oj.uz

Submission #794219

# Submission time Handle Problem Language Result Execution time Memory
794219 2023-07-26T10:59:53 Z MODDI Connecting Supertrees (IOI20_supertrees) C++14
21 / 100
 167 ms 22072 KB 
#include "supertrees.h"
#include <bits/stdc++.h>
//#include "grader.cpp"
using namespace std;
#define pb push_back
#define mp make_pair
typedef long long ll;
typedef pair<int,int> pii;
typedef pair<ll,ll> pll;
typedef vector<int> vi;
typedef vector<ll> vl;
struct DSU{
	vi parent, size;
	vector<bool> kec, dvojka;
	void init(int n){
		kec.resize(n, false);
		dvojka.resize(n, false);
		for(int i = 0; i < n; i++){
			parent.pb(i);
			size.pb(1);
		}
	}
	bool ok(int v){
		if(dvojka[v] && kec[v])	return false;
		return true;
	}
	bool is_dva(int v){
		return dvojka[v];
	}
	int find_parent(int v){
		if(parent[v] == v)	return v;
		return parent[v] = find_parent(parent[v]);
	}
	void merge(int a, int b, int tip){
		a = find_parent(a);
		b = find_parent(b);
		bool done = false;
		if(a != b){
			if(size[b] > size[a])
				swap(a, b);
			
			done = true;
			if(tip == 1)	kec[a] = true;
			if(tip == 2)	dvojka[a] = true;	
			parent[b] = a;
			size[a] += size[b];
		}
		if(!done){
			if(tip == 1)	kec[a] = true;
			if(tip == 2) 	dvojka[a] = true;
		}
	}
};
int construct(vector<vi> p) {
	int n = p.size();
	vector<vi> answer;
	bool possible = true;
	for(int i = 0; i < n; i++){
		for(auto t : p[i]){
			if(t == 3)	possible = false;
		}
	}
	for(int i = 0; i < n; i++){
		vi pom(n,0);
		answer.pb(pom);
	}
	DSU dsu;
	dsu.init(n);
	for(int i = 0; i < n; i++){
		for(int j = i+1; j < n; j++){
			if(p[i][j]>=1 && p[i][j]<=2){
				dsu.merge(i, j, p[i][j]);
				dsu.merge(j, i, p[i][j]);
			}
			else
				continue;
		}
	}
	for(int i = 0; i < n; i++){
		for(int j = i + 1; j < n; j++){
			if(p[i][j] == 0 && dsu.find_parent(i) == dsu.find_parent(j)){
				possible = false;
			}
		}
	}
	for(int i = 0; i < n; i++){
		int a = dsu.find_parent(i);
		if(!dsu.ok(a))
			possible = false;
	}
	int last[n], first[n];
	memset(first, -1, sizeof first);
	memset(last, -1, sizeof last);
	for(int i = 0; i < n; i++){
		int a = dsu.find_parent(i);
		if(last[a] == -1){	
			last[a] = i;
			first[a] = i;
		}
		else{
			answer[i][last[a]] = 1;
			answer[last[a]][i] = 1;
			last[a] = i;
		}
	}
	for(int i = 0; i < n; i++){
		int a = dsu.find_parent(i);
		if(dsu.is_dva(a) && first[a] != last[a]){
			answer[first[a]][last[a]] = 1;
			answer[last[a]][first[a]] = 1;
 		}
 		else if(dsu.is_dva(a) && first[a] == last[a])	possible = false;
	}
	if(!possible)	return 0;
	build(answer);
	return 1;
}

Subtask #1
11.0 / 11.0

# 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 7 ms 1108 KB Output is correct
7 Correct 161 ms 22032 KB Output is correct

Subtask #2
10.0 / 10.0

# 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 7 ms 1108 KB Output is correct
7 Correct 161 ms 22032 KB Output is correct
8 Correct 0 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 146 ms 22036 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 724 KB Output is correct
17 Correct 76 ms 12048 KB Output is correct
18 Correct 0 ms 212 KB Output is correct
19 Correct 0 ms 212 KB Output is correct
20 Correct 37 ms 5716 KB Output is correct
21 Correct 154 ms 21964 KB Output is correct
22 Correct 145 ms 22016 KB Output is correct
23 Correct 167 ms 21984 KB Output is correct
24 Correct 147 ms 21968 KB Output is correct
25 Correct 67 ms 12048 KB Output is correct
26 Correct 60 ms 12048 KB Output is correct
27 Correct 160 ms 22028 KB Output is correct
28 Correct 145 ms 22008 KB Output is correct

Subtask #3
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 Incorrect 0 ms 212 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 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 37 ms 5756 KB Output is correct
5 Correct 150 ms 21964 KB Output is correct
6 Correct 152 ms 22072 KB Output is correct
7 Correct 160 ms 21968 KB Output is correct
8 Correct 0 ms 212 KB Output is correct
9 Correct 38 ms 5764 KB Output is correct
10 Correct 152 ms 22008 KB Output is correct
11 Correct 149 ms 22056 KB Output is correct
12 Correct 161 ms 22016 KB Output is correct
13 Correct 0 ms 212 KB Output is correct
14 Correct 0 ms 212 KB Output is correct
15 Incorrect 0 ms 212 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 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 7 ms 1108 KB Output is correct
7 Correct 161 ms 22032 KB Output is correct
8 Correct 0 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 146 ms 22036 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 724 KB Output is correct
17 Correct 76 ms 12048 KB Output is correct
18 Correct 0 ms 212 KB Output is correct
19 Correct 0 ms 212 KB Output is correct
20 Correct 37 ms 5716 KB Output is correct
21 Correct 154 ms 21964 KB Output is correct
22 Correct 145 ms 22016 KB Output is correct
23 Correct 167 ms 21984 KB Output is correct
24 Correct 147 ms 21968 KB Output is correct
25 Correct 67 ms 12048 KB Output is correct
26 Correct 60 ms 12048 KB Output is correct
27 Correct 160 ms 22028 KB Output is correct
28 Correct 145 ms 22008 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 Incorrect 0 ms 212 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 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 7 ms 1108 KB Output is correct
7 Correct 161 ms 22032 KB Output is correct
8 Correct 0 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 146 ms 22036 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 724 KB Output is correct
17 Correct 76 ms 12048 KB Output is correct
18 Correct 0 ms 212 KB Output is correct
19 Correct 0 ms 212 KB Output is correct
20 Correct 37 ms 5716 KB Output is correct
21 Correct 154 ms 21964 KB Output is correct
22 Correct 145 ms 22016 KB Output is correct
23 Correct 167 ms 21984 KB Output is correct
24 Correct 147 ms 21968 KB Output is correct
25 Correct 67 ms 12048 KB Output is correct
26 Correct 60 ms 12048 KB Output is correct
27 Correct 160 ms 22028 KB Output is correct
28 Correct 145 ms 22008 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 Incorrect 0 ms 212 KB Answer gives possible 1 while actual possible 0
33 Halted 0 ms 0 KB -