제출 #304861

#제출 시각아이디문제언어결과실행 시간메모리
304861daveeed슈퍼트리 잇기 (IOI20_supertrees)C++17
11 / 100
260 ms22136 KiB
#include "supertrees.h"
#include <vector>

const int MAXN = 1000;

bool vis[MAXN];

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);
	}

    for(int i = 0; i < n; i++){
        for(int j = i + 1; j < n; j++){
            if(p[i][j] != p[j][i])
                return 0;
        }
    }

    for(int i = 0; i < n; i++) if(!vis[i]){
        vis[i] = true;
        for(int j = i + 1; j < n; j++) if(p[i][j]){
            answer[i][j] = 1;
            answer[j][i] = 1;
            vis[j] = true;
        }
    }



	build(answer);
	return 1;
}
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