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Submission #1079157

# Submission time Handle Problem Language Result Execution time Memory
1079157 2024-08-28T11:23:35 Z 7mody Connecting Supertrees (IOI20_supertrees) C++17
0 / 100
 1 ms 348 KB 
#include "supertrees.h"
#include <bits/stdc++.h>
using namespace std;

int construct(vector<vector<int>> p) {
	int n = p.size();
	vector<vector<int>> answer;
	for (int i = 0; i < n; i++) {
		vector<int> row;
		row.resize(n);
		answer.push_back(row);
	}
	vector<int> arr;
	vector<bool> found(n);
	for(int i = 0; i < n;i++){
		if(p[i][i] != 1) return 0;
		for(int j = 0; j < n;j++){
			if(p[i][j] != p[j][i]) return 0;
			if(p[i][j] == 2){
				if(!found[i]){
					arr.push_back(i);
					found[i] = true;
				} if(!found[j]){
					arr.push_back(j);
					found[j] = true;
				}
			}
		}
	}
	if(arr.size()) arr.push_back(arr[0]);
	int m = int(arr.size());
	for(int i = 0; i < m - 1;i++){
		for(int j = 0; j < m - 1;j++){
			if(i==j) continue;
			if(p[arr[i]][arr[j]] != 2) return 0;
		}
	}

	for(int i = 0; i < int(arr.size()) - 1;i++){
		answer[arr[i]][arr[i+1]] = answer[arr[i+1]][arr[i]] = 1;
	}

	build(answer);
	return 1;
}

Subtask #1
0 / 11.0

# Verdict Execution time Memory Grader output
1 Correct 0 ms 344 KB Output is correct
2 Incorrect 1 ms 344 KB Too few ways to get from 0 to 1, should be 1 found 0
3 Halted 0 ms 0 KB -

Subtask #2
0 / 10.0

# Verdict Execution time Memory Grader output
1 Correct 0 ms 344 KB Output is correct
2 Incorrect 1 ms 344 KB Too few ways to get from 0 to 1, should be 1 found 0
3 Halted 0 ms 0 KB -

Subtask #3
0 / 19.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 348 KB Output is correct
2 Correct 1 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 Incorrect 0 ms 348 KB Too few ways to get from 1 to 2, should be 1 found 0
4 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 Incorrect 1 ms 344 KB Too few ways to get from 0 to 1, should be 1 found 0
3 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 Incorrect 1 ms 344 KB Too few ways to get from 0 to 1, should be 1 found 0
3 Halted 0 ms 0 KB -