#include "bits/stdc++.h"
using namespace std;
vector<long long> Representantes;
vector<long long> Tama_os;
void Iniciar(long long n){
for(long long i = 0; i < n; i++){
Representantes[i] = i;
Tama_os[i] = 1;
}
}
long long Buscar(long long a){
if(Representantes[a] == a) return a;
else return Representantes[a] = Buscar(Representantes[a]);
}
void Unir(long long A, long long B){
long long a = Buscar(A);
long long b = Buscar(B);
if(Tama_os[a] > Tama_os[b]){
Tama_os[a] += Tama_os[b];
Representantes[b] = a;
} else {
Tama_os[b] += Tama_os[a];
Representantes[a] = b;
}
}
int main(){
ios_base::sync_with_stdio(0);
cin.tie(0);
long long n;
cin>>n;
Representantes.assign(n, 1);
Tama_os.assign(n, 1);
Iniciar(n);
vector< pair<long long, long long> > Aristas(n - 1);
for(long long i = 0; i < n - 1; i++) cin>>Aristas[i].first>>Aristas[i].second;
long long Respuesta = 2222222222222222;
for(long long i = 0; i < n - 2; i++){
for(long long j = i + 1; j < n - 1; j++){
//cout<<i<<" "<<j<<"\n";
Iniciar(n);
for(long long k = 0; k < n - 1; k++) if(k != i and k != j) Unir(Aristas[k].first - 1, Aristas[k].second - 1);
long long Mayor = -2;
long long Menor = 2222222222222222;
for(long long k = 0; k < n; k++){
Mayor = max(Tama_os[Buscar(k)], Mayor);
Menor = min(Tama_os[Buscar(k)], Menor);
}
Respuesta = min(Respuesta, Mayor - Menor);
}
}
cout<<Respuesta;
return 0;
}
# |
Verdict |
Execution time |
Memory |
Grader output |
1 |
Correct |
70 ms |
344 KB |
Output is correct |
2 |
Correct |
43 ms |
440 KB |
Output is correct |
3 |
Correct |
45 ms |
344 KB |
Output is correct |
4 |
Correct |
47 ms |
344 KB |
Output is correct |
5 |
Correct |
44 ms |
348 KB |
Output is correct |
# |
Verdict |
Execution time |
Memory |
Grader output |
1 |
Correct |
70 ms |
344 KB |
Output is correct |
2 |
Correct |
43 ms |
440 KB |
Output is correct |
3 |
Correct |
45 ms |
344 KB |
Output is correct |
4 |
Correct |
47 ms |
344 KB |
Output is correct |
5 |
Correct |
44 ms |
348 KB |
Output is correct |
6 |
Execution timed out |
1056 ms |
348 KB |
Time limit exceeded |
7 |
Halted |
0 ms |
0 KB |
- |
# |
Verdict |
Execution time |
Memory |
Grader output |
1 |
Correct |
70 ms |
344 KB |
Output is correct |
2 |
Correct |
43 ms |
440 KB |
Output is correct |
3 |
Correct |
45 ms |
344 KB |
Output is correct |
4 |
Correct |
47 ms |
344 KB |
Output is correct |
5 |
Correct |
44 ms |
348 KB |
Output is correct |
6 |
Execution timed out |
1056 ms |
348 KB |
Time limit exceeded |
7 |
Halted |
0 ms |
0 KB |
- |