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Submission #1039711

# Submission time Handle Problem Language Result Execution time Memory
1039711 2024-07-31T08:05:36 Z amirhoseinfar1385 Connecting Supertrees (IOI20_supertrees) C++17
21 / 100
 163 ms 24148 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(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(i)==ds2.root(j))){
				retrr=-1;
			}
			if(p[i][j]==2&&ds2.root(i)!=ds2.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 348 KB Output is correct
3 Correct 1 ms 348 KB Output is correct
4 Correct 0 ms 348 KB Output is correct
5 Correct 0 ms 348 KB Output is correct
6 Correct 5 ms 1372 KB Output is correct
7 Correct 117 ms 23888 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 348 KB Output is correct
3 Correct 1 ms 348 KB Output is correct
4 Correct 0 ms 348 KB Output is correct
5 Correct 0 ms 348 KB Output is correct
6 Correct 5 ms 1372 KB Output is correct
7 Correct 117 ms 23888 KB Output is correct
8 Correct 0 ms 348 KB Output is correct
9 Correct 0 ms 496 KB Output is correct
10 Correct 0 ms 344 KB Output is correct
11 Correct 0 ms 348 KB Output is correct
12 Correct 10 ms 1396 KB Output is correct
13 Correct 135 ms 23968 KB Output is correct
14 Correct 0 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 75 ms 14132 KB Output is correct
18 Correct 0 ms 348 KB Output is correct
19 Correct 0 ms 348 KB Output is correct
20 Correct 35 ms 6424 KB Output is correct
21 Correct 124 ms 24148 KB Output is correct
22 Correct 119 ms 24148 KB Output is correct
23 Correct 133 ms 24000 KB Output is correct
24 Correct 154 ms 24108 KB Output is correct
25 Correct 94 ms 14164 KB Output is correct
26 Correct 59 ms 14272 KB Output is correct
27 Correct 132 ms 24144 KB Output is correct
28 Correct 125 ms 23984 KB Output is correct

Subtask #3
0 / 19.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 348 KB Output is correct
2 Correct 0 ms 348 KB Output is correct
3 Correct 0 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
0 / 35.0

# Verdict Execution time Memory Grader output
1 Correct 0 ms 348 KB Output is correct
2 Correct 0 ms 348 KB Output is correct
3 Correct 1 ms 348 KB Output is correct
4 Correct 30 ms 6296 KB Output is correct
5 Correct 121 ms 23892 KB Output is correct
6 Correct 117 ms 23972 KB Output is correct
7 Correct 156 ms 23876 KB Output is correct
8 Correct 0 ms 348 KB Output is correct
9 Correct 31 ms 6332 KB Output is correct
10 Correct 163 ms 23968 KB Output is correct
11 Correct 147 ms 23892 KB Output is correct
12 Correct 134 ms 23996 KB Output is correct
13 Correct 0 ms 348 KB Output is correct
14 Correct 1 ms 344 KB Output is correct
15 Incorrect 1 ms 348 KB Answer gives possible 0 while actual possible 1
16 Halted 0 ms 0 KB -

Subtask #5
0 / 21.0

# Verdict Execution time Memory Grader output
1 Correct 1 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 Correct 0 ms 348 KB Output is correct
5 Correct 0 ms 348 KB Output is correct
6 Correct 5 ms 1372 KB Output is correct
7 Correct 117 ms 23888 KB Output is correct
8 Correct 0 ms 348 KB Output is correct
9 Correct 0 ms 496 KB Output is correct
10 Correct 0 ms 344 KB Output is correct
11 Correct 0 ms 348 KB Output is correct
12 Correct 10 ms 1396 KB Output is correct
13 Correct 135 ms 23968 KB Output is correct
14 Correct 0 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 75 ms 14132 KB Output is correct
18 Correct 0 ms 348 KB Output is correct
19 Correct 0 ms 348 KB Output is correct
20 Correct 35 ms 6424 KB Output is correct
21 Correct 124 ms 24148 KB Output is correct
22 Correct 119 ms 24148 KB Output is correct
23 Correct 133 ms 24000 KB Output is correct
24 Correct 154 ms 24108 KB Output is correct
25 Correct 94 ms 14164 KB Output is correct
26 Correct 59 ms 14272 KB Output is correct
27 Correct 132 ms 24144 KB Output is correct
28 Correct 125 ms 23984 KB Output is correct
29 Correct 1 ms 348 KB Output is correct
30 Correct 0 ms 348 KB Output is correct
31 Correct 0 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 348 KB Output is correct
3 Correct 1 ms 348 KB Output is correct
4 Correct 0 ms 348 KB Output is correct
5 Correct 0 ms 348 KB Output is correct
6 Correct 5 ms 1372 KB Output is correct
7 Correct 117 ms 23888 KB Output is correct
8 Correct 0 ms 348 KB Output is correct
9 Correct 0 ms 496 KB Output is correct
10 Correct 0 ms 344 KB Output is correct
11 Correct 0 ms 348 KB Output is correct
12 Correct 10 ms 1396 KB Output is correct
13 Correct 135 ms 23968 KB Output is correct
14 Correct 0 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 75 ms 14132 KB Output is correct
18 Correct 0 ms 348 KB Output is correct
19 Correct 0 ms 348 KB Output is correct
20 Correct 35 ms 6424 KB Output is correct
21 Correct 124 ms 24148 KB Output is correct
22 Correct 119 ms 24148 KB Output is correct
23 Correct 133 ms 24000 KB Output is correct
24 Correct 154 ms 24108 KB Output is correct
25 Correct 94 ms 14164 KB Output is correct
26 Correct 59 ms 14272 KB Output is correct
27 Correct 132 ms 24144 KB Output is correct
28 Correct 125 ms 23984 KB Output is correct
29 Correct 1 ms 348 KB Output is correct
30 Correct 0 ms 348 KB Output is correct
31 Correct 0 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 -