oj.uz

Submission #440896

# Submission time Handle Problem Language Result Execution time Memory
440896 2021-07-03T12:54:29 Z roseanne_pcy Connecting Supertrees (IOI20_supertrees) C++14
96 / 100
 246 ms 22212 KB 
#pragma GCC optimize ("O3")
#pragma GCC target ("sse4")

#include <bits/stdc++.h>
#include "supertrees.h"

using namespace std;

typedef pair<int, int> ii;
typedef vector<int> vi;
typedef long long ll;

#define f first
#define s second
#define pb push_back
#define lb lower_bound
#define ub upper_bound
#define sz(x) (int)x.size()
#define all(x) begin(x), end(x)
#define rsz resize

const int md = 1e9+7;
const ll inf = 1e18;
const int maxn = 1e3+5;

template<class T> void ckmin(T &a, T b) { a = min(a, b); }
template<class T> void ckmax(T &a, T b) { a = max(a, b); }

vector<int> par;
vector<int> subpar;
vector< vector<int> > res;
vector<int> bucks[maxn];
vector<int> subbucks[maxn];

void init(vector<int> &p)
{
	for(int i = 0; i< (int) p.size(); i++) p[i] = i;
}

int findset(vector<int> &p, int x)
{
	if(p[x] == x) return x;
	return p[x] = findset(p, p[x]);
}

void unionset(vector<int> &p, int x, int y)
{
	int a = findset(p, x);
	int b = findset(p, y);
	if(a == b) return;
	p[a] = b;
}

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

int construct(std::vector<std::vector<int>> p) 
{
	int n = p.size();

	par = vector<int>(n, 0);
	subpar = vector<int>(n, 0);
	res.assign(n, vector<int>(n, 0));

	init(par); init(subpar);

	bool good = true;

	for(int i = 0; i< n; i++)
	{
		for(int j = i+1; j< n; j++)
		{
			if(p[i][j] > 0)
			{
				unionset(par, i, j);
			}
		}
	}

	for(int i = 0; i< n; i++)
	{
		for(int j = i+1; j< n; j++)
		{
			if(p[i][j] == 0)
			{
				if(findset(par, i) == findset(par, j))
				{
					return 0;
				}
			}
		}
	}

	for(int i = 0; i< n; i++)
	{
		for(int j = i+1; j< n; j++)
		{
			if(p[i][j] == 1)
			{
				unionset(subpar, i, j);
			}
		}
	}

	for(int i = 0; i< n; i++)
	{
		for(int j = i+1; j< n; j++)
		{
			if(p[i][j] >= 2)
			{
				if(findset(subpar, i) == findset(subpar, j))
				{
					return 0;
				}
			}
		}
	}

	for(int i = 0; i< n; i++)
	{
		if(findset(subpar, i) != i)
		{
			addedge(findset(subpar, i), i);
		}
		else bucks[findset(par, i)].pb(i);

		subbucks[findset(subpar, i)].pb(i);
	}

	for(int i = 0; i< n; i++)
	{
		if((int) bucks[i].size() <= 1) continue;
		if((int) bucks[i].size() == 2) return 0;

		int val = -1;

		for(int j = 0; j< (int) bucks[i].size(); j++)
		{
			for(int k = j+1; k< (int) bucks[i].size(); k++)
			{
				int u = bucks[i][j], v = bucks[i][k];
				for(int su : subbucks[u])
				{
					for(int sj : subbucks[v])
					{
						if(val == -1) val = p[u][v];
						else if(val != p[u][v]) return 0;
					}
				}
			}
		}

		for(int j = 0; j+1< (int) bucks[i].size(); j++)
		{
			addedge(bucks[i][j], bucks[i][j+1]);
		}
		addedge(bucks[i][0], bucks[i].back());
		if(val == 3 && bucks[i].size() == 3) return 0;
		if(val == 3) addedge(bucks[i][0], bucks[i][2]);
	}

	build(res);
	return 1;
}

Compilation message

supertrees.cpp: In function 'int construct(std::vector<std::vector<int> >)':
supertrees.cpp:146:14: warning: unused variable 'sj' [-Wunused-variable]
  146 |      for(int sj : subbucks[v])
      |              ^~
supertrees.cpp:144:13: warning: unused variable 'su' [-Wunused-variable]
  144 |     for(int su : subbucks[u])
      |             ^~
supertrees.cpp:69:7: warning: unused variable 'good' [-Wunused-variable]
   69 |  bool good = true;
      |       ^~~~

Subtask #1
11.0 / 11.0

# Verdict Execution time Memory Grader output
1 Correct 0 ms 332 KB Output is correct
2 Correct 0 ms 332 KB Output is correct
3 Correct 0 ms 332 KB Output is correct
4 Correct 0 ms 332 KB Output is correct
5 Correct 0 ms 332 KB Output is correct
6 Correct 9 ms 1140 KB Output is correct
7 Correct 226 ms 22004 KB Output is correct

Subtask #2
10.0 / 10.0

# Verdict Execution time Memory Grader output
1 Correct 0 ms 332 KB Output is correct
2 Correct 0 ms 332 KB Output is correct
3 Correct 0 ms 332 KB Output is correct
4 Correct 0 ms 332 KB Output is correct
5 Correct 0 ms 332 KB Output is correct
6 Correct 9 ms 1140 KB Output is correct
7 Correct 226 ms 22004 KB Output is correct
8 Correct 0 ms 332 KB Output is correct
9 Correct 1 ms 332 KB Output is correct
10 Correct 0 ms 332 KB Output is correct
11 Correct 0 ms 332 KB Output is correct
12 Correct 9 ms 1228 KB Output is correct
13 Correct 224 ms 22060 KB Output is correct
14 Correct 1 ms 332 KB Output is correct
15 Correct 0 ms 332 KB Output is correct
16 Correct 6 ms 716 KB Output is correct
17 Correct 99 ms 12100 KB Output is correct
18 Correct 0 ms 332 KB Output is correct
19 Correct 1 ms 332 KB Output is correct
20 Correct 57 ms 5804 KB Output is correct
21 Correct 229 ms 22084 KB Output is correct
22 Correct 230 ms 22068 KB Output is correct
23 Correct 231 ms 22084 KB Output is correct
24 Correct 223 ms 22108 KB Output is correct
25 Correct 108 ms 12084 KB Output is correct
26 Correct 91 ms 12088 KB Output is correct
27 Correct 234 ms 22064 KB Output is correct
28 Correct 221 ms 22148 KB Output is correct

Subtask #3
19.0 / 19.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 332 KB Output is correct
2 Correct 0 ms 332 KB Output is correct
3 Correct 0 ms 332 KB Output is correct
4 Correct 0 ms 332 KB Output is correct
5 Correct 0 ms 332 KB Output is correct
6 Correct 1 ms 332 KB Output is correct
7 Correct 1 ms 332 KB Output is correct
8 Correct 10 ms 1140 KB Output is correct
9 Correct 224 ms 22052 KB Output is correct
10 Correct 0 ms 332 KB Output is correct
11 Correct 1 ms 332 KB Output is correct
12 Correct 10 ms 1180 KB Output is correct
13 Correct 246 ms 22196 KB Output is correct
14 Correct 0 ms 332 KB Output is correct
15 Correct 0 ms 332 KB Output is correct
16 Correct 4 ms 716 KB Output is correct
17 Correct 100 ms 12100 KB Output is correct
18 Correct 0 ms 332 KB Output is correct
19 Correct 0 ms 332 KB Output is correct
20 Correct 1 ms 332 KB Output is correct
21 Correct 56 ms 5828 KB Output is correct
22 Correct 235 ms 22072 KB Output is correct
23 Correct 223 ms 22084 KB Output is correct
24 Correct 236 ms 22084 KB Output is correct
25 Correct 98 ms 12216 KB Output is correct
26 Correct 93 ms 12076 KB Output is correct
27 Correct 238 ms 22060 KB Output is correct
28 Correct 246 ms 22084 KB Output is correct
29 Correct 99 ms 12200 KB Output is correct

Subtask #4
35.0 / 35.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 332 KB Output is correct
2 Correct 0 ms 332 KB Output is correct
3 Correct 1 ms 332 KB Output is correct
4 Correct 57 ms 5736 KB Output is correct
5 Correct 228 ms 22016 KB Output is correct
6 Correct 229 ms 22084 KB Output is correct
7 Correct 240 ms 22056 KB Output is correct
8 Correct 1 ms 332 KB Output is correct
9 Correct 60 ms 5804 KB Output is correct
10 Correct 233 ms 22068 KB Output is correct
11 Correct 230 ms 22084 KB Output is correct
12 Correct 234 ms 22056 KB Output is correct
13 Correct 1 ms 332 KB Output is correct
14 Correct 0 ms 332 KB Output is correct
15 Correct 0 ms 332 KB Output is correct
16 Correct 58 ms 5796 KB Output is correct
17 Correct 231 ms 22068 KB Output is correct
18 Correct 228 ms 22212 KB Output is correct
19 Correct 224 ms 22084 KB Output is correct
20 Correct 224 ms 22084 KB Output is correct

Subtask #5
21.0 / 21.0

# Verdict Execution time Memory Grader output
1 Correct 0 ms 332 KB Output is correct
2 Correct 0 ms 332 KB Output is correct
3 Correct 0 ms 332 KB Output is correct
4 Correct 0 ms 332 KB Output is correct
5 Correct 0 ms 332 KB Output is correct
6 Correct 9 ms 1140 KB Output is correct
7 Correct 226 ms 22004 KB Output is correct
8 Correct 0 ms 332 KB Output is correct
9 Correct 1 ms 332 KB Output is correct
10 Correct 0 ms 332 KB Output is correct
11 Correct 0 ms 332 KB Output is correct
12 Correct 9 ms 1228 KB Output is correct
13 Correct 224 ms 22060 KB Output is correct
14 Correct 1 ms 332 KB Output is correct
15 Correct 0 ms 332 KB Output is correct
16 Correct 6 ms 716 KB Output is correct
17 Correct 99 ms 12100 KB Output is correct
18 Correct 0 ms 332 KB Output is correct
19 Correct 1 ms 332 KB Output is correct
20 Correct 57 ms 5804 KB Output is correct
21 Correct 229 ms 22084 KB Output is correct
22 Correct 230 ms 22068 KB Output is correct
23 Correct 231 ms 22084 KB Output is correct
24 Correct 223 ms 22108 KB Output is correct
25 Correct 108 ms 12084 KB Output is correct
26 Correct 91 ms 12088 KB Output is correct
27 Correct 234 ms 22064 KB Output is correct
28 Correct 221 ms 22148 KB Output is correct
29 Correct 1 ms 332 KB Output is correct
30 Correct 0 ms 332 KB Output is correct
31 Correct 0 ms 332 KB Output is correct
32 Correct 0 ms 332 KB Output is correct
33 Correct 0 ms 332 KB Output is correct
34 Correct 1 ms 332 KB Output is correct
35 Correct 1 ms 332 KB Output is correct
36 Correct 10 ms 1140 KB Output is correct
37 Correct 224 ms 22052 KB Output is correct
38 Correct 0 ms 332 KB Output is correct
39 Correct 1 ms 332 KB Output is correct
40 Correct 10 ms 1180 KB Output is correct
41 Correct 246 ms 22196 KB Output is correct
42 Correct 0 ms 332 KB Output is correct
43 Correct 0 ms 332 KB Output is correct
44 Correct 4 ms 716 KB Output is correct
45 Correct 100 ms 12100 KB Output is correct
46 Correct 0 ms 332 KB Output is correct
47 Correct 0 ms 332 KB Output is correct
48 Correct 1 ms 332 KB Output is correct
49 Correct 56 ms 5828 KB Output is correct
50 Correct 235 ms 22072 KB Output is correct
51 Correct 223 ms 22084 KB Output is correct
52 Correct 236 ms 22084 KB Output is correct
53 Correct 98 ms 12216 KB Output is correct
54 Correct 93 ms 12076 KB Output is correct
55 Correct 238 ms 22060 KB Output is correct
56 Correct 246 ms 22084 KB Output is correct
57 Correct 99 ms 12200 KB Output is correct
58 Correct 0 ms 332 KB Output is correct
59 Correct 0 ms 332 KB Output is correct
60 Correct 4 ms 756 KB Output is correct
61 Correct 99 ms 12072 KB Output is correct
62 Correct 0 ms 332 KB Output is correct
63 Correct 0 ms 332 KB Output is correct
64 Correct 1 ms 332 KB Output is correct
65 Correct 56 ms 5808 KB Output is correct
66 Correct 91 ms 12084 KB Output is correct
67 Correct 92 ms 12088 KB Output is correct
68 Correct 90 ms 12072 KB Output is correct
69 Correct 92 ms 12212 KB Output is correct

Subtask #6
0 / 4.0

# Verdict Execution time Memory Grader output
1 Correct 0 ms 332 KB Output is correct
2 Correct 0 ms 332 KB Output is correct
3 Correct 0 ms 332 KB Output is correct
4 Correct 0 ms 332 KB Output is correct
5 Correct 0 ms 332 KB Output is correct
6 Correct 9 ms 1140 KB Output is correct
7 Correct 226 ms 22004 KB Output is correct
8 Correct 0 ms 332 KB Output is correct
9 Correct 1 ms 332 KB Output is correct
10 Correct 0 ms 332 KB Output is correct
11 Correct 0 ms 332 KB Output is correct
12 Correct 9 ms 1228 KB Output is correct
13 Correct 224 ms 22060 KB Output is correct
14 Correct 1 ms 332 KB Output is correct
15 Correct 0 ms 332 KB Output is correct
16 Correct 6 ms 716 KB Output is correct
17 Correct 99 ms 12100 KB Output is correct
18 Correct 0 ms 332 KB Output is correct
19 Correct 1 ms 332 KB Output is correct
20 Correct 57 ms 5804 KB Output is correct
21 Correct 229 ms 22084 KB Output is correct
22 Correct 230 ms 22068 KB Output is correct
23 Correct 231 ms 22084 KB Output is correct
24 Correct 223 ms 22108 KB Output is correct
25 Correct 108 ms 12084 KB Output is correct
26 Correct 91 ms 12088 KB Output is correct
27 Correct 234 ms 22064 KB Output is correct
28 Correct 221 ms 22148 KB Output is correct
29 Correct 1 ms 332 KB Output is correct
30 Correct 0 ms 332 KB Output is correct
31 Correct 0 ms 332 KB Output is correct
32 Correct 0 ms 332 KB Output is correct
33 Correct 0 ms 332 KB Output is correct
34 Correct 1 ms 332 KB Output is correct
35 Correct 1 ms 332 KB Output is correct
36 Correct 10 ms 1140 KB Output is correct
37 Correct 224 ms 22052 KB Output is correct
38 Correct 0 ms 332 KB Output is correct
39 Correct 1 ms 332 KB Output is correct
40 Correct 10 ms 1180 KB Output is correct
41 Correct 246 ms 22196 KB Output is correct
42 Correct 0 ms 332 KB Output is correct
43 Correct 0 ms 332 KB Output is correct
44 Correct 4 ms 716 KB Output is correct
45 Correct 100 ms 12100 KB Output is correct
46 Correct 0 ms 332 KB Output is correct
47 Correct 0 ms 332 KB Output is correct
48 Correct 1 ms 332 KB Output is correct
49 Correct 56 ms 5828 KB Output is correct
50 Correct 235 ms 22072 KB Output is correct
51 Correct 223 ms 22084 KB Output is correct
52 Correct 236 ms 22084 KB Output is correct
53 Correct 98 ms 12216 KB Output is correct
54 Correct 93 ms 12076 KB Output is correct
55 Correct 238 ms 22060 KB Output is correct
56 Correct 246 ms 22084 KB Output is correct
57 Correct 99 ms 12200 KB Output is correct
58 Correct 1 ms 332 KB Output is correct
59 Correct 0 ms 332 KB Output is correct
60 Correct 1 ms 332 KB Output is correct
61 Correct 57 ms 5736 KB Output is correct
62 Correct 228 ms 22016 KB Output is correct
63 Correct 229 ms 22084 KB Output is correct
64 Correct 240 ms 22056 KB Output is correct
65 Correct 1 ms 332 KB Output is correct
66 Correct 60 ms 5804 KB Output is correct
67 Correct 233 ms 22068 KB Output is correct
68 Correct 230 ms 22084 KB Output is correct
69 Correct 234 ms 22056 KB Output is correct
70 Correct 1 ms 332 KB Output is correct
71 Correct 0 ms 332 KB Output is correct
72 Correct 0 ms 332 KB Output is correct
73 Correct 58 ms 5796 KB Output is correct
74 Correct 231 ms 22068 KB Output is correct
75 Correct 228 ms 22212 KB Output is correct
76 Correct 224 ms 22084 KB Output is correct
77 Correct 224 ms 22084 KB Output is correct
78 Correct 0 ms 332 KB Output is correct
79 Correct 0 ms 332 KB Output is correct
80 Correct 4 ms 756 KB Output is correct
81 Correct 99 ms 12072 KB Output is correct
82 Correct 0 ms 332 KB Output is correct
83 Correct 0 ms 332 KB Output is correct
84 Correct 1 ms 332 KB Output is correct
85 Correct 56 ms 5808 KB Output is correct
86 Correct 91 ms 12084 KB Output is correct
87 Correct 92 ms 12088 KB Output is correct
88 Correct 90 ms 12072 KB Output is correct
89 Correct 92 ms 12212 KB Output is correct
90 Correct 0 ms 332 KB Output is correct
91 Correct 0 ms 332 KB Output is correct
92 Correct 4 ms 752 KB Output is correct
93 Correct 97 ms 12072 KB Output is correct
94 Correct 1 ms 332 KB Output is correct
95 Correct 0 ms 332 KB Output is correct
96 Correct 0 ms 332 KB Output is correct
97 Correct 23 ms 3276 KB Output is correct
98 Correct 91 ms 12084 KB Output is correct
99 Correct 91 ms 12088 KB Output is correct
100 Correct 90 ms 12076 KB Output is correct
101 Correct 92 ms 12228 KB Output is correct
102 Incorrect 234 ms 22152 KB Answer gives possible 1 while actual possible 0
103 Halted 0 ms 0 KB -