2020 | 2022. 12. 14 18:55:43 | TomaSajt | Legtávolabbi leszármazott | cpp17 | Elfogadva 50/50 | 41ms | 15232 KiB |
#include <bits/stdc++.h>
#define speed ios::sync_with_stdio(0);cin.tie(0)
using namespace std;
int main() {
speed;
int n;
cin >> n;
vector<int> par(n + 1, -1);
vector<vector<int>> children(n + 1);
int u, v;
while (cin >> u >> v) {
par[v] = u;
children[u].push_back(v);
}
int root = 0;
for (int i = 1; i <= n; i++) {
if (par[i] == -1) root = i;
}
queue<int> q;
q.push(root);
int last = -1;
while (!q.empty()) {
int u = q.front(); q.pop();
for (int v : children[u]) {
q.push(v);
last = v;
}
}
cout << last;
}
Részfeladat | Összpont | Teszt | Verdikt | Idő | Memória | ||
---|---|---|---|---|---|---|---|
base | 50/50 | ||||||
1 | Elfogadva | 0/0 | 3ms | 1860 KiB | |||
2 | Elfogadva | 0/0 | 32ms | 9796 KiB | |||
3 | Elfogadva | 1/1 | 2ms | 2296 KiB | |||
4 | Elfogadva | 3/3 | 2ms | 2452 KiB | |||
5 | Elfogadva | 3/3 | 2ms | 2656 KiB | |||
6 | Elfogadva | 1/1 | 2ms | 2860 KiB | |||
7 | Elfogadva | 1/1 | 2ms | 3076 KiB | |||
8 | Elfogadva | 1/1 | 3ms | 3420 KiB | |||
9 | Elfogadva | 2/2 | 37ms | 11936 KiB | |||
10 | Elfogadva | 3/3 | 39ms | 11932 KiB | |||
11 | Elfogadva | 3/3 | 2ms | 3340 KiB | |||
12 | Elfogadva | 4/4 | 35ms | 12660 KiB | |||
13 | Elfogadva | 4/4 | 35ms | 12836 KiB | |||
14 | Elfogadva | 3/3 | 4ms | 4464 KiB | |||
15 | Elfogadva | 3/3 | 34ms | 13380 KiB | |||
16 | Elfogadva | 3/3 | 32ms | 12520 KiB | |||
17 | Elfogadva | 3/3 | 35ms | 12696 KiB | |||
18 | Elfogadva | 4/4 | 26ms | 10920 KiB | |||
19 | Elfogadva | 4/4 | 30ms | 12172 KiB | |||
20 | Elfogadva | 4/4 | 41ms | 15232 KiB |