#include <iostream>
#include <vector>
#include "supertrees.h"
#define MAX_N 1000
using namespace std;
struct dsu {
int n;
int sef[MAX_N];
void init( int x ) {
int i;
n = x;
for ( i = 0; i < n; i++ )
sef[i] = i;
}
int find( int x ) {
if ( sef[x] != x )
sef[x] = find( sef[x] );
return sef[x];
}
void unionn( int x, int y ) {
x = find( x );
y = find( y );
sef[y] = x;
}
};
int construct( vector <vector <int>> p ) {
int n, a, x, y, i, j;
dsu forest[2];
vector <int> f[2][MAX_N], f2[MAX_N];
n = p.size();
vector <vector <int>> b( n );
forest1.init( n );
forest2.init( n );
for ( x = 0; x < n; x++ ) {
for ( y = 0; y < n; y++ ) {
if ( p[x][y] >= 1 )
forest1.unionn( x, y );
if ( p[x][y] >= 2 )
forest2.unionn( x, y );
}
}
for ( x = 0; x < n; x++ ) {
f1[forest1.find( x )].push_back( x );
f2[forest2.find( x )].push_back( x );
}
for ( i = 0; i < n; i++ ) {
for ( j = 0; j < n; j++ )
b[i].push_back( 0 );
}
/// 1
for ( x = 0; x < n; x++ ) {
if ( f1[x].size() ) {
for ( i = 0; i < f1[x].size(); i++ ) {
for ( j = i + 1; j < f1[x].size(); j++ ) {
if ( p[f1[x][i]][f1[x][j]] <= a )
return 0;
}
}
for ( i = 0; i < f1[x].size() - 1; i++ ) {
b[f1[x][i]][f1[x][i + 1]] = 1;
b[f1[x][i + 1]][f1[x][i]] = 1;
}
}
}
build( b );
return 1;
}
Compilation message
supertrees.cpp: In function 'int construct(std::vector<std::vector<int> >)':
supertrees.cpp:41:5: error: 'forest1' was not declared in this scope; did you mean 'forest'?
41 | forest1.init( n );
| ^~~~~~~
| forest
supertrees.cpp:42:5: error: 'forest2' was not declared in this scope; did you mean 'forest'?
42 | forest2.init( n );
| ^~~~~~~
| forest
supertrees.cpp:55:9: error: 'f1' was not declared in this scope; did you mean 'f2'?
55 | f1[forest1.find( x )].push_back( x );
| ^~
| f2
supertrees.cpp:66:14: error: 'f1' was not declared in this scope; did you mean 'f2'?
66 | if ( f1[x].size() ) {
| ^~
| f2
supertrees.cpp:36:9: warning: unused variable 'forest' [-Wunused-variable]
36 | dsu forest[2];
| ^~~~~~
