문제

링크

풀이

#include <algorithm>
#include <iostream>
using namespace std;
 
void solve(void) {
  int n, m; cin >> n >> m;
 
  if (n == 1) cout << 1;
  else if (n == 2) cout << min(4, (m + 1) / 2);
  else if (m < 7) cout << min(4, m);
  else cout << m - 2;
}
 
int main(void) {
  ios::sync_with_stdio(false);
  cin.tie(nullptr);
 
  solve();
  return 0;
}