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Submission #1039727

# Submission time Handle Problem Language Result Execution time Memory
1039727 2024-07-31T08:09:55 Z amirhoseinfar1385 Connecting Supertrees (IOI20_supertrees) C++17
56 / 100
 154 ms 22268 KB 
#include "supertrees.h"
#include<bits/stdc++.h>
using namespace std;
const int maxn=1000+10;
int n,vis[maxn];
vector<vector<int>>res;

struct dsu{
	int par[maxn];
	vector<int>adj[maxn];
	dsu(){
		for(int i=0;i<maxn;i++){
			par[i]=i;
		}
	}
	int root(int u){
		if(u==par[u]){
			return u;
		}
		return par[u]=root(par[u]);
	}
	void con(int u,int v){
		u=root(u),v=root(v);
		if(u!=v){
			par[u]=v;
			adj[v].push_back(u);
		}
	}
	vector<int>ret;
	void dfs(int u,int par=-1){
		ret.push_back(u);
		for(auto x:adj[u]){
			if(x==par){
				continue;
			}
			dfs(x,u);
		}
	}
	vector<int>allc(int u){
		ret.clear();
		u=root(u);
		dfs(u);
		return ret;
	}
}ds1,ds2;

void adde(int u,int v){
	res[u][v]=res[v][u]=1;
}

void addp(vector<int>a){
	for(int i=1;i<(int)a.size();i++){
		adde(a[i-1],a[i]);
	}
}

int construct(std::vector<std::vector<int>> p) {
	n = p.size();
	res.resize(n,vector<int>(n));
	for(int i=0;i<n;i++){
		for(int j=0;j<n;j++){
			if(p[i][j]==1){
				ds1.con(i,j);
			}
		}
	}
	for(int i=0;i<n;i++){
		if(vis[i]==0){
			vector<int>hey=ds1.allc(i);
			for(auto x:hey){
				vis[x]=1;
			}
			addp(hey);
		}
	}
	for(int i=0;i<n;i++){
		for(int j=0;j<n;j++){
			if(p[i][j]==2){
				ds2.con(ds1.root(i),ds1.root(j));
			}
		}
		vis[i]=0;
	}
	for(int i=0;i<n;i++){
		if(vis[i]==0){
			vector<int>hey=ds2.allc(i);
			for(auto x:hey){
				vis[x]=1;
			}
			addp(hey);
			if((int)hey.size()>1){
				adde(hey[0],hey.back());
			}
		}
	}
	int retrr=1;
	for(int i=0;i<n;i++){
		for(int j=0;j<n;j++){
			if(i==j){
				continue;
			}
			if(p[i][j]==1&&ds1.root(i)!=ds1.root(j)){
				retrr=-1;
			}
			if(p[i][j]==0&&(ds1.root(i)==ds1.root(j)||ds2.root(ds1.root(i))==ds2.root(ds1.root(j)))){
				retrr=-1;
			}
			if(p[i][j]==2&&(ds2.root(ds1.root(i))!=ds2.root(ds1.root(j))||ds1.root(i)==ds1.root(j))){
				retrr=-1;
			}
		}
	}
	if(retrr==-1){
		return 0;
	}
	build(res);
	return retrr;
}

Subtask #1
11.0 / 11.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 344 KB Output is correct
2 Correct 0 ms 344 KB Output is correct
3 Correct 0 ms 348 KB Output is correct
4 Correct 1 ms 348 KB Output is correct
5 Correct 0 ms 348 KB Output is correct
6 Correct 5 ms 1164 KB Output is correct
7 Correct 115 ms 22128 KB Output is correct

Subtask #2
10.0 / 10.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 344 KB Output is correct
2 Correct 0 ms 344 KB Output is correct
3 Correct 0 ms 348 KB Output is correct
4 Correct 1 ms 348 KB Output is correct
5 Correct 0 ms 348 KB Output is correct
6 Correct 5 ms 1164 KB Output is correct
7 Correct 115 ms 22128 KB Output is correct
8 Correct 0 ms 344 KB Output is correct
9 Correct 0 ms 348 KB Output is correct
10 Correct 0 ms 348 KB Output is correct
11 Correct 0 ms 348 KB Output is correct
12 Correct 5 ms 1372 KB Output is correct
13 Correct 118 ms 22032 KB Output is correct
14 Correct 1 ms 348 KB Output is correct
15 Correct 0 ms 348 KB Output is correct
16 Correct 3 ms 860 KB Output is correct
17 Correct 76 ms 12356 KB Output is correct
18 Correct 0 ms 344 KB Output is correct
19 Correct 1 ms 348 KB Output is correct
20 Correct 30 ms 5836 KB Output is correct
21 Correct 118 ms 22088 KB Output is correct
22 Correct 131 ms 22096 KB Output is correct
23 Correct 125 ms 22096 KB Output is correct
24 Correct 154 ms 22096 KB Output is correct
25 Correct 61 ms 12116 KB Output is correct
26 Correct 61 ms 12112 KB Output is correct
27 Correct 130 ms 22268 KB Output is correct
28 Correct 115 ms 22100 KB Output is correct

Subtask #3
0 / 19.0

# Verdict Execution time Memory Grader output
1 Correct 0 ms 344 KB Output is correct
2 Correct 0 ms 348 KB Output is correct
3 Correct 1 ms 348 KB Output is correct
4 Incorrect 0 ms 348 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 344 KB Output is correct
2 Correct 0 ms 348 KB Output is correct
3 Correct 0 ms 348 KB Output is correct
4 Correct 31 ms 5972 KB Output is correct
5 Correct 114 ms 22096 KB Output is correct
6 Correct 117 ms 22100 KB Output is correct
7 Correct 130 ms 22096 KB Output is correct
8 Correct 0 ms 344 KB Output is correct
9 Correct 30 ms 5964 KB Output is correct
10 Correct 120 ms 22104 KB Output is correct
11 Correct 117 ms 22084 KB Output is correct
12 Correct 140 ms 22096 KB Output is correct
13 Correct 0 ms 344 KB Output is correct
14 Correct 0 ms 348 KB Output is correct
15 Correct 0 ms 348 KB Output is correct
16 Correct 31 ms 5720 KB Output is correct
17 Correct 127 ms 22096 KB Output is correct
18 Correct 129 ms 22072 KB Output is correct
19 Correct 139 ms 22092 KB Output is correct
20 Correct 117 ms 22136 KB Output is correct

Subtask #5
0 / 21.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 344 KB Output is correct
2 Correct 0 ms 344 KB Output is correct
3 Correct 0 ms 348 KB Output is correct
4 Correct 1 ms 348 KB Output is correct
5 Correct 0 ms 348 KB Output is correct
6 Correct 5 ms 1164 KB Output is correct
7 Correct 115 ms 22128 KB Output is correct
8 Correct 0 ms 344 KB Output is correct
9 Correct 0 ms 348 KB Output is correct
10 Correct 0 ms 348 KB Output is correct
11 Correct 0 ms 348 KB Output is correct
12 Correct 5 ms 1372 KB Output is correct
13 Correct 118 ms 22032 KB Output is correct
14 Correct 1 ms 348 KB Output is correct
15 Correct 0 ms 348 KB Output is correct
16 Correct 3 ms 860 KB Output is correct
17 Correct 76 ms 12356 KB Output is correct
18 Correct 0 ms 344 KB Output is correct
19 Correct 1 ms 348 KB Output is correct
20 Correct 30 ms 5836 KB Output is correct
21 Correct 118 ms 22088 KB Output is correct
22 Correct 131 ms 22096 KB Output is correct
23 Correct 125 ms 22096 KB Output is correct
24 Correct 154 ms 22096 KB Output is correct
25 Correct 61 ms 12116 KB Output is correct
26 Correct 61 ms 12112 KB Output is correct
27 Correct 130 ms 22268 KB Output is correct
28 Correct 115 ms 22100 KB Output is correct
29 Correct 0 ms 344 KB Output is correct
30 Correct 0 ms 348 KB Output is correct
31 Correct 1 ms 348 KB Output is correct
32 Incorrect 0 ms 348 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 1 ms 344 KB Output is correct
2 Correct 0 ms 344 KB Output is correct
3 Correct 0 ms 348 KB Output is correct
4 Correct 1 ms 348 KB Output is correct
5 Correct 0 ms 348 KB Output is correct
6 Correct 5 ms 1164 KB Output is correct
7 Correct 115 ms 22128 KB Output is correct
8 Correct 0 ms 344 KB Output is correct
9 Correct 0 ms 348 KB Output is correct
10 Correct 0 ms 348 KB Output is correct
11 Correct 0 ms 348 KB Output is correct
12 Correct 5 ms 1372 KB Output is correct
13 Correct 118 ms 22032 KB Output is correct
14 Correct 1 ms 348 KB Output is correct
15 Correct 0 ms 348 KB Output is correct
16 Correct 3 ms 860 KB Output is correct
17 Correct 76 ms 12356 KB Output is correct
18 Correct 0 ms 344 KB Output is correct
19 Correct 1 ms 348 KB Output is correct
20 Correct 30 ms 5836 KB Output is correct
21 Correct 118 ms 22088 KB Output is correct
22 Correct 131 ms 22096 KB Output is correct
23 Correct 125 ms 22096 KB Output is correct
24 Correct 154 ms 22096 KB Output is correct
25 Correct 61 ms 12116 KB Output is correct
26 Correct 61 ms 12112 KB Output is correct
27 Correct 130 ms 22268 KB Output is correct
28 Correct 115 ms 22100 KB Output is correct
29 Correct 0 ms 344 KB Output is correct
30 Correct 0 ms 348 KB Output is correct
31 Correct 1 ms 348 KB Output is correct
32 Incorrect 0 ms 348 KB Answer gives possible 1 while actual possible 0
33 Halted 0 ms 0 KB -