oj.uz

Submission #977463

# Submission time Handle Problem Language Result Execution time Memory
977463 2024-05-08T02:57:06 Z Amaarsaa Connecting Supertrees (IOI20_supertrees) C++14
21 / 100
 179 ms 22380 KB 
#include<bits/stdc++.h>
#include "supertrees.h"
using namespace std;
vector < int > adj[1002];
int ataman[10002], used[1002], at[1002];
int Get(int x) {
	if ( x == ataman[x]) return x;
	return ataman[x] = Get(ataman[x]);
}
void Unite(int x, int y) {
	x = Get(x);
	y = Get(y);
	if (x == y) return ;
	if ( x < y) swap(x, y);
	ataman[x]= y;
}
int construct(vector<vector<int>> a) {
	int n = a.size(), i, j;
	vector < vector < int > > ans(n, vector<int>(n, 0));
	for (i = 0; i < n; i ++) ataman[i]= i;
	int s = 1;
	for ( i = 0; i < n; i++) {
		for ( j = 0; j < n; j ++) {
			if ( a[i][j] == 1 && i != j) Unite(i, j);
		}
	}
	for (i = 0; i < n; i ++) {
		for (j = 0; j < n; j ++) {
			if ( i == j) continue;
			if ( (a[i][j] == 0 || a[i][j] == 3) && Get(i) == Get(j)) s= 0;
			if ( a[i][j] == 1 && Get(i) != Get(j)) s = 0; 
		}
	}
	
	for (i = 0; i < n; i ++) {
		vector < int > v;
		v.push_back(i);
		for (j = i + 1; j < n; j ++) {
			if ( Get(j) == Get(i) && !used[j]) v.push_back(j);
		}
		used[i] = 1;
		for (j = 1; j < v.size(); j ++) {
			used[v[j]] = 1;
			ans[v[j]][v[j - 1]] = ans[v[j - 1]][v[j]] = 1;
		}
		
	}
	for (i = 0; i < n; i ++) at[i] = Get(i);
	for (i = 0; i < n; i ++) ataman[i] = i;
	for (i = 0; i < n; i ++) {
		for (j = 0; j < n; j ++) {
			if ( a[i][j] == 2 && i != j) Unite(i, j);
		}
	}
	for (i = 0; i < n; i ++) used[i] = 0;
	for (i = 0; i < n; i ++) {
		for (j = 0; j < n; j ++) {
			if ( i == j) continue;
			if ( (a[i][j] == 0 || a[i][j] == 3) && Get(i) == Get(j)) s= 0;
			if ( a[i][j] == 2 && Get(i) != Get(j)) s = 0; 
		}
	}
	
	for (i = 0; i < n; i ++) {
		vector < int > v;
		v.push_back(at[i]);
		for (j = i + 1; j < n; j ++) {
			if ( Get(j) == Get(i) && !used[j]) v.push_back(at[j]);
		}
		if(v.size() == 1) continue;
		used[i] = 1;
		for (j = 1; j < v.size(); j ++) {
			used[v[j]] = 1;
			ans[v[j]][v[j - 1]] = ans[v[j - 1]][v[j]] = 1;
		}
		ans[v[0]][v[v.size() -1]] = ans[v[v.size() -1]][v[0]] = 1;
		
	}
	if ( s == 0) return 0;
	build(ans);
	return s;
}
/*
vector < vector < int > > b;
inp() {
	int n, i, j, x;
	cin >>n;
	b.resize(n);
	for (i = 0; i < n; i ++) {
		for (j = 0; j < n; j ++) {
			cin >> x;
			b[i].push_back(x);
		}
	}
}
int main() {
	inp();
	cout << construct(b) << endl;
}
*/

Compilation message

supertrees.cpp: In function 'int construct(std::vector<std::vector<int> >)':
supertrees.cpp:42:17: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<int>::size_type' {aka 'long unsigned int'} [-Wsign-compare]
   42 |   for (j = 1; j < v.size(); j ++) {
      |               ~~^~~~~~~~~~
supertrees.cpp:72:17: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<int>::size_type' {aka 'long unsigned int'} [-Wsign-compare]
   72 |   for (j = 1; j < v.size(); j ++) {
      |               ~~^~~~~~~~~~

Subtask #1
11.0 / 11.0

# Verdict Execution time Memory Grader output
1 Correct 0 ms 344 KB Output is correct
2 Correct 0 ms 348 KB Output is correct
3 Correct 0 ms 348 KB Output is correct
4 Correct 0 ms 348 KB Output is correct
5 Correct 1 ms 348 KB Output is correct
6 Correct 7 ms 1116 KB Output is correct
7 Correct 179 ms 22052 KB Output is correct

Subtask #2
10.0 / 10.0

# Verdict Execution time Memory Grader output
1 Correct 0 ms 344 KB Output is correct
2 Correct 0 ms 348 KB Output is correct
3 Correct 0 ms 348 KB Output is correct
4 Correct 0 ms 348 KB Output is correct
5 Correct 1 ms 348 KB Output is correct
6 Correct 7 ms 1116 KB Output is correct
7 Correct 179 ms 22052 KB Output is correct
8 Correct 0 ms 344 KB Output is correct
9 Correct 0 ms 348 KB Output is correct
10 Correct 0 ms 348 KB Output is correct
11 Correct 1 ms 348 KB Output is correct
12 Correct 8 ms 1332 KB Output is correct
13 Correct 164 ms 22204 KB Output is correct
14 Correct 1 ms 348 KB Output is correct
15 Correct 0 ms 348 KB Output is correct
16 Correct 4 ms 860 KB Output is correct
17 Correct 92 ms 12068 KB Output is correct
18 Correct 1 ms 348 KB Output is correct
19 Correct 0 ms 348 KB Output is correct
20 Correct 42 ms 5716 KB Output is correct
21 Correct 167 ms 22064 KB Output is correct
22 Correct 166 ms 22148 KB Output is correct
23 Correct 168 ms 22064 KB Output is correct
24 Correct 166 ms 22100 KB Output is correct
25 Correct 78 ms 12080 KB Output is correct
26 Correct 77 ms 12080 KB Output is correct
27 Correct 170 ms 22064 KB Output is correct
28 Correct 165 ms 22020 KB Output is correct

Subtask #3
0 / 19.0

# 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 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 0 ms 348 KB Output is correct
4 Correct 42 ms 6076 KB Output is correct
5 Correct 168 ms 22032 KB Output is correct
6 Correct 177 ms 22204 KB Output is correct
7 Correct 168 ms 22040 KB Output is correct
8 Correct 0 ms 348 KB Output is correct
9 Correct 44 ms 5804 KB Output is correct
10 Correct 167 ms 22100 KB Output is correct
11 Correct 167 ms 22380 KB Output is correct
12 Correct 172 ms 22096 KB Output is correct
13 Correct 0 ms 348 KB Output is correct
14 Correct 0 ms 348 KB Output is correct
15 Incorrect 1 ms 348 KB Too few ways to get from 0 to 1, should be 2 found 1
16 Halted 0 ms 0 KB -

Subtask #5
0 / 21.0

# Verdict Execution time Memory Grader output
1 Correct 0 ms 344 KB Output is correct
2 Correct 0 ms 348 KB Output is correct
3 Correct 0 ms 348 KB Output is correct
4 Correct 0 ms 348 KB Output is correct
5 Correct 1 ms 348 KB Output is correct
6 Correct 7 ms 1116 KB Output is correct
7 Correct 179 ms 22052 KB Output is correct
8 Correct 0 ms 344 KB Output is correct
9 Correct 0 ms 348 KB Output is correct
10 Correct 0 ms 348 KB Output is correct
11 Correct 1 ms 348 KB Output is correct
12 Correct 8 ms 1332 KB Output is correct
13 Correct 164 ms 22204 KB Output is correct
14 Correct 1 ms 348 KB Output is correct
15 Correct 0 ms 348 KB Output is correct
16 Correct 4 ms 860 KB Output is correct
17 Correct 92 ms 12068 KB Output is correct
18 Correct 1 ms 348 KB Output is correct
19 Correct 0 ms 348 KB Output is correct
20 Correct 42 ms 5716 KB Output is correct
21 Correct 167 ms 22064 KB Output is correct
22 Correct 166 ms 22148 KB Output is correct
23 Correct 168 ms 22064 KB Output is correct
24 Correct 166 ms 22100 KB Output is correct
25 Correct 78 ms 12080 KB Output is correct
26 Correct 77 ms 12080 KB Output is correct
27 Correct 170 ms 22064 KB Output is correct
28 Correct 165 ms 22020 KB Output is correct
29 Correct 0 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 0 ms 344 KB Output is correct
2 Correct 0 ms 348 KB Output is correct
3 Correct 0 ms 348 KB Output is correct
4 Correct 0 ms 348 KB Output is correct
5 Correct 1 ms 348 KB Output is correct
6 Correct 7 ms 1116 KB Output is correct
7 Correct 179 ms 22052 KB Output is correct
8 Correct 0 ms 344 KB Output is correct
9 Correct 0 ms 348 KB Output is correct
10 Correct 0 ms 348 KB Output is correct
11 Correct 1 ms 348 KB Output is correct
12 Correct 8 ms 1332 KB Output is correct
13 Correct 164 ms 22204 KB Output is correct
14 Correct 1 ms 348 KB Output is correct
15 Correct 0 ms 348 KB Output is correct
16 Correct 4 ms 860 KB Output is correct
17 Correct 92 ms 12068 KB Output is correct
18 Correct 1 ms 348 KB Output is correct
19 Correct 0 ms 348 KB Output is correct
20 Correct 42 ms 5716 KB Output is correct
21 Correct 167 ms 22064 KB Output is correct
22 Correct 166 ms 22148 KB Output is correct
23 Correct 168 ms 22064 KB Output is correct
24 Correct 166 ms 22100 KB Output is correct
25 Correct 78 ms 12080 KB Output is correct
26 Correct 77 ms 12080 KB Output is correct
27 Correct 170 ms 22064 KB Output is correct
28 Correct 165 ms 22020 KB Output is correct
29 Correct 0 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 -