/**
 *   @FileName	a.cpp
 *   @Author	kanpurin
 *   @Created	2021.11.19 23:58:46
**/

#include "bits/stdc++.h" 
using namespace std; 
typedef long long ll;


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