KB Output is correct
25 Correct 64 ms 8064 KB Output is correct
26 Correct 58 ms 8064 KB Output is correct
27 Correct 168 ms 22012 KB Output is correct
28 Correct 166 ms 22020 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 1 ms 212 KB Output is correct
7 Correct 0 ms 212 KB Output is correct
8 Correct 7 ms 1156 KB Output is correct
9 Correct 152 ms 22088 KB Output is correct
10 Correct 0 ms 212 KB Output is correct
11 Correct 0 ms 212 KB Output is correct
12 Correct 9 ms 1176 KB Output is correct
13 Correct 183 ms 22024 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 596 KB Output is correct
17 Correct 68 ms 8068 KB Output is correct
18 Correct 0 ms 212 KB Output is correct
19 Correct 0 ms 212 KB Output is correct
20 Correct 0 ms 212 KB Output is correct
21 Correct 39 ms 5696 KB Output is correct
22 Correct 157 ms 22028 KB Output is correct
23 Correct 161 ms 22076 KB Output is correct
24 Correct 166 ms 22032 KB Output is correct
25 Correct 64 ms 12164 KB Output is correct
26 Correct 63 ms 8076 KB Output is correct
27 Correct 165 ms 22028 KB Output is correct
28 Correct 166 ms 22036 KB Output is correct
29 Correct 65 ms 12176 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 0 ms 212 KB Output is correct
3 Correct 0 ms 212 KB Output is correct
4 Correct 39 ms 5708 KB Output is correct
5 Correct 159 ms 22020 KB Output is correct
6 Correct 151 ms 21980 KB Output is correct
7 Correct 169 ms 22024 KB Output is correct
8 Correct 1 ms 212 KB Output is correct
9 Correct 40 ms 5728 KB Output is correct
10 Correct 156 ms 22084 KB Output is correct
11 Correct 156 ms 22040 KB Output is correct
12 Correct 161 ms 22000 KB Output is correct
13 Correct 0 ms 212 KB Output is correct
14 Correct 0 ms 212 KB Output is correct
15 Correct 0 ms 212 KB Output is correct
16 Correct 38 ms 5676 KB Output is correct
17 Correct 157 ms 22052 KB Output is correct
18 Correct 155 ms 22008 KB Output is correct
19 Correct 157 ms 22040 KB Output is correct
20 Correct 165 ms 22020 KB Output is correct

Subtask #5
21.0 / 21.0

# Verdict Execution time Memory Grader output
1 Correct 1 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 1 ms 212 KB Output is correct
5 Correct 0 ms 212 KB Output is correct
6 Correct 7 ms 1108 KB Output is correct
7 Correct 160 ms 22016 KB Output is correct
8 Correct 1 ms 212 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 212 KB Output is correct
12 Correct 6 ms 1108 KB Output is correct
13 Correct 154 ms 22016 KB Output is correct
14 Correct 0 ms 212 KB Output is correct
15 Correct 0 ms 212 KB Output is correct
16 Correct 3 ms 596 KB Output is correct
17 Correct 64 ms 8140 KB Output is correct
18 Correct 0 ms 212 KB Output is correct
19 Correct 0 ms 212 KB Output is correct
20 Correct 57 ms 5712 KB Output is correct
21 Correct 155 ms 22032 KB Output is correct
22 Correct 159 ms 22024 KB Output is correct
23 Correct 165 ms 22036 KB Output is correct
24 Correct 155 ms 22032 KB Output is correct
25 Correct 64 ms 8064 KB Output is correct
26 Correct 58 ms 8064 KB Output is correct
27 Correct 168 ms 22012 KB Output is correct
28 Correct 166 ms 22020 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 1 ms 212 KB Output is correct
35 Correct 0 ms 212 KB Output is correct
36 Correct 7 ms 1156 KB Output is correct
37 Correct 152 ms 22088 KB Output is correct
38 Correct 0 ms 212 KB Output is correct
39 Correct 0 ms 212 KB Output is correct
40 Correct 9 ms 1176 KB Output is correct
41 Correct 183 ms 22024 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 596 KB Output is correct
45 Correct 68 ms 8068 KB Output is correct
46 Correct 0 ms 212 KB Output is correct
47 Correct 0 ms 212 KB Output is correct
48 Correct 0 ms 212 KB Output is correct
49 Correct 39 ms 5696 KB Output is correct
50 Correct 157 ms 22028 KB Output is correct
51 Correct 161 ms 22076 KB Output is correct
52 Correct 166 ms 22032 KB Output is correct
53 Correct 64 ms 12164 KB Output is correct
54 Correct 63 ms 8076 KB Output is correct
55 Correct 165 ms 22028 KB Output is correct
56 Correct 166 ms 22036 KB Output is correct
57 Correct 65 ms 12176 KB Output is correct
58 Correct 0 ms 212 KB Output is correct
59 Correct 1 ms 212 KB Output is correct
60 Correct 3 ms 596 KB Output is correct
61 Correct 67 ms 8192 KB Output is correct
62 Correct 1 ms 212 KB Output is correct
63 Correct 0 ms 212 KB Output is correct
64 Correct 0 ms 212 KB Output is correct
65 Correct 44 ms 5784 KB Output is correct
66 Correct 80 ms 8064 KB Output is correct
67 Correct 58 ms 8140 KB Output is correct
68 Correct 60 ms 8064 KB Output is correct
69 Correct 66 ms 12176 KB Output is correct

Subtask #6
4.0 / 4.0

# Verdict Execution time Memory Grader output
1 Correct 1 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 1 ms 212 KB Output is correct
5 Correct 0 ms 212 KB Output is correct
6 Correct 7 ms 1108 KB Output is correct
7 Correct 160 ms 22016 KB Output is correct
8 Correct 1 ms 212 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 212 KB Output is correct
12 Correct 6 ms 1108 KB Output is correct
13 Correct 154 ms 22016 KB Output is correct
14 Correct 0 ms 212 KB Output is correct
15 Correct 0 ms 212 KB Output is correct
16 Correct 3 ms 596 KB Output is correct
17 Correct 64 ms 8140 KB Output is correct
18 Correct 0 ms 212 KB Output is correct
19 Correct 0 ms 212 KB Output is correct
20 Correct 57 ms 5712 KB Output is correct
21 Correct 155 ms 22032 KB Output is correct
22 Correct 159 ms 22024 KB Output is correct
23 Correct 165 ms 22036 KB Output is correct
24 Correct 155 ms 22032 KB Output is correct
25 Correct 64 ms 8064 KB Output is correct
26 Correct 58 ms 8064 KB Output is correct
27 Correct 168 ms 22012 KB Output is correct
28 Correct 166 ms 22020 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 1 ms 212 KB Output is correct
35 Correct 0 ms 212 KB Output is correct
36 Correct 7 ms 1156 KB Output is correct
37 Correct 152 ms 22088 KB Output is correct
38 Correct 0 ms 212 KB Output is correct
39 Correct 0 ms 212 KB Output is correct
40 Correct 9 ms 1176 KB Output is correct
41 Correct 183 ms 22024 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 596 KB Output is correct
45 Correct 68 ms 8068 KB Output is correct
46 Correct 0 ms 212 KB Output is correct
47 Correct 0 ms 212 KB Output is correct
48 Correct 0 ms 212 KB Output is correct
49 Correct 39 ms 5696 KB Output is correct
50 Correct 157 ms 22028 KB Output is correct
51 Correct 161 ms 22076 KB Output is correct
52 Correct 166 ms 22032 KB Output is correct
53 Correct 64 ms 12164 KB Output is correct
54 Correct 63 ms 8076 KB Output is correct
55 Correct 165 ms 22028 KB Output is correct
56 Correct 166 ms 22036 KB Output is correct
57 Correct 65 ms 12176 KB Output is correct
58 Correct 0 ms 212 KB Output is correct
59 Correct 0 ms 212 KB Output is correct
60 Correct 0 ms 212 KB Output is correct
61 Correct 39 ms 5708 KB Output is correct
62 Correct 159 ms 22020 KB Output is correct
63 Correct 151 ms 21980 KB Output is correct
64 Correct 169 ms 22024 KB Output is correct
65 Correct 1 ms 212 KB Output is correct
66 Correct 40 ms 5728 KB Output is correct
67 Correct 156 ms 22084 KB Output is correct
68 Correct 156 ms 22040 KB Output is correct
69 Correct 161 ms 22000 KB Output is correct
70 Correct 0 ms 212 KB Output is correct
71 Correct 0 ms 212 KB Output is correct
72 Correct 0 ms 212 KB Output is correct
73 Correct 38 ms 5676 KB Output is correct
74 Correct 157 ms 22052 KB Output is correct
75 Correct 155 ms 22008 KB Output is correct
76 Correct 157 ms 22040 KB Output is correct
77 Correct 165 ms 22020 KB Output is correct
78 Correct 0 ms 212 KB Output is correct
79 Correct 1 ms 212 KB Output is correct
80 Correct 3 ms 596 KB Output is correct
81 Correct 67 ms 8192 KB Output is correct
82 Correct 1 ms 212 KB Output is correct
83 Correct 0 ms 212 KB Output is correct
84 Correct 0 ms 212 KB Output is correct
85 Correct 44 ms 5784 KB Output is correct
86 Correct 80 ms 8064 KB Output is correct
87 Correct 58 ms 8140 KB Output is correct
88 Correct 60 ms 8064 KB Output is correct
89 Correct 66 ms 12176 KB Output is correct
90 Correct 0 ms 212 KB Output is correct
91 Correct 0 ms 212 KB Output is correct
92 Correct 3 ms 596 KB Output is correct
93 Correct 75 ms 8064 KB Output is correct
94 Correct 1 ms 212 KB Output is correct
95 Correct 0 ms 212 KB Output is correct
96 Correct 0 ms 212 KB Output is correct
97 Correct 15 ms 2192 KB Output is correct
98 Correct 57 ms 8080 KB Output is correct
99 Correct 56 ms 8100 KB Output is correct
100 Correct 57 ms 8072 KB Output is correct
101 Correct 56 ms 8068 KB Output is correct
102 Correct 57 ms 8068 KB Output is correct
103 Correct 71 ms 8140 KB Output is correct
104 Correct 61 ms 8076 KB Output is correct
105 Correct 62 ms 8120 KB Output is correct