oj.uz

Submission #733866

# Submission time Handle Problem Language Result Execution time Memory
733866 2023-05-01T11:22:21 Z ismayil Connecting Supertrees (IOI20_supertrees) C++17
19 / 100
 214 ms 22092 KB 
#include "supertrees.h"
#include <bits/stdc++.h>
using namespace std;
const int MAX = 1e3 + 3;
int par[MAX];
int find(int u){
	if(par[u] < 0) return u;
	return par[u] = find(par[u]);
}
bool unite(int u, int v){
	u = find(u), v = find(v);
	if(u == v) return false;
	if(par[u] > par[v]) swap(u, v);
	par[u] += par[v];
	par[v] = u;
	return true;
}
int construct(vector<vector<int>> p) 
{
	memset(par, -1, sizeof(par));
	int n = p.size();
	vector<vector<int>> answer(n, vector<int>(n, 0));
	int mark[n] = {0};
	for (int i = 0; i < n; i++){
		for(int j = 0; j < n; j++){
			if(p[i][j] == 2){
				unite(i, j);
			} 
		}
	}
	for (int i = 0; i < n; i++){
		for(int j = 0; j < n; j++){
			if(find(i) == find(j) && p[i][j] == 0) return 0;
		}
	}
	for(int i = 0; i < n; i++){
		if(mark[find(i)]) continue;
		mark[find(i)] = 1;
		vector<int> v;
		for(int j = 0; j < n; j++){
			if(find(i) != find(j) && p[i][j] != 0) return 0;
			if(find(i) == find(j) && p[i][j] == 0) return 0;
			if(find(i) == find(j)){
				v.push_back(j);
			}
		}
		if(v.size() == 1) continue;
		if(v.size() == 2) return 0;
		for(int j = 0; j < v.size() - 1; j++) answer[v[j]][v[j + 1]] = answer[v[j + 1]][v[j]] = 1;
		answer[v[v.size() - 1]][v[0]] = answer[v[0]][v[v.size() - 1]] = 1;
	}
	build(answer);
	return 1;
}

Compilation message

supertrees.cpp: In function 'int construct(std::vector<std::vector<int> >)':
supertrees.cpp:49:20: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<int>::size_type' {aka 'long unsigned int'} [-Wsign-compare]
   49 |   for(int j = 0; j < v.size() - 1; j++) answer[v[j]][v[j + 1]] = answer[v[j + 1]][v[j]] = 1;
      |                  ~~^~~~~~~~~~~~~~

Subtask #1
0 / 11.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 212 KB Output is correct
2 Incorrect 1 ms 212 KB Answer gives possible 0 while actual possible 1
3 Halted 0 ms 0 KB -

Subtask #2
0 / 10.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 212 KB Output is correct
2 Incorrect 1 ms 212 KB Answer gives possible 0 while actual possible 1
3 Halted 0 ms 0 KB -

Subtask #3
19.0 / 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 1 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 1 ms 212 KB Output is correct
7 Correct 0 ms 212 KB Output is correct
8 Correct 9 ms 1196 KB Output is correct
9 Correct 178 ms 21960 KB Output is correct
10 Correct 1 ms 212 KB Output is correct
11 Correct 0 ms 212 KB Output is correct
12 Correct 8 ms 1108 KB Output is correct
13 Correct 214 ms 21964 KB Output is correct
14 Correct 0 ms 212 KB Output is correct
15 Correct 1 ms 212 KB Output is correct
16 Correct 7 ms 724 KB Output is correct
17 Correct 90 ms 12108 KB Output is correct
18 Correct 0 ms 212 KB Output is correct
19 Correct 0 ms 212 KB Output is correct
20 Correct 0 ms 212 KB Output is correct
21 Correct 64 ms 5756 KB Output is correct
22 Correct 196 ms 22044 KB Output is correct
23 Correct 174 ms 21944 KB Output is correct
24 Correct 181 ms 22032 KB Output is correct
25 Correct 78 ms 12056 KB Output is correct
26 Correct 76 ms 12040 KB Output is correct
27 Correct 171 ms 22092 KB Output is correct
28 Correct 182 ms 22032 KB Output is correct
29 Correct 74 ms 12108 KB Output is correct

Subtask #4
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 Incorrect 1 ms 212 KB Answer gives possible 0 while actual possible 1
4 Halted 0 ms 0 KB -

Subtask #5
0 / 21.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 212 KB Output is correct
2 Incorrect 1 ms 212 KB Answer gives possible 0 while actual possible 1
3 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 Incorrect 1 ms 212 KB Answer gives possible 0 while actual possible 1
3 Halted 0 ms 0 KB -