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Submission #780966

# Submission time Handle Problem Language Result Execution time Memory
780966 2023-07-12T15:09:33 Z Malix Connecting Supertrees (IOI20_supertrees) C++14
40 / 100
 322 ms 24048 KB 
#include "supertrees.h"
#include <vector>
#include <bits/stdc++.h>

using namespace std;

int construct(std::vector<std::vector<int>> p) {
	int n = p.size();
	std::vector<std::vector<int>> answer;
	for (int i = 0; i < n; i++) {
		std::vector<int> row;
		row.resize(n);
		answer.push_back(row);
	}

	if(n==1){
		answer[0][0] = 0;
		build(answer);
		return 1;
	}

	int count = 0;
	int zerocount = 0;
	for(int i = 0; i < n; i++){
		for(int j = 0; j < n; j++){
			if(p[i][j] == 1){
				count++;
			}
			else if(p[i][j] == 0){
				zerocount++;
			}
		}
	}


	if(zerocount == (n*n)-n){
		for(int i = 0; i < n; i++){
			for(int j = 0; j < n; j++){
				answer[i][j] = 0;
			}
		}
		build(answer);
		return 1;
	}

	//subtask 1
	if(count == n*n){
		for(int i = 0; i < n; i++){
			for(int j = 0; j < n; j++){
				answer[i][j] = 0;
			}
		}
		for(int i = 1; i < n; i++){
			answer[i][0] = 1;
			answer[0][i] = 1;
		}
		build(answer);
		return 1;
	}

	//subtask 2
	count = 0;
	for(int i = 0; i < n; i++){
		for(int j = 0; j < n; j++){
			if(p[i][j] <= 1){
				count++;
			}
		}
	}
	if(count == n*n){

		vector<int> arr(n, 0);
		vector<int> arr2;
		int arr2size;

		for(int i = 0; i < n; i++){
			for(int j = 0; j < n; j++){
				answer[i][j] = 0;
			}
		}

		int currentIndex = 0;

		while(currentIndex != n){

			if(!arr[currentIndex]){
				arr2.push_back(currentIndex);
				for(int i = 0; i < n; i++){
					if(p[currentIndex][i]){
						if(arr[i]){
							return 0;
						}
						answer[currentIndex][i] = 1;
						answer[i][currentIndex] = 1;
						if(currentIndex != i){
							arr[i]++;
						}
						arr2.push_back(i);
						

					}
				}
				arr2size = arr2.size();
				for(int k = 0; k < arr2size-1; k++){
					for(int m = k+1; m < arr2size; m++){
						if(!p[arr2[k]][arr2[m]]){
							return 0;
						}
					}
				}
				for(int k = 0; k < arr2size; k++){
					for(int m = 0; m < n; m++){
						if(p[arr2[k]][m]){
							if(find(arr2.begin(), arr2.end(), m) == arr2.end()){
								return 0;
							}
						}
					}
				}

				arr[currentIndex]++;
				arr2.clear();
			}
			

			
			currentIndex++;
		}
	
		
		for(int i = 0 ; i < n; i++){
			if(arr[i] > 1){
				return 0;
			}
		}
		
		

		for(int i = 0; i < n; i++){
			answer[i][i] = 0;
		}

		build(answer);
		return 1;
	}

	//subtask 3
	count = 0;
	for(int i = 0; i < n; i++){
		for(int j = 0; j < n; j++){
			if(p[i][j] == 0 || p[i][j] == 2){
				count++;
			}
		}
	}
	if(count == (n*n)-n){

		if(n==2){
			return 0;
		}
		
		vector<int> arr(n, 0);
		vector<int> arr2;
		int arr2size;

		for(int i = 0; i < n; i++){
			for(int j = 0; j < n; j++){
				answer[i][j] = 0;
			}
		}

		int currentIndex = 0;

		while(currentIndex != n){

			if(!arr[currentIndex]){
				arr2.push_back(currentIndex);
				for(int i = 0; i < n; i++){
					if(p[currentIndex][i]){
						if(arr[i]){
							return 0;
						}
						
						if(currentIndex != i){
							arr[i]++;
							arr2.push_back(i);
						}
						

					}
				}
				arr2size = arr2.size();

				if(arr2size > 2){
					answer[arr2[0]][arr2[arr2size-1]] = 1;
					answer[arr2[arr2size-1]][arr2[0]] = 1;
					for(int k = 0; k < arr2size-1; k++){
						answer[arr2[k]][arr2[k+1]] = 1;
						answer[arr2[k+1]][arr2[k]] = 1;
					}
				}
				else if(arr2size == 2){
					return 0;
				}


				for(int k = 0; k < arr2size-1; k++){
					for(int m = k+1; m < arr2size; m++){
						if(!p[arr2[k]][arr2[m]]){
							return 0;
						}
					}
				}

				for(int k = 0; k < arr2size; k++){
					for(int m = 0; m < n; m++){
						if(p[arr2[k]][m]){
							if(find(arr2.begin(), arr2.end(), m) == arr2.end()){
								return 0;
							}
						}
					}
				}

				arr[currentIndex]++;
				arr2.clear();
			}
			

			
			currentIndex++;
		}
	
		
		for(int i = 0 ; i < n; i++){
			if(arr[i] > 1){
				return 0;
			}
		}
		
		

		for(int i = 0; i < n; i++){
			answer[i][i] = 0;
		}

		build(answer);
		return 1;
	}

	//subtask 4
	count = 0;
	for(int i = 0; i < n; i++){
		for(int j = 0; j < n; j++){
			if(p[i][j] <= 2){
				count++;
			}
		}
	}
	if(count == n*n){

		vector<int> arr(n, 0);
		vector<int> arr2;
		vector<int> arr3;
		int arr2size, arr3size;

		for(int i = 0; i < n; i++){
			for(int j = 0; j < n; j++){
				answer[i][j] = 0;
			}
		}

		int currentIndex = 0;

		while(currentIndex != n){

			if(!arr[currentIndex]){
				arr2.push_back(currentIndex);
				for(int i = 0; i < n; i++){
					if(p[currentIndex][i] == 2){
						if(arr[i]){
							return 0;
						}
						
						if(currentIndex != i){
							arr[i]++;
							arr2.push_back(i);
						}
						

					}
					else if(p[currentIndex][i]){

						if(arr[i]){
							return 0;
						}

						answer[currentIndex][i] = 1;
						answer[i][currentIndex] = 1;

						if(currentIndex != i){
							arr[i]++;
						}
						arr3.push_back(i);
					}
				}
				arr2size = arr2.size();

				if(arr2size > 2){
					answer[arr2[0]][arr2[arr2size-1]] = 1;
					answer[arr2[arr2size-1]][arr2[0]] = 1;
					for(int k = 0; k < arr2size-1; k++){
						answer[arr2[k]][arr2[k+1]] = 1;
						answer[arr2[k+1]][arr2[k]] = 1;
					}
				}
				else if(arr2size == 2){
					return 0;
				}


				for(int k = 0; k < arr2size-1; k++){
					for(int m = k+1; m < arr2size; m++){
						if(!p[arr2[k]][arr2[m]]){
							return 0;
						}
					}
				}

				for(int k = 0; k < arr2size; k++){
					for(int m = 0; m < n; m++){
						if(p[arr2[k]][m]){
							if(find(arr2.begin(), arr2.end(), m) == arr2.end()){
								return 0;
							}
						}
					}
				}

				arr[currentIndex]++;
				arr2.clear();
			}
			

			
			currentIndex++;
		}
	
		
		for(int i = 0 ; i < n; i++){
			if(arr[i] > 1){
				return 0;
			}
		}
		
		

		for(int i = 0; i < n; i++){
			answer[i][i] = 0;
		}

		build(answer);
		return 1;
	}



	build(answer);
	return 1;
}

Compilation message

supertrees.cpp: In function 'int construct(std::vector<std::vector<int> >)':
supertrees.cpp:265:17: warning: unused variable 'arr3size' [-Wunused-variable]
  265 |   int arr2size, arr3size;
      |                 ^~~~~~~~

Subtask #1
11.0 / 11.0

# Verdict Execution time Memory Grader output
1 Correct 0 ms 212 KB Output is correct
2 Correct 0 ms 212 KB Output is correct
3 Correct 0 ms 212 KB Output is correct
4 Correct 1 ms 212 KB Output is correct
5 Correct 0 ms 212 KB Output is correct
6 Correct 6 ms 1108 KB Output is correct
7 Correct 161 ms 22028 KB Output is correct

Subtask #2
10.0 / 10.0

# Verdict Execution time Memory Grader output
1 Correct 0 ms 212 KB Output is correct
2 Correct 0 ms 212 KB Output is correct
3 Correct 0 ms 212 KB Output is correct
4 Correct 1 ms 212 KB Output is correct
5 Correct 0 ms 212 KB Output is correct
6 Correct 6 ms 1108 KB Output is correct
7 Correct 161 ms 22028 KB Output is correct
8 Correct 0 ms 212 KB Output is correct
9 Correct 0 ms 212 KB Output is correct
10 Correct 0 ms 212 KB Output is correct
11 Correct 1 ms 212 KB Output is correct
12 Correct 6 ms 1172 KB Output is correct
13 Correct 153 ms 22004 KB Output is correct
14 Correct 0 ms 212 KB Output is correct
15 Correct 1 ms 212 KB Output is correct
16 Correct 5 ms 724 KB Output is correct
17 Correct 74 ms 12032 KB Output is correct
18 Correct 0 ms 212 KB Output is correct
19 Correct 0 ms 212 KB Output is correct
20 Correct 47 ms 5668 KB Output is correct
21 Correct 154 ms 21968 KB Output is correct
22 Correct 153 ms 22020 KB Output is correct
23 Correct 209 ms 22020 KB Output is correct
24 Correct 158 ms 22040 KB Output is correct
25 Correct 69 ms 12032 KB Output is correct
26 Correct 66 ms 12036 KB Output is correct
27 Correct 202 ms 22020 KB Output is correct
28 Correct 157 ms 22020 KB Output is correct

Subtask #3
19.0 / 19.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 212 KB Output is correct
2 Correct 0 ms 212 KB Output is correct
3 Correct 0 ms 212 KB Output is correct
4 Correct 0 ms 212 KB Output is correct
5 Correct 0 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 6 ms 1108 KB Output is correct
9 Correct 162 ms 22020 KB Output is correct
10 Correct 0 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 322 ms 22004 KB Output is correct
14 Correct 0 ms 212 KB Output is correct
15 Correct 1 ms 212 KB Output is correct
16 Correct 3 ms 724 KB Output is correct
17 Correct 72 ms 12048 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 38 ms 6144 KB Output is correct
22 Correct 158 ms 23932 KB Output is correct
23 Correct 152 ms 23980 KB Output is correct
24 Correct 229 ms 23936 KB Output is correct
25 Correct 66 ms 14100 KB Output is correct
26 Correct 81 ms 14068 KB Output is correct
27 Correct 153 ms 23952 KB Output is correct
28 Correct 205 ms 24048 KB Output is correct
29 Correct 66 ms 14028 KB Output is correct

Subtask #4
0 / 35.0

# Verdict Execution time Memory Grader output
1 Correct 0 ms 212 KB Output is correct
2 Correct 0 ms 212 KB Output is correct
3 Correct 0 ms 212 KB Output is correct
4 Correct 38 ms 5720 KB Output is correct
5 Correct 187 ms 21948 KB Output is correct
6 Correct 155 ms 22056 KB Output is correct
7 Correct 231 ms 21980 KB Output is correct
8 Correct 1 ms 212 KB Output is correct
9 Correct 39 ms 6204 KB Output is correct
10 Correct 188 ms 23968 KB Output is correct
11 Correct 149 ms 23948 KB Output is correct
12 Correct 199 ms 23976 KB Output is correct
13 Correct 1 ms 212 KB Output is correct
14 Incorrect 1 ms 212 KB Answer gives possible 0 while actual possible 1
15 Halted 0 ms 0 KB -

Subtask #5
0 / 21.0

# Verdict Execution time Memory Grader output
1 Correct 0 ms 212 KB Output is correct
2 Correct 0 ms 212 KB Output is correct
3 Correct 0 ms 212 KB Output is correct
4 Correct 1 ms 212 KB Output is correct
5 Correct 0 ms 212 KB Output is correct
6 Correct 6 ms 1108 KB Output is correct
7 Correct 161 ms 22028 KB Output is correct
8 Correct 0 ms 212 KB Output is correct
9 Correct 0 ms 212 KB Output is correct
10 Correct 0 ms 212 KB Output is correct
11 Correct 1 ms 212 KB Output is correct
12 Correct 6 ms 1172 KB Output is correct
13 Correct 153 ms 22004 KB Output is correct
14 Correct 0 ms 212 KB Output is correct
15 Correct 1 ms 212 KB Output is correct
16 Correct 5 ms 724 KB Output is correct
17 Correct 74 ms 12032 KB Output is correct
18 Correct 0 ms 212 KB Output is correct
19 Correct 0 ms 212 KB Output is correct
20 Correct 47 ms 5668 KB Output is correct
21 Correct 154 ms 21968 KB Output is correct
22 Correct 153 ms 22020 KB Output is correct
23 Correct 209 ms 22020 KB Output is correct
24 Correct 158 ms 22040 KB Output is correct
25 Correct 69 ms 12032 KB Output is correct
26 Correct 66 ms 12036 KB Output is correct
27 Correct 202 ms 22020 KB Output is correct
28 Correct 157 ms 22020 KB Output is correct
29 Correct 1 ms 212 KB Output is correct
30 Correct 0 ms 212 KB Output is correct
31 Correct 0 ms 212 KB Output is correct
32 Correct 0 ms 212 KB Output is correct
33 Correct 0 ms 212 KB Output is correct
34 Correct 1 ms 212 KB Output is correct
35 Correct 0 ms 212 KB Output is correct
36 Correct 6 ms 1108 KB Output is correct
37 Correct 162 ms 22020 KB Output is correct
38 Correct 0 ms 212 KB Output is correct
39 Correct 0 ms 212 KB Output is correct
40 Correct 8 ms 1108 KB Output is correct
41 Correct 322 ms 22004 KB Output is correct
42 Correct 0 ms 212 KB Output is correct
43 Correct 1 ms 212 KB Output is correct
44 Correct 3 ms 724 KB Output is correct
45 Correct 72 ms 12048 KB Output is correct
46 Correct 0 ms 212 KB Output is correct
47 Correct 0 ms 212 KB Output is correct
48 Correct 0 ms 212 KB Output is correct
49 Correct 38 ms 6144 KB Output is correct
50 Correct 158 ms 23932 KB Output is correct
51 Correct 152 ms 23980 KB Output is correct
52 Correct 229 ms 23936 KB Output is correct
53 Correct 66 ms 14100 KB Output is correct
54 Correct 81 ms 14068 KB Output is correct
55 Correct 153 ms 23952 KB Output is correct
56 Correct 205 ms 24048 KB Output is correct
57 Correct 66 ms 14028 KB Output is correct
58 Correct 1 ms 304 KB Output is correct
59 Correct 0 ms 296 KB Output is correct
60 Correct 3 ms 852 KB Output is correct
61 Correct 73 ms 14080 KB Output is correct
62 Correct 1 ms 212 KB Output is correct
63 Incorrect 1 ms 212 KB Answer gives possible 0 while actual possible 1
64 Halted 0 ms 0 KB -

Subtask #6
0 / 4.0

# Verdict Execution time Memory Grader output
1 Correct 0 ms 212 KB Output is correct
2 Correct 0 ms 212 KB Output is correct
3 Correct 0 ms 212 KB Output is correct
4 Correct 1 ms 212 KB Output is correct
5 Correct 0 ms 212 KB Output is correct
6 Correct 6 ms 1108 KB Output is correct
7 Correct 161 ms 22028 KB Output is correct
8 Correct 0 ms 212 KB Output is correct
9 Correct 0 ms 212 KB Output is correct
10 Correct 0 ms 212 KB Output is correct
11 Correct 1 ms 212 KB Output is correct
12 Correct 6 ms 1172 KB Output is correct
13 Correct 153 ms 22004 KB Output is correct
14 Correct 0 ms 212 KB Output is correct
15 Correct 1 ms 212 KB Output is correct
16 Correct 5 ms 724 KB Output is correct
17 Correct 74 ms 12032 KB Output is correct
18 Correct 0 ms 212 KB Output is correct
19 Correct 0 ms 212 KB Output is correct
20 Correct 47 ms 5668 KB Output is correct
21 Correct 154 ms 21968 KB Output is correct
22 Correct 153 ms 22020 KB Output is correct
23 Correct 209 ms 22020 KB Output is correct
24 Correct 158 ms 22040 KB Output is correct
25 Correct 69 ms 12032 KB Output is correct
26 Correct 66 ms 12036 KB Output is correct
27 Correct 202 ms 22020 KB Output is correct
28 Correct 157 ms 22020 KB Output is correct
29 Correct 1 ms 212 KB Output is correct
30 Correct 0 ms 212 KB Output is correct
31 Correct 0 ms 212 KB Output is correct
32 Correct 0 ms 212 KB Output is correct
33 Correct 0 ms 212 KB Output is correct
34 Correct 1 ms 212 KB Output is correct
35 Correct 0 ms 212 KB Output is correct
36 Correct 6 ms 1108 KB Output is correct
37 Correct 162 ms 22020 KB Output is correct
38 Correct 0 ms 212 KB Output is correct
39 Correct 0 ms 212 KB Output is correct
40 Correct 8 ms 1108 KB Output is correct
41 Correct 322 ms 22004 KB Output is correct
42 Correct 0 ms 212 KB Output is correct
43 Correct 1 ms 212 KB Output is correct
44 Correct 3 ms 724 KB Output is correct
45 Correct 72 ms 12048 KB Output is correct
46 Correct 0 ms 212 KB Output is correct
47 Correct 0 ms 212 KB Output is correct
48 Correct 0 ms 212 KB Output is correct
49 Correct 38 ms 6144 KB Output is correct
50 Correct 158 ms 23932 KB Output is correct
51 Correct 152 ms 23980 KB Output is correct
52 Correct 229 ms 23936 KB Output is correct
53 Correct 66 ms 14100 KB Output is correct
54 Correct 81 ms 14068 KB Output is correct
55 Correct 153 ms 23952 KB Output is correct
56 Correct 205 ms 24048 KB Output is correct
57 Correct 66 ms 14028 KB Output is correct
58 Correct 0 ms 212 KB Output is correct
59 Correct 0 ms 212 KB Output is correct
60 Correct 0 ms 212 KB Output is correct
61 Correct 38 ms 5720 KB Output is correct
62 Correct 187 ms 21948 KB Output is correct
63 Correct 155 ms 22056 KB Output is correct
64 Correct 231 ms 21980 KB Output is correct
65 Correct 1 ms 212 KB Output is correct
66 Correct 39 ms 6204 KB Output is correct
67 Correct 188 ms 23968 KB Output is correct
68 Correct 149 ms 23948 KB Output is correct
69 Correct 199 ms 23976 KB Output is correct
70 Correct 1 ms 212 KB Output is correct
71 Incorrect 1 ms 212 KB Answer gives possible 0 while actual possible 1
72 Halted 0 ms 0 KB -