oj.uz

Submission #366766

# Submission time Handle Problem Language Result Execution time Memory
366766 2021-02-15T09:28:12 Z SlavicG Connecting Supertrees (IOI20_supertrees) C++17
40 / 100
 295 ms 26348 KB 
#include "supertrees.h"
#include "bits/stdc++.h"
 
using namespace std;
 
#define              ll              long long
 
#define       forn(i,n)              for(int i=0;i<n;i++)
#define          all(v)              v.begin(), v.end()
#define         rall(v)              v.rbegin(),v.rend()
 
#define            pb                push_back
#define          sz(a)               (int)a.size()
#define         fastio               ios_base::sync_with_stdio(false);cin.tie(0);cout.tie(0);
 
const int N = 1001;
vector<int> adj[N];
bool vis[N];
set<int> n2;
bool two_cur;
vector<int> component;
 
int par[N];
int get(int a){
	while(par[a]!=a)a=par[a];
	return a;
}
void uni(int a,int b){
	a = get(a);
	b = get(b);
	if(a==b)return;
	par[b] = a;
}
void dfs(int u)
{
	vis[u] = true;
	if(n2.count(u))two_cur = true;
	component.pb(u);
	for(auto x : adj[u]){
		if(!vis[x])dfs(x);
	}
}
int construct(vector<vector<int>> p)
{
	int n = sz(p);
	vector<vector<int>> ans;
	ans.resize(n);
	for(int i=0;i < n;i++)
		par[i]=i;
	for(int i =0;i < n;i++)ans[i].resize(n);
	forn(i,n)forn(j,n)ans[i][j]=0;
	bool two = false;
	bool one = false;
	for(int i = 0;i < n;i++)
	{
		for(int j = 0;j < n;j++)
		{
			if(p[i][j]==2)two=true;
			if(p[i][j] == 1)one = true;
			if(p[i][j]){
				uni(i,j);
				adj[i].pb(j);
			}
		}
	}
	for(int i = 0;i < n;i++)
	{
		for(int j =0;j < n;j++)
		{
			if(get(i)==get(j) && !p[i][j])return 0;
		}
	}
	for(int i = 0;i < n;i++)
	{
		for(int j = 0;j < n;j++)
		{
			if(p[i][j] == 2)n2.insert(i);
		}
	}
	for(int i = 0;i < n;i++)
	{
		if(!vis[i]){
			component.clear();
			two_cur = false;
			dfs(i);
			if(sz(component) == 2 && two_cur)return 0;
			for(int j = 1;j < sz(component);j++)
			{
				ans[component[j]][component[j-1]] = ans[component[j-1]][component[j]] = 1; 
			}
			if(two_cur && sz(component) > 1)ans[component.back()][component[0]] = ans[component[0]][component.back()] = 1;
		}
	}
	build(ans);
	return 1;
}

Compilation message

supertrees.cpp: In function 'int construct(std::vector<std::vector<int> >)':
supertrees.cpp:52:7: warning: variable 'two' set but not used [-Wunused-but-set-variable]
   52 |  bool two = false;
      |       ^~~
supertrees.cpp:53:7: warning: variable 'one' set but not used [-Wunused-but-set-variable]
   53 |  bool one = false;
      |       ^~~

Subtask #1
11.0 / 11.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 364 KB Output is correct
2 Correct 1 ms 364 KB Output is correct
3 Correct 1 ms 364 KB Output is correct
4 Correct 1 ms 364 KB Output is correct
5 Correct 1 ms 364 KB Output is correct
6 Correct 11 ms 1388 KB Output is correct
7 Correct 263 ms 26348 KB Output is correct

Subtask #2
10.0 / 10.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 364 KB Output is correct
2 Correct 1 ms 364 KB Output is correct
3 Correct 1 ms 364 KB Output is correct
4 Correct 1 ms 364 KB Output is correct
5 Correct 1 ms 364 KB Output is correct
6 Correct 11 ms 1388 KB Output is correct
7 Correct 263 ms 26348 KB Output is correct
8 Correct 1 ms 364 KB Output is correct
9 Correct 1 ms 364 KB Output is correct
10 Correct 1 ms 364 KB Output is correct
11 Correct 1 ms 364 KB Output is correct
12 Correct 11 ms 1260 KB Output is correct
13 Correct 248 ms 22140 KB Output is correct
14 Correct 1 ms 364 KB Output is correct
15 Correct 1 ms 364 KB Output is correct
16 Correct 6 ms 876 KB Output is correct
17 Correct 129 ms 14700 KB Output is correct
18 Correct 1 ms 364 KB Output is correct
19 Correct 1 ms 364 KB Output is correct
20 Correct 63 ms 5868 KB Output is correct
21 Correct 293 ms 22636 KB Output is correct
22 Correct 254 ms 22380 KB Output is correct
23 Correct 295 ms 24172 KB Output is correct
24 Correct 251 ms 22124 KB Output is correct
25 Correct 131 ms 12760 KB Output is correct
26 Correct 110 ms 12268 KB Output is correct
27 Correct 289 ms 25324 KB Output is correct
28 Correct 271 ms 22248 KB Output is correct

Subtask #3
19.0 / 19.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 364 KB Output is correct
2 Correct 1 ms 364 KB Output is correct
3 Correct 1 ms 364 KB Output is correct
4 Correct 1 ms 364 KB Output is correct
5 Correct 1 ms 364 KB Output is correct
6 Correct 1 ms 364 KB Output is correct
7 Correct 1 ms 364 KB Output is correct
8 Correct 10 ms 1260 KB Output is correct
9 Correct 259 ms 22252 KB Output is correct
10 Correct 1 ms 364 KB Output is correct
11 Correct 1 ms 512 KB Output is correct
12 Correct 11 ms 1516 KB Output is correct
13 Correct 271 ms 26348 KB Output is correct
14 Correct 1 ms 364 KB Output is correct
15 Correct 1 ms 364 KB Output is correct
16 Correct 6 ms 1004 KB Output is correct
17 Correct 126 ms 14700 KB Output is correct
18 Correct 1 ms 396 KB Output is correct
19 Correct 1 ms 364 KB Output is correct
20 Correct 1 ms 364 KB Output is correct
21 Correct 65 ms 5996 KB Output is correct
22 Correct 253 ms 22764 KB Output is correct
23 Correct 252 ms 22380 KB Output is correct
24 Correct 285 ms 25324 KB Output is correct
25 Correct 109 ms 12396 KB Output is correct
26 Correct 108 ms 12908 KB Output is correct
27 Correct 248 ms 22380 KB Output is correct
28 Correct 289 ms 24580 KB Output is correct
29 Correct 113 ms 12268 KB Output is correct

Subtask #4
0 / 35.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 364 KB Output is correct
2 Correct 1 ms 364 KB Output is correct
3 Correct 1 ms 364 KB Output is correct
4 Correct 63 ms 5996 KB Output is correct
5 Correct 249 ms 22764 KB Output is correct
6 Correct 244 ms 22252 KB Output is correct
7 Correct 284 ms 24332 KB Output is correct
8 Correct 1 ms 492 KB Output is correct
9 Correct 64 ms 5996 KB Output is correct
10 Correct 282 ms 22764 KB Output is correct
11 Correct 247 ms 22360 KB Output is correct
12 Correct 283 ms 25536 KB Output is correct
13 Correct 1 ms 364 KB Output is correct
14 Correct 1 ms 364 KB Output is correct
15 Incorrect 1 ms 364 KB Too many ways to get from 0 to 4, should be 1 found no less than 2
16 Halted 0 ms 0 KB -

Subtask #5
0 / 21.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 364 KB Output is correct
2 Correct 1 ms 364 KB Output is correct
3 Correct 1 ms 364 KB Output is correct
4 Correct 1 ms 364 KB Output is correct
5 Correct 1 ms 364 KB Output is correct
6 Correct 11 ms 1388 KB Output is correct
7 Correct 263 ms 26348 KB Output is correct
8 Correct 1 ms 364 KB Output is correct
9 Correct 1 ms 364 KB Output is correct
10 Correct 1 ms 364 KB Output is correct
11 Correct 1 ms 364 KB Output is correct
12 Correct 11 ms 1260 KB Output is correct
13 Correct 248 ms 22140 KB Output is correct
14 Correct 1 ms 364 KB Output is correct
15 Correct 1 ms 364 KB Output is correct
16 Correct 6 ms 876 KB Output is correct
17 Correct 129 ms 14700 KB Output is correct
18 Correct 1 ms 364 KB Output is correct
19 Correct 1 ms 364 KB Output is correct
20 Correct 63 ms 5868 KB Output is correct
21 Correct 293 ms 22636 KB Output is correct
22 Correct 254 ms 22380 KB Output is correct
23 Correct 295 ms 24172 KB Output is correct
24 Correct 251 ms 22124 KB Output is correct
25 Correct 131 ms 12760 KB Output is correct
26 Correct 110 ms 12268 KB Output is correct
27 Correct 289 ms 25324 KB Output is correct
28 Correct 271 ms 22248 KB Output is correct
29 Correct 1 ms 364 KB Output is correct
30 Correct 1 ms 364 KB Output is correct
31 Correct 1 ms 364 KB Output is correct
32 Correct 1 ms 364 KB Output is correct
33 Correct 1 ms 364 KB Output is correct
34 Correct 1 ms 364 KB Output is correct
35 Correct 1 ms 364 KB Output is correct
36 Correct 10 ms 1260 KB Output is correct
37 Correct 259 ms 22252 KB Output is correct
38 Correct 1 ms 364 KB Output is correct
39 Correct 1 ms 512 KB Output is correct
40 Correct 11 ms 1516 KB Output is correct
41 Correct 271 ms 26348 KB Output is correct
42 Correct 1 ms 364 KB Output is correct
43 Correct 1 ms 364 KB Output is correct
44 Correct 6 ms 1004 KB Output is correct
45 Correct 126 ms 14700 KB Output is correct
46 Correct 1 ms 396 KB Output is correct
47 Correct 1 ms 364 KB Output is correct
48 Correct 1 ms 364 KB Output is correct
49 Correct 65 ms 5996 KB Output is correct
50 Correct 253 ms 22764 KB Output is correct
51 Correct 252 ms 22380 KB Output is correct
52 Correct 285 ms 25324 KB Output is correct
53 Correct 109 ms 12396 KB Output is correct
54 Correct 108 ms 12908 KB Output is correct
55 Correct 248 ms 22380 KB Output is correct
56 Correct 289 ms 24580 KB Output is correct
57 Correct 113 ms 12268 KB Output is correct
58 Correct 1 ms 364 KB Output is correct
59 Correct 1 ms 364 KB Output is correct
60 Correct 6 ms 1260 KB Output is correct
61 Correct 130 ms 16364 KB Output is correct
62 Correct 1 ms 364 KB Output is correct
63 Correct 1 ms 512 KB Output is correct
64 Correct 1 ms 364 KB Output is correct
65 Incorrect 72 ms 6056 KB Too many ways to get from 1 to 269, should be 1 found no less than 2
66 Halted 0 ms 0 KB -

Subtask #6
0 / 4.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 364 KB Output is correct
2 Correct 1 ms 364 KB Output is correct
3 Correct 1 ms 364 KB Output is correct
4 Correct 1 ms 364 KB Output is correct
5 Correct 1 ms 364 KB Output is correct
6 Correct 11 ms 1388 KB Output is correct
7 Correct 263 ms 26348 KB Output is correct
8 Correct 1 ms 364 KB Output is correct
9 Correct 1 ms 364 KB Output is correct
10 Correct 1 ms 364 KB Output is correct
11 Correct 1 ms 364 KB Output is correct
12 Correct 11 ms 1260 KB Output is correct
13 Correct 248 ms 22140 KB Output is correct
14 Correct 1 ms 364 KB Output is correct
15 Correct 1 ms 364 KB Output is correct
16 Correct 6 ms 876 KB Output is correct
17 Correct 129 ms 14700 KB Output is correct
18 Correct 1 ms 364 KB Output is correct
19 Correct 1 ms 364 KB Output is correct
20 Correct 63 ms 5868 KB Output is correct
21 Correct 293 ms 22636 KB Output is correct
22 Correct 254 ms 22380 KB Output is correct
23 Correct 295 ms 24172 KB Output is correct
24 Correct 251 ms 22124 KB Output is correct
25 Correct 131 ms 12760 KB Output is correct
26 Correct 110 ms 12268 KB Output is correct
27 Correct 289 ms 25324 KB Output is correct
28 Correct 271 ms 22248 KB Output is correct
29 Correct 1 ms 364 KB Output is correct
30 Correct 1 ms 364 KB Output is correct
31 Correct 1 ms 364 KB Output is correct
32 Correct 1 ms 364 KB Output is correct
33 Correct 1 ms 364 KB Output is correct
34 Correct 1 ms 364 KB Output is correct
35 Correct 1 ms 364 KB Output is correct
36 Correct 10 ms 1260 KB Output is correct
37 Correct 259 ms 22252 KB Output is correct
38 Correct 1 ms 364 KB Output is correct
39 Correct 1 ms 512 KB Output is correct
40 Correct 11 ms 1516 KB Output is correct
41 Correct 271 ms 26348 KB Output is correct
42 Correct 1 ms 364 KB Output is correct
43 Correct 1 ms 364 KB Output is correct
44 Correct 6 ms 1004 KB Output is correct
45 Correct 126 ms 14700 KB Output is correct
46 Correct 1 ms 396 KB Output is correct
47 Correct 1 ms 364 KB Output is correct
48 Correct 1 ms 364 KB Output is correct
49 Correct 65 ms 5996 KB Output is correct
50 Correct 253 ms 22764 KB Output is correct
51 Correct 252 ms 22380 KB Output is correct
52 Correct 285 ms 25324 KB Output is correct
53 Correct 109 ms 12396 KB Output is correct
54 Correct 108 ms 12908 KB Output is correct
55 Correct 248 ms 22380 KB Output is correct
56 Correct 289 ms 24580 KB Output is correct
57 Correct 113 ms 12268 KB Output is correct
58 Correct 1 ms 364 KB Output is correct
59 Correct 1 ms 364 KB Output is correct
60 Correct 1 ms 364 KB Output is correct
61 Correct 63 ms 5996 KB Output is correct
62 Correct 249 ms 22764 KB Output is correct
63 Correct 244 ms 22252 KB Output is correct
64 Correct 284 ms 24332 KB Output is correct
65 Correct 1 ms 492 KB Output is correct
66 Correct 64 ms 5996 KB Output is correct
67 Correct 282 ms 22764 KB Output is correct
68 Correct 247 ms 22360 KB Output is correct
69 Correct 283 ms 25536 KB Output is correct
70 Correct 1 ms 364 KB Output is correct
71 Correct 1 ms 364 KB Output is correct
72 Incorrect 1 ms 364 KB Too many ways to get from 0 to 4, should be 1 found no less than 2
73 Halted 0 ms 0 KB -