1597 | 2022. 11. 28 20:32:39 | kicsiboglar | Legtávolabbi leszármazott | cpp11 | Elfogadva 50/50 | 93ms | 26040 KiB |
// legtavolabbi leszarmazott.cpp : This file contains the 'main' function. Program execution begins and ends there.
//
#include <iostream>
#include <vector>
#define ll long long
using namespace std;
ll n, a, b, i, maxi=-1,pos=0;
struct element
{
bool seen,f=false;
vector <ll> sz;
ll step=0;
};
vector <element> x;
void dfs(ll curr)
{
x[curr].seen = true;
for (auto e : x[curr].sz)
{
if (!x[e].seen)
{
x[e].step = x[curr].step + a;
dfs(e);
}
}
}
int main()
{
cin >> n;
x.resize(n + 1);
for (i = 1; i < n; ++i)
{
cin >> a >> b;
x[a].sz.push_back(b);
x[b].f = true;
}
for (i = 1; i <= n; ++i)
{
if (!x[i].f)
{
dfs(i);
break;
}
}
for (i = 1; i <= n; ++i)
{
if (x[i].step > maxi)
{
maxi = x[i].step;
pos = i;
}
}
cout << pos;
}
Részfeladat | Összpont | Teszt | Verdikt | Idő | Memória | ||
---|---|---|---|---|---|---|---|
base | 50/50 | ||||||
1 | Elfogadva | 0/0 | 3ms | 1872 KiB | |||
2 | Elfogadva | 0/0 | 75ms | 12380 KiB | |||
3 | Elfogadva | 1/1 | 2ms | 2260 KiB | |||
4 | Elfogadva | 3/3 | 2ms | 2460 KiB | |||
5 | Elfogadva | 3/3 | 2ms | 2664 KiB | |||
6 | Elfogadva | 1/1 | 2ms | 2780 KiB | |||
7 | Elfogadva | 1/1 | 2ms | 2872 KiB | |||
8 | Elfogadva | 1/1 | 3ms | 3256 KiB | |||
9 | Elfogadva | 2/2 | 83ms | 14632 KiB | |||
10 | Elfogadva | 3/3 | 82ms | 14744 KiB | |||
11 | Elfogadva | 3/3 | 2ms | 3496 KiB | |||
12 | Elfogadva | 4/4 | 86ms | 20148 KiB | |||
13 | Elfogadva | 4/4 | 86ms | 20256 KiB | |||
14 | Elfogadva | 3/3 | 8ms | 4876 KiB | |||
15 | Elfogadva | 3/3 | 83ms | 19740 KiB | |||
16 | Elfogadva | 3/3 | 78ms | 20760 KiB | |||
17 | Elfogadva | 3/3 | 83ms | 20224 KiB | |||
18 | Elfogadva | 4/4 | 61ms | 15568 KiB | |||
19 | Elfogadva | 4/4 | 74ms | 18960 KiB | |||
20 | Elfogadva | 4/4 | 93ms | 26040 KiB |