BOJ 34416 - Follow The Prize [C++]

문제

링크

풀이

#include <iostream>
using namespace std;
 
void solve(void) {
  int n; cin >> n;
  int k; cin >> k;
  int m; cin >> m;
 
  while (m--) {
    int a, b; cin >> a >> b;
    if (k == a) k = b;
    else if (k == b) k = a;
  }
  cout << k;
}
 
int main(void) {
  ios::sync_with_stdio(false);
  cin.tie(nullptr);
 
  solve();
  return 0;
}