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

int main() {
    int n, k;
    cin >> n >> k;
    int out = 0;
    if(n == 1) out = n;
    else if(n == 2) {
        if(k == 1) out = 2;
        else out = 1;
    }
    else out = n - 1; 

    cout << out << '\n';
}