oj.uz

Submission #507671

# Submission time Handle Problem Language Result Execution time Memory
507671 2022-01-13T00:47:35 Z jamezzz Connecting Supertrees (IOI20_supertrees) C++17
56 / 100
 225 ms 24140 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]!=p[j][i])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=0;j<n;++j){
			if(u.fp(i)==u.fp(j)&&p[i][j]!=1){
				return 0;
			}
		}
		for(int j:c1[i]){
			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;
				}
			}
		}
	}
	
	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){
			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 1 ms 204 KB Output is correct
3 Correct 0 ms 296 KB Output is correct
4 Correct 0 ms 204 KB Output is correct
5 Correct 1 ms 204 KB Output is correct
6 Correct 9 ms 1160 KB Output is correct
7 Correct 202 ms 24088 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 1 ms 204 KB Output is correct
3 Correct 0 ms 296 KB Output is correct
4 Correct 0 ms 204 KB Output is correct
5 Correct 1 ms 204 KB Output is correct
6 Correct 9 ms 1160 KB Output is correct
7 Correct 202 ms 24088 KB Output is correct
8 Correct 1 ms 296 KB Output is correct
9 Correct 0 ms 204 KB Output is correct
10 Correct 0 ms 204 KB Output is correct
11 Correct 0 ms 204 KB Output is correct
12 Correct 8 ms 1204 KB Output is correct
13 Correct 187 ms 24140 KB Output is correct
14 Correct 1 ms 204 KB Output is correct
15 Correct 0 ms 204 KB Output is correct
16 Correct 4 ms 692 KB Output is correct
17 Correct 95 ms 10108 KB Output is correct
18 Correct 0 ms 204 KB Output is correct
19 Correct 1 ms 204 KB Output is correct
20 Correct 50 ms 6272 KB Output is correct
21 Correct 208 ms 24040 KB Output is correct
22 Correct 187 ms 24056 KB Output is correct
23 Correct 212 ms 24052 KB Output is correct
24 Correct 187 ms 24048 KB Output is correct
25 Correct 83 ms 10180 KB Output is correct
26 Correct 75 ms 10052 KB Output is correct
27 Correct 225 ms 24024 KB Output is correct
28 Correct 183 ms 24104 KB Output is correct

Subtask #3
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 0 ms 276 KB Output is correct
4 Incorrect 0 ms 204 KB Answer gives possible 1 while actual possible 0
5 Halted 0 ms 0 KB -

Subtask #4
35.0 / 35.0

# Verdict Execution time Memory Grader output
1 Correct 0 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 49 ms 6260 KB Output is correct
5 Correct 208 ms 24028 KB Output is correct
6 Correct 195 ms 24052 KB Output is correct
7 Correct 220 ms 24096 KB Output is correct
8 Correct 0 ms 204 KB Output is correct
9 Correct 49 ms 6252 KB Output is correct
10 Correct 194 ms 24084 KB Output is correct
11 Correct 181 ms 24052 KB Output is correct
12 Correct 200 ms 24052 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 50 ms 6252 KB Output is correct
17 Correct 200 ms 24080 KB Output is correct
18 Correct 202 ms 24052 KB Output is correct
19 Correct 190 ms 24064 KB Output is correct
20 Correct 179 ms 24072 KB Output is correct

Subtask #5
0 / 21.0

# Verdict Execution time Memory Grader output
1 Correct 0 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 0 ms 204 KB Output is correct
5 Correct 1 ms 204 KB Output is correct
6 Correct 9 ms 1160 KB Output is correct
7 Correct 202 ms 24088 KB Output is correct
8 Correct 1 ms 296 KB Output is correct
9 Correct 0 ms 204 KB Output is correct
10 Correct 0 ms 204 KB Output is correct
11 Correct 0 ms 204 KB Output is correct
12 Correct 8 ms 1204 KB Output is correct
13 Correct 187 ms 24140 KB Output is correct
14 Correct 1 ms 204 KB Output is correct
15 Correct 0 ms 204 KB Output is correct
16 Correct 4 ms 692 KB Output is correct
17 Correct 95 ms 10108 KB Output is correct
18 Correct 0 ms 204 KB Output is correct
19 Correct 1 ms 204 KB Output is correct
20 Correct 50 ms 6272 KB Output is correct
21 Correct 208 ms 24040 KB Output is correct
22 Correct 187 ms 24056 KB Output is correct
23 Correct 212 ms 24052 KB Output is correct
24 Correct 187 ms 24048 KB Output is correct
25 Correct 83 ms 10180 KB Output is correct
26 Correct 75 ms 10052 KB Output is correct
27 Correct 225 ms 24024 KB Output is correct
28 Correct 183 ms 24104 KB Output is correct
29 Correct 1 ms 204 KB Output is correct
30 Correct 1 ms 204 KB Output is correct
31 Correct 0 ms 276 KB Output is correct
32 Incorrect 0 ms 204 KB Answer gives possible 1 while actual possible 0
33 Halted 0 ms 0 KB -

Subtask #6
0 / 4.0

# Verdict Execution time Memory Grader output
1 Correct 0 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 0 ms 204 KB Output is correct
5 Correct 1 ms 204 KB Output is correct
6 Correct 9 ms 1160 KB Output is correct
7 Correct 202 ms 24088 KB Output is correct
8 Correct 1 ms 296 KB Output is correct
9 Correct 0 ms 204 KB Output is correct
10 Correct 0 ms 204 KB Output is correct
11 Correct 0 ms 204 KB Output is correct
12 Correct 8 ms 1204 KB Output is correct
13 Correct 187 ms 24140 KB Output is correct
14 Correct 1 ms 204 KB Output is correct
15 Correct 0 ms 204 KB Output is correct
16 Correct 4 ms 692 KB Output is correct
17 Correct 95 ms 10108 KB Output is correct
18 Correct 0 ms 204 KB Output is correct
19 Correct 1 ms 204 KB Output is correct
20 Correct 50 ms 6272 KB Output is correct
21 Correct 208 ms 24040 KB Output is correct
22 Correct 187 ms 24056 KB Output is correct
23 Correct 212 ms 24052 KB Output is correct
24 Correct 187 ms 24048 KB Output is correct
25 Correct 83 ms 10180 KB Output is correct
26 Correct 75 ms 10052 KB Output is correct
27 Correct 225 ms 24024 KB Output is correct
28 Correct 183 ms 24104 KB Output is correct
29 Correct 1 ms 204 KB Output is correct
30 Correct 1 ms 204 KB Output is correct
31 Correct 0 ms 276 KB Output is correct
32 Incorrect 0 ms 204 KB Answer gives possible 1 while actual possible 0
33 Halted 0 ms 0 KB -