oj.uz

Submission #508090

# Submission time Handle Problem Language Result Execution time Memory
508090 2022-01-13T06:17:41 Z jamezzz Connecting Supertrees (IOI20_supertrees) C++17
100 / 100
 261 ms 24180 KB 
#include "supertrees.h"
#include <bits/stdc++.h>
using namespace std;

struct ufds{
	int par[1005],rnk[1005];
	void init(int n){
		for(int i=0;i<n;++i)par[i]=i,rnk[i]=0;
	}
	int fp(int i){return (par[i]==i)?i:par[i]=fp(par[i]);}
	void join(int x,int y){
		x=fp(x),y=fp(y);
		if(x==y)return;
		if(rnk[x]<rnk[y])par[x]=y;
		else par[y]=x;
		if(rnk[x]==rnk[y])++rnk[x];
	}
}u;

int construct(vector<vector<int>> p){
	int n=p.size();
	u.init(n);
	for(int i=0;i<n;++i){
		for(int j=0;j<n;++j){
			if(p[i][j]==3)return 0;
			if(p[i][j]!=0)u.join(i,j);
		}
	}
	vector<vector<int>> c1;
	c1.resize(n);
	for(int i=0;i<n;++i){
		c1[u.fp(i)].push_back(i);
		for(int j=0;j<n;++j){
			if(u.fp(i)==u.fp(j)&&p[i][j]==0){
				return 0;
			}
		}
	}

	u.init(n);
	for(int i=0;i<n;++i){
		for(int j=0;j<n;++j){
			if(p[i][j]==1)u.join(i,j);
		}
	}
	vector<vector<int>> c2,c3;
	c2.resize(n);
	c3.resize(n);
	for(int i=0;i<n;++i){
		c2[u.fp(i)].push_back(i);
		for(int j:c1[i]){//single cycle
			if(u.fp(j)==j)c3[i].push_back(j);
		}
	}
	
	for(int i=0;i<n;++i){
		for(int a:c1[i]){
			for(int b:c1[i]){
				if(u.fp(a)!=u.fp(b)&&p[a][b]!=2){
					return 0;
				}
				if(u.fp(a)==u.fp(b)&&p[a][b]!=1){
					return 0;
				}
			}
		}
	}
	
	vector<vector<int>> answer;
	answer.resize(n);
	for(int i=0;i<n;++i)answer[i].resize(n);
	for(int i=0;i<n;++i){
		for(int j:c2[i]){
			if(i!=j)answer[i][j]=answer[j][i]=1;
		}
	}
	for(int i=0;i<n;++i){
		if(c3[i].size()==2)return 0;
		if(c3[i].size()>=3){
			int m=c3[i].size();
			for(int j=0;j<m;++j){
				int a=c3[i][j],b=c3[i][(j+1)%m];
				if(a!=b)answer[a][b]=answer[b][a]=1;
			}
		}
	}
	build(answer);
	return 1;
}

Subtask #1
11.0 / 11.0

# Verdict Execution time Memory Grader output
1 Correct 0 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 292 KB Output is correct
5 Correct 1 ms 204 KB Output is correct
6 Correct 8 ms 1200 KB Output is correct
7 Correct 184 ms 24076 KB Output is correct

Subtask #2
10.0 / 10.0

# Verdict Execution time Memory Grader output
1 Correct 0 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 292 KB Output is correct
5 Correct 1 ms 204 KB Output is correct
6 Correct 8 ms 1200 KB Output is correct
7 Correct 184 ms 24076 KB Output is correct
8 Correct 0 ms 296 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 8 ms 1208 KB Output is correct
13 Correct 190 ms 24148 KB Output is correct
14 Correct 0 ms 204 KB Output is correct
15 Correct 1 ms 280 KB Output is correct
16 Correct 4 ms 656 KB Output is correct
17 Correct 78 ms 10096 KB Output is correct
18 Correct 0 ms 204 KB Output is correct
19 Correct 1 ms 296 KB Output is correct
20 Correct 54 ms 6244 KB Output is correct
21 Correct 185 ms 24052 KB Output is correct
22 Correct 172 ms 24056 KB Output is correct
23 Correct 200 ms 24016 KB Output is correct
24 Correct 198 ms 24132 KB Output is correct
25 Correct 67 ms 10100 KB Output is correct
26 Correct 65 ms 10092 KB Output is correct
27 Correct 200 ms 23992 KB Output is correct
28 Correct 180 ms 24172 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 296 KB Output is correct
3 Correct 0 ms 204 KB Output is correct
4 Correct 1 ms 204 KB Output is correct
5 Correct 0 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 9 ms 1284 KB Output is correct
9 Correct 188 ms 24180 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 1228 KB Output is correct
13 Correct 210 ms 24076 KB Output is correct
14 Correct 1 ms 284 KB Output is correct
15 Correct 1 ms 204 KB Output is correct
16 Correct 7 ms 588 KB Output is correct
17 Correct 104 ms 10156 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 52 ms 6208 KB Output is correct
22 Correct 261 ms 24036 KB Output is correct
23 Correct 192 ms 24060 KB Output is correct
24 Correct 234 ms 24088 KB Output is correct
25 Correct 80 ms 14188 KB Output is correct
26 Correct 74 ms 10108 KB Output is correct
27 Correct 233 ms 24048 KB Output is correct
28 Correct 222 ms 24056 KB Output is correct
29 Correct 85 ms 14192 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 0 ms 296 KB Output is correct
4 Correct 51 ms 6260 KB Output is correct
5 Correct 179 ms 24088 KB Output is correct
6 Correct 195 ms 24132 KB Output is correct
7 Correct 206 ms 24096 KB Output is correct
8 Correct 1 ms 204 KB Output is correct
9 Correct 49 ms 6252 KB Output is correct
10 Correct 173 ms 24172 KB Output is correct
11 Correct 216 ms 24044 KB Output is correct
12 Correct 186 ms 24088 KB Output is correct
13 Correct 1 ms 204 KB Output is correct
14 Correct 0 ms 204 KB Output is correct
15 Correct 0 ms 204 KB Output is correct
16 Correct 43 ms 6240 KB Output is correct
17 Correct 197 ms 24040 KB Output is correct
18 Correct 187 ms 24080 KB Output is correct
19 Correct 184 ms 24044 KB Output is correct
20 Correct 194 ms 24048 KB Output is correct

Subtask #5
21.0 / 21.0

# Verdict Execution time Memory Grader output
1 Correct 0 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 292 KB Output is correct
5 Correct 1 ms 204 KB Output is correct
6 Correct 8 ms 1200 KB Output is correct
7 Correct 184 ms 24076 KB Output is correct
8 Correct 0 ms 296 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 8 ms 1208 KB Output is correct
13 Correct 190 ms 24148 KB Output is correct
14 Correct 0 ms 204 KB Output is correct
15 Correct 1 ms 280 KB Output is correct
16 Correct 4 ms 656 KB Output is correct
17 Correct 78 ms 10096 KB Output is correct
18 Correct 0 ms 204 KB Output is correct
19 Correct 1 ms 296 KB Output is correct
20 Correct 54 ms 6244 KB Output is correct
21 Correct 185 ms 24052 KB Output is correct
22 Correct 172 ms 24056 KB Output is correct
23 Correct 200 ms 24016 KB Output is correct
24 Correct 198 ms 24132 KB Output is correct
25 Correct 67 ms 10100 KB Output is correct
26 Correct 65 ms 10092 KB Output is correct
27 Correct 200 ms 23992 KB Output is correct
28 Correct 180 ms 24172 KB Output is correct
29 Correct 1 ms 204 KB Output is correct
30 Correct 0 ms 296 KB Output is correct
31 Correct 0 ms 204 KB Output is correct
32 Correct 1 ms 204 KB Output is correct
33 Correct 0 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 9 ms 1284 KB Output is correct
37 Correct 188 ms 24180 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 1228 KB Output is correct
41 Correct 210 ms 24076 KB Output is correct
42 Correct 1 ms 284 KB Output is correct
43 Correct 1 ms 204 KB Output is correct
44 Correct 7 ms 588 KB Output is correct
45 Correct 104 ms 10156 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 52 ms 6208 KB Output is correct
50 Correct 261 ms 24036 KB Output is correct
51 Correct 192 ms 24060 KB Output is correct
52 Correct 234 ms 24088 KB Output is correct
53 Correct 80 ms 14188 KB Output is correct
54 Correct 74 ms 10108 KB Output is correct
55 Correct 233 ms 24048 KB Output is correct
56 Correct 222 ms 24056 KB Output is correct
57 Correct 85 ms 14192 KB Output is correct
58 Correct 0 ms 332 KB Output is correct
59 Correct 1 ms 204 KB Output is correct
60 Correct 4 ms 688 KB Output is correct
61 Correct 94 ms 10092 KB Output is correct
62 Correct 0 ms 204 KB Output is correct
63 Correct 1 ms 204 KB Output is correct
64 Correct 0 ms 204 KB Output is correct
65 Correct 47 ms 6244 KB Output is correct
66 Correct 66 ms 10092 KB Output is correct
67 Correct 72 ms 10052 KB Output is correct
68 Correct 70 ms 10092 KB Output is correct
69 Correct 93 ms 14192 KB Output is correct

Subtask #6
4.0 / 4.0

# Verdict Execution time Memory Grader output
1 Correct 0 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 292 KB Output is correct
5 Correct 1 ms 204 KB Output is correct
6 Correct 8 ms 1200 KB Output is correct
7 Correct 184 ms 24076 KB Output is correct
8 Correct 0 ms 296 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 8 ms 1208 KB Output is correct
13 Correct 190 ms 24148 KB Output is correct
14 Correct 0 ms 204 KB Output is correct
15 Correct 1 ms 280 KB Output is correct
16 Correct 4 ms 656 KB Output is correct
17 Correct 78 ms 10096 KB Output is correct
18 Correct 0 ms 204 KB Output is correct
19 Correct 1 ms 296 KB Output is correct
20 Correct 54 ms 6244 KB Output is correct
21 Correct 185 ms 24052 KB Output is correct
22 Correct 172 ms 24056 KB Output is correct
23 Correct 200 ms 24016 KB Output is correct
24 Correct 198 ms 24132 KB Output is correct
25 Correct 67 ms 10100 KB Output is correct
26 Correct 65 ms 10092 KB Output is correct
27 Correct 200 ms 23992 KB Output is correct
28 Correct 180 ms 24172 KB Output is correct
29 Correct 1 ms 204 KB Output is correct
30 Correct 0 ms 296 KB Output is correct
31 Correct 0 ms 204 KB Output is correct
32 Correct 1 ms 204 KB Output is correct
33 Correct 0 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 9 ms 1284 KB Output is correct
37 Correct 188 ms 24180 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 1228 KB Output is correct
41 Correct 210 ms 24076 KB Output is correct
42 Correct 1 ms 284 KB Output is correct
43 Correct 1 ms 204 KB Output is correct
44 Correct 7 ms 588 KB Output is correct
45 Correct 104 ms 10156 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 52 ms 6208 KB Output is correct
50 Correct 261 ms 24036 KB Output is correct
51 Correct 192 ms 24060 KB Output is correct
52 Correct 234 ms 24088 KB Output is correct
53 Correct 80 ms 14188 KB Output is correct
54 Correct 74 ms 10108 KB Output is correct
55 Correct 233 ms 24048 KB Output is correct
56 Correct 222 ms 24056 KB Output is correct
57 Correct 85 ms 14192 KB Output is correct
58 Correct 1 ms 204 KB Output is correct
59 Correct 1 ms 204 KB Output is correct
60 Correct 0 ms 296 KB Output is correct
61 Correct 51 ms 6260 KB Output is correct
62 Correct 179 ms 24088 KB Output is correct
63 Correct 195 ms 24132 KB Output is correct
64 Correct 206 ms 24096 KB Output is correct
65 Correct 1 ms 204 KB Output is correct
66 Correct 49 ms 6252 KB Output is correct
67 Correct 173 ms 24172 KB Output is correct
68 Correct 216 ms 24044 KB Output is correct
69 Correct 186 ms 24088 KB Output is correct
70 Correct 1 ms 204 KB Output is correct
71 Correct 0 ms 204 KB Output is correct
72 Correct 0 ms 204 KB Output is correct
73 Correct 43 ms 6240 KB Output is correct
74 Correct 197 ms 24040 KB Output is correct
75 Correct 187 ms 24080 KB Output is correct
76 Correct 184 ms 24044 KB Output is correct
77 Correct 194 ms 24048 KB Output is correct
78 Correct 0 ms 332 KB Output is correct
79 Correct 1 ms 204 KB Output is correct
80 Correct 4 ms 688 KB Output is correct
81 Correct 94 ms 10092 KB Output is correct
82 Correct 0 ms 204 KB Output is correct
83 Correct 1 ms 204 KB Output is correct
84 Correct 0 ms 204 KB Output is correct
85 Correct 47 ms 6244 KB Output is correct
86 Correct 66 ms 10092 KB Output is correct
87 Correct 72 ms 10052 KB Output is correct
88 Correct 70 ms 10092 KB Output is correct
89 Correct 93 ms 14192 KB Output is correct
90 Correct 0 ms 204 KB Output is correct
91 Correct 0 ms 300 KB Output is correct
92 Correct 5 ms 588 KB Output is correct
93 Correct 69 ms 10020 KB Output is correct
94 Correct 0 ms 204 KB Output is correct
95 Correct 0 ms 204 KB Output is correct
96 Correct 1 ms 204 KB Output is correct
97 Correct 21 ms 2672 KB Output is correct
98 Correct 74 ms 10096 KB Output is correct
99 Correct 64 ms 10020 KB Output is correct
100 Correct 67 ms 10096 KB Output is correct
101 Correct 77 ms 10092 KB Output is correct
102 Correct 67 ms 10096 KB Output is correct
103 Correct 69 ms 10096 KB Output is correct
104 Correct 67 ms 10076 KB Output is correct
105 Correct 68 ms 10052 KB Output is correct