Submission #366617

#	Time	Username	Problem	Language	Result	Execution time	Memory
366617		SlavicG	Connecting Supertrees (IOI20_supertrees)	C++17	Compilation error	0 ms	0 KiB

supertrees

#include "supertrees.h"
#include "bits/stdc++.h"

using namespace std;
 
#define              ll              long long
 
#define       forn(i,n)              for(int i=0;i<n;i++)
#define          all(v)              v.begin(), v.end()
#define         rall(v)              v.rbegin(),v.rend()
 
#define            pb                push_back
#define          sz(a)               (int)a.size()
#define         fastio               ios_base::sync_with_stdio(false);cin.tie(0);cout.tie(0);

const int N = 1001;
vector<int> adj[N];
bool vis[N];
vector<int> component;

void dfs(int u)
{
	vis[u] = true;
	component.pb(u);
	for(auto x : adj[u]){
		if(!vis[x])dfs(x);
	}
}
int construct(vector<vector<int>> p)
{
	int n = sz(p);
	vector<vector<int>> ans;
	ans.resize(n);
	for(int i =0;i < n;i++)ans[i].resize(n);
	forn(i,n)forn(j,n)ans[i][j]=0;
	for(int i = 0;i < n;i++)
	{
		for(int j = 0;j < n;j++)
		{
			if(p[i][j])adj[i].pb(j);
		}
	}
	int c[n][n];
	int cnt = 0;
	for(int i = 0;i < n;i++)
	{
		for(int j = 0;j<n;j++)
		{
			c[i][j] = cnt++;
		}
	}
	for(int i = 0;i < n;i++)
	{
		if(!vis[i]){
			component.clear();
			dfs(i);

			for(int j = 0;j < sz(component);j++)
			{
				for(int k = j + 1;k < sz(component);k++)
				{
					c[j][k] = c[k][j] = comp[0];
				}
			}
			for(int j = 1;j < sz(component);j++)
			{
				ans[component[j]][component[j-1]] = ans[component[j-1]][component[j]] = 1; 
			}
		}
	}

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

Compilation message (stderr)

supertrees.cpp: In function 'int construct(std::vector<std::vector<int> >)':
supertrees.cpp:62:26: error: 'comp' was not declared in this scope
   62 |      c[j][k] = c[k][j] = comp[0];
      |                          ^~~~
supertrees.cpp:76:25: error: expected ')' before '!' token
   76 |    if(c[i][j] == c[j][i] !p[i][j])return 0;
      |      ~                  ^~
      |                         )
supertrees.cpp:79:15: error: expected ';' before ')' token
   79 |  for(int i = 0)
      |               ^
      |               ;
supertrees.cpp:79:15: error: expected primary-expression before ')' token
supertrees.cpp:79:15: error: expected ';' before ')' token
   79 |  for(int i = 0)
      |               ^
      |               ;
supertrees.cpp:79:10: warning: unused variable 'i' [-Wunused-variable]
   79 |  for(int i = 0)
      |          ^