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problem details: https://www.urionlinejudge.com.br/judge/en/problems/view/1081
Solution:
#include <bits/stdc++.h>
#define pb push_back
using namespace std;
typedef vector<int> vi;
typedef vector<vi > vii;
vii v;
vi visited;
void dfs(int n, int space)
{
visited[n] = 1;
for (int i = 0 ; i < v[n].size(); i++)
{
for (int j = 0 ; j < space; j++)
cout << ' ';
cout << n << "-" << v[n][i];
if (!visited[v[n][i]] )
{
cout << " pathR(G," << v[n][i] << ")\n";
dfs(v[n][i], space+2);
}
else cout << '\n';
}
}
int main ()
{
static int cases = 1;
int V;
int E;
int u;
int w;
int teste;
vi marcado;
cin >> teste;
while(teste--)
{
cin >> V >> E;
for (int i = 0 ; i < V; i++)
{
v.pb(vi());
visited.pb(0);
marcado.pb(0);
}
for (int i = 0 ; i < E; i++)
{
cin >> u >> w;
marcado[u] = 1;
v[u].pb(w);
}
for (int i = 0 ; i < V; i++)
{
sort(v[i].begin(), v[i].end());
}
cout << "Caso " << cases << ":\n";
cases++;
for (int i = 0 ; i < V; i++)
{
if (!visited[i] && marcado[i])
{
dfs(i,2);
cout << '\n';
}
}
v.clear();
visited.clear();
marcado.clear();
}
}
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https://russelltheprogrammer.com/category/uri-online-judge/
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