oj.uz

Submission #839159

# Submission time Handle Problem Language Result Execution time Memory
839159 2023-08-28T22:04:51 Z tranxuanbach Connecting Supertrees (IOI20_supertrees) C++17
56 / 100
 167 ms 27984 KB 
#include "supertrees.h"
#include <bits/stdc++.h>
using namespace std;

#define isz(a) ((signed)a.size())

const int N = 1e3 + 5;

int n;
vector <vector <int>> cnt_path;

vector <vector <int>> adj;

bool check_clique(const vector <int>& a, int l, int r){
	for (auto u: a){
		for (auto v: a){
			if (u >= v){
				continue;
			}
			if (not (l <= cnt_path[u][v] and cnt_path[u][v] <= r)){
				return false;
			}
		}
	}
	return true;
}

vector <bool> vis;

void dfs(int u, int l, int r, vector <int>& a){
	vis[u] = true;
	a.emplace_back(u);
	for (int v = 0; v < n; v++){
		if (not vis[v] and l <= cnt_path[u][v] and cnt_path[u][v] <= r){
			dfs(v, l, r, a);
		}
	}
}

vector <bool> is_end;

int construct(vector <vector <int>> _p){
	n = isz(_p);
	cnt_path = _p;

	adj.assign(n, vector <int>(n, 0));
	vis.assign(n, false);
	is_end.assign(n, false);

	for (int u = 0; u < n; u++){
		if (vis[u]){
			continue;
		}
		vector <int> a;
		dfs(u, 1, 1, a);
		if (not check_clique(a, 1, 1)){
			return 0;
		}
		for (int i = 0; i + 1 < isz(a); i++){
			int u = a[i], v = a[i + 1];
			adj[u][v] = adj[v][u] = 1;
		}
		is_end[a.back()] = true;
	}

	vis.assign(n, false);
	for (int u = 0; u < n; u++){
		if (vis[u]){
			continue;
		}
		vector <int> a;
		dfs(u, 1, 2, a);
		if (not check_clique(a, 1, 2)){
			return 0;
		}
		vector <int> b;
		for (auto u: a){
			if (is_end[u]){
				b.emplace_back(u);
			}
		}
		if (isz(b) == 1){
			continue;
		}
		for (int i = 0; i < isz(b); i++){
			int u = b[i], v = b[(i + 1) % isz(b)];
			adj[u][v] = adj[v][u] = 1;
		}
	}

	for (int u = 0; u < n; u++){
		for (int v = 0; v < n; v++){
			if (cnt_path[u][v] == 3){
				return 0;
			}
		}
	}

	build(adj);
	return 1;
}

Subtask #1
11.0 / 11.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 212 KB Output is correct
2 Correct 1 ms 212 KB Output is correct
3 Correct 0 ms 212 KB Output is correct
4 Correct 1 ms 212 KB Output is correct
5 Correct 1 ms 212 KB Output is correct
6 Correct 8 ms 1364 KB Output is correct
7 Correct 156 ms 27980 KB Output is correct

Subtask #2
10.0 / 10.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 212 KB Output is correct
2 Correct 1 ms 212 KB Output is correct
3 Correct 0 ms 212 KB Output is correct
4 Correct 1 ms 212 KB Output is correct
5 Correct 1 ms 212 KB Output is correct
6 Correct 8 ms 1364 KB Output is correct
7 Correct 156 ms 27980 KB Output is correct
8 Correct 1 ms 212 KB Output is correct
9 Correct 1 ms 212 KB Output is correct
10 Correct 1 ms 212 KB Output is correct
11 Correct 0 ms 212 KB Output is correct
12 Correct 7 ms 1364 KB Output is correct
13 Correct 157 ms 27852 KB Output is correct
14 Correct 1 ms 212 KB Output is correct
15 Correct 1 ms 212 KB Output is correct
16 Correct 4 ms 980 KB Output is correct
17 Correct 71 ms 18040 KB Output is correct
18 Correct 1 ms 212 KB Output is correct
19 Correct 1 ms 212 KB Output is correct
20 Correct 40 ms 7176 KB Output is correct
21 Correct 154 ms 27908 KB Output is correct
22 Correct 164 ms 27892 KB Output is correct
23 Correct 163 ms 27892 KB Output is correct
24 Correct 162 ms 27852 KB Output is correct
25 Correct 70 ms 18028 KB Output is correct
26 Correct 69 ms 18032 KB Output is correct
27 Correct 160 ms 27960 KB Output is correct
28 Correct 154 ms 27852 KB Output is correct

Subtask #3
0 / 19.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 212 KB Output is correct
2 Correct 1 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
35.0 / 35.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 212 KB Output is correct
2 Correct 1 ms 212 KB Output is correct
3 Correct 0 ms 212 KB Output is correct
4 Correct 40 ms 7244 KB Output is correct
5 Correct 158 ms 27852 KB Output is correct
6 Correct 157 ms 27944 KB Output is correct
7 Correct 160 ms 27984 KB Output is correct
8 Correct 1 ms 212 KB Output is correct
9 Correct 40 ms 7244 KB Output is correct
10 Correct 155 ms 27924 KB Output is correct
11 Correct 157 ms 27936 KB Output is correct
12 Correct 158 ms 27944 KB Output is correct
13 Correct 1 ms 212 KB Output is correct
14 Correct 0 ms 212 KB Output is correct
15 Correct 0 ms 212 KB Output is correct
16 Correct 40 ms 7244 KB Output is correct
17 Correct 167 ms 27948 KB Output is correct
18 Correct 155 ms 27904 KB Output is correct
19 Correct 160 ms 27888 KB Output is correct
20 Correct 154 ms 27900 KB Output is correct

Subtask #5
0 / 21.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 212 KB Output is correct
2 Correct 1 ms 212 KB Output is correct
3 Correct 0 ms 212 KB Output is correct
4 Correct 1 ms 212 KB Output is correct
5 Correct 1 ms 212 KB Output is correct
6 Correct 8 ms 1364 KB Output is correct
7 Correct 156 ms 27980 KB Output is correct
8 Correct 1 ms 212 KB Output is correct
9 Correct 1 ms 212 KB Output is correct
10 Correct 1 ms 212 KB Output is correct
11 Correct 0 ms 212 KB Output is correct
12 Correct 7 ms 1364 KB Output is correct
13 Correct 157 ms 27852 KB Output is correct
14 Correct 1 ms 212 KB Output is correct
15 Correct 1 ms 212 KB Output is correct
16 Correct 4 ms 980 KB Output is correct
17 Correct 71 ms 18040 KB Output is correct
18 Correct 1 ms 212 KB Output is correct
19 Correct 1 ms 212 KB Output is correct
20 Correct 40 ms 7176 KB Output is correct
21 Correct 154 ms 27908 KB Output is correct
22 Correct 164 ms 27892 KB Output is correct
23 Correct 163 ms 27892 KB Output is correct
24 Correct 162 ms 27852 KB Output is correct
25 Correct 70 ms 18028 KB Output is correct
26 Correct 69 ms 18032 KB Output is correct
27 Correct 160 ms 27960 KB Output is correct
28 Correct 154 ms 27852 KB Output is correct
29 Correct 1 ms 212 KB Output is correct
30 Correct 1 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 1 ms 212 KB Output is correct
2 Correct 1 ms 212 KB Output is correct
3 Correct 0 ms 212 KB Output is correct
4 Correct 1 ms 212 KB Output is correct
5 Correct 1 ms 212 KB Output is correct
6 Correct 8 ms 1364 KB Output is correct
7 Correct 156 ms 27980 KB Output is correct
8 Correct 1 ms 212 KB Output is correct
9 Correct 1 ms 212 KB Output is correct
10 Correct 1 ms 212 KB Output is correct
11 Correct 0 ms 212 KB Output is correct
12 Correct 7 ms 1364 KB Output is correct
13 Correct 157 ms 27852 KB Output is correct
14 Correct 1 ms 212 KB Output is correct
15 Correct 1 ms 212 KB Output is correct
16 Correct 4 ms 980 KB Output is correct
17 Correct 71 ms 18040 KB Output is correct
18 Correct 1 ms 212 KB Output is correct
19 Correct 1 ms 212 KB Output is correct
20 Correct 40 ms 7176 KB Output is correct
21 Correct 154 ms 27908 KB Output is correct
22 Correct 164 ms 27892 KB Output is correct
23 Correct 163 ms 27892 KB Output is correct
24 Correct 162 ms 27852 KB Output is correct
25 Correct 70 ms 18028 KB Output is correct
26 Correct 69 ms 18032 KB Output is correct
27 Correct 160 ms 27960 KB Output is correct
28 Correct 154 ms 27852 KB Output is correct
29 Correct 1 ms 212 KB Output is correct
30 Correct 1 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 -