oj.uz

답안 #977457

# 제출 시각 아이디 문제 언어 결과 실행 시간 메모리
977457 2024-05-08T02:36:09 Z Amaarsaa 슈퍼트리 잇기 (IOI20_supertrees) C++14
19 / 100
 176 ms 22256 KB 
#include<bits/stdc++.h>
#include "supertrees.h"
using namespace std;
vector < int > adj[1002];
int ataman[10002], used[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 ++) 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(i);
		for (j = i + 1; j < n; j ++) {
			if ( Get(j) == Get(i) && !used[j]) v.push_back(j);
		}
		if(v.size() == 1) continue;
		if ( v.size() == 2){
			s = 0;
			break;
		}
		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;
		
	}
	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;
		}
		
	}
	
	if ( s == 0) return 0;
	build(ans);
	return s;
}

Compilation message

supertrees.cpp: In function 'int construct(std::vector<std::vector<int> >)':
supertrees.cpp:55:17: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<int>::size_type' {aka 'long unsigned int'} [-Wsign-compare]
   55 |   for (j = 1; j < v.size(); j ++) {
      |               ~~^~~~~~~~~~
supertrees.cpp:77:17: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<int>::size_type' {aka 'long unsigned int'} [-Wsign-compare]
   77 |   for (j = 1; j < v.size(); j ++) {
      |               ~~^~~~~~~~~~

Subtask #1
0 / 11.0

# 결과 실행 시간 메모리 Grader output
1 Correct 0 ms 348 KB Output is correct
2 Incorrect 0 ms 348 KB Answer gives possible 0 while actual possible 1
3 Halted 0 ms 0 KB -

Subtask #2
0 / 10.0

# 결과 실행 시간 메모리 Grader output
1 Correct 0 ms 348 KB Output is correct
2 Incorrect 0 ms 348 KB Answer gives possible 0 while actual possible 1
3 Halted 0 ms 0 KB -

Subtask #3
19.0 / 19.0

# 결과 실행 시간 메모리 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 0 ms 348 KB Output is correct
6 Correct 0 ms 348 KB Output is correct
7 Correct 0 ms 348 KB Output is correct
8 Correct 7 ms 1112 KB Output is correct
9 Correct 159 ms 22072 KB Output is correct
10 Correct 0 ms 348 KB Output is correct
11 Correct 0 ms 348 KB Output is correct
12 Correct 7 ms 1116 KB Output is correct
13 Correct 161 ms 22256 KB Output is correct
14 Correct 0 ms 348 KB Output is correct
15 Correct 1 ms 348 KB Output is correct
16 Correct 4 ms 860 KB Output is correct
17 Correct 89 ms 12088 KB Output is correct
18 Correct 0 ms 348 KB Output is correct
19 Correct 0 ms 348 KB Output is correct
20 Correct 0 ms 348 KB Output is correct
21 Correct 41 ms 5784 KB Output is correct
22 Correct 160 ms 22032 KB Output is correct
23 Correct 176 ms 22036 KB Output is correct
24 Correct 173 ms 22240 KB Output is correct
25 Correct 88 ms 12300 KB Output is correct
26 Correct 75 ms 12068 KB Output is correct
27 Correct 159 ms 22096 KB Output is correct
28 Correct 163 ms 22180 KB Output is correct
29 Correct 84 ms 12080 KB Output is correct

Subtask #4
0 / 35.0

# 결과 실행 시간 메모리 Grader output
1 Correct 1 ms 348 KB Output is correct
2 Correct 0 ms 348 KB Output is correct
3 Incorrect 1 ms 348 KB Answer gives possible 0 while actual possible 1
4 Halted 0 ms 0 KB -

Subtask #5
0 / 21.0

# 결과 실행 시간 메모리 Grader output
1 Correct 0 ms 348 KB Output is correct
2 Incorrect 0 ms 348 KB Answer gives possible 0 while actual possible 1
3 Halted 0 ms 0 KB -

Subtask #6
0 / 4.0

# 결과 실행 시간 메모리 Grader output
1 Correct 0 ms 348 KB Output is correct
2 Incorrect 0 ms 348 KB Answer gives possible 0 while actual possible 1
3 Halted 0 ms 0 KB -