#include <iostream>
#include <vector>
//#include "supertrees.h"
#define pb push_back
using namespace std;
int n;
vector<vector<int> > a;
int vis[1001], vis2[1001];
vector<int> belong;
int gp[1001], gplwch[1001];
vector<int> gpl;
int fans=1;
vector<int> plamt;
vector<vector<int> > ans;
void dfs(int x)
{
int i;
vis[x]=1, belong.pb(x);
for(i=0;i<n;i++)
if(a[x][i] && !vis[i])
vis[i]=1, dfs(i);
}
void wk2()
{
int i, j;
for(i=0;i<belong.size();i++){
int f=belong[i];
if(!vis2[f]){
vis2[f]=true;
gp[f]=i, gpl.pb(f), gplwch[i]=f;
for(j=0;j<n;j++)
if(a[f][j]==1)
gp[j]=i, vis2[j]=true;
}
}
// circle
if(gpl.size()>=3){
for(i=0;i<gpl.size();i++)
ans[gpl[i]][gpl[(i+1)%gpl.size()]]=ans[gpl[(i+1)%gpl.size()]][gpl[i]]=1;
}
if(gpl.size()==2)
fans=0;
for(i=0;i<belong.size();i++){
int f=belong[i], f2=gp[f];
if(gplwch[f2]!=f)
ans[f][gplwch[f2]]=ans[gplwch[f2]][f]=1;
}
}
void ck()
{
int i, j;
for(i=0;i<belong.size();i++)
for(j=i+1;j<belong.size();j++){
int f=belong[i], f2=belong[j];
if((a[f][f2]==1 && gp[f]!=gp[f2]) || (a[f][f2]==2 && gp[f]==gp[f2]) || a[f][f2]==0)
fans=0;
}
}
void wk()
{
int i;
for(i=0;i<n;i++)
if(!vis[i]){
belong.clear();
gpl.clear();
dfs(i);
wk2();
ck();
}
}
int construct(vector<vector<int> > p)
{
int three=0;
int i, j;
a=p;
n=p.size();
for(i=0;i<n;i++)
plamt.pb(0);
for(i=0;i<n;i++)
ans.pb(plamt);
for(i=0;i<n;i++)
for(j=0;j<n;j++)
if(a[i][j]==3)
three=1;
if(three) fans=0;
else wk();
// if(fans)
// build(ans);
return fans;
}
int main()
{
construct({{1, 2, 0}, {2, 1, 2}, {0, 2, 1}});
return 0;
}
Compilation message
supertrees.cpp: In function 'void wk2()':
supertrees.cpp:35:14: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<int>::size_type' {aka 'long unsigned int'} [-Wsign-compare]
35 | for(i=0;i<belong.size();i++){
| ~^~~~~~~~~~~~~~
supertrees.cpp:47:18: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<int>::size_type' {aka 'long unsigned int'} [-Wsign-compare]
47 | for(i=0;i<gpl.size();i++)
| ~^~~~~~~~~~~
supertrees.cpp:52:14: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<int>::size_type' {aka 'long unsigned int'} [-Wsign-compare]
52 | for(i=0;i<belong.size();i++){
| ~^~~~~~~~~~~~~~
supertrees.cpp: In function 'void ck()':
supertrees.cpp:63:14: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<int>::size_type' {aka 'long unsigned int'} [-Wsign-compare]
63 | for(i=0;i<belong.size();i++)
| ~^~~~~~~~~~~~~~
supertrees.cpp:64:20: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<int>::size_type' {aka 'long unsigned int'} [-Wsign-compare]
64 | for(j=i+1;j<belong.size();j++){
| ~^~~~~~~~~~~~~~
/tmp/ccaMM0ww.o: In function `main':
grader.cpp:(.text.startup+0x0): multiple definition of `main'
/tmp/cclMaL0o.o:supertrees.cpp:(.text.startup+0x0): first defined here
collect2: error: ld returned 1 exit status
