제출 #411973

#제출 시각아이디문제언어결과실행 시간메모리
411973dolijan슈퍼트리 잇기 (IOI20_supertrees)C++14
21 / 100
248 ms23308 KiB
#include "supertrees.h"
#include <vector>
using namespace std;
int construct(std::vector<std::vector<int> > p) {
	int n = p.size();
	std::vector<std::vector<int> > answer;
	answer.resize(n);
	for(int i=0;i<n;i++) answer[i].resize(n);
	int daddy[n];
	for(int i=0;i<n;i++) daddy[i]=i;
    for(int i=0;i<n;i++)
    {
        for(int j=0;j<n;j++)
        {
            answer[i][j]=0;
        }
    }
	for(int i=0;i<n;i++)
    {
        for(int j=i+1;j<n;j++)
        {
            if(p[i][j]==1 && daddy[i]!=daddy[j]){
                daddy[j]=daddy[i];
                answer[j][daddy[i]]=1;
                answer[daddy[i]][j]=1;
            }
        }
    }
    for(int i=0;i<n;i++)
    {
        for(int j=i+1;j<n;j++)
        {
            if(p[i][j]==0)
            {
                if(daddy[i]==daddy[j]) return 0;
            }
            if(p[i][j]==1)
            {
                if(daddy[i]!=daddy[j]) return 0;
            }
        }
    }
	build(answer);
	return 1;
}
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