#include <bits/stdc++.h>
using namespace std;

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