이 제출은 이전 버전의 oj.uz에서 채점하였습니다. 현재는 제출 당시와는 다른 서버에서 채점을 하기 때문에, 다시 제출하면 결과가 달라질 수도 있습니다.
#include "supertrees.h"
#include <bits/stdc++.h>
using namespace std;
const int N = 1e3 + 7;
int nn, comp, used[N], cc[N];
vector < int > cmp[N];
int construct(std::vector<std::vector<int>> p) {
nn = p.size();
std::vector<std::vector<int>> answer;
for (int i = 0; i < nn; i++) {
std::vector<int> row;
row.resize(nn);
answer.push_back(row);
}
for ( int i = 0; i < nn; i++ ) {
if ( !cc[i] ) {
cc[i] = ++comp;
}
cmp[ cc[i] ].push_back( i );
for ( int j = 0; j < nn; j++ ) {
if ( p[i][j] ) {
if ( cc[j] && cc[j] != cc[i] ) {
return 0;
}
cc[j] = cc[i];
cmp[ cc[i] ].push_back( j );
}
}
}
for ( int i = 1; i <= comp; i++ ) {
sort( cmp[i].begin(), cmp[i].end() );
for ( int j = 0; j < (int)cmp[i].size() - 1; j++ ) {
if ( cmp[i][j] == cmp[i][j + 1] ) {
continue;
}
answer[ cmp[i][j] ][ cmp[i][j + 1] ] = 1;
answer[ cmp[i][j + 1] ][ cmp[i][j] ] = 1;
}
for ( auto x1: cmp[i] ) {
for ( auto x2: cmp[i] ) {
if ( !p[x1][x2] ) {
return 0;
}
}
}
}
build(answer);
return 1;
}
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