#include <bits/stdc++.h>
using namespace std;
using ll = long long;
using P = pair<int,int>;
#define rep(i, n) for(int i = 0; i < n; i++)
#define all(x) (x).begin(),(x).end()

int main(){
    int n,k;
    cin >> n >> k;
    if(n==1) cout << n << endl;
    else if(k==n-1) cout << n << endl;
    else cout << n-1 << endl;
    return 0;
}