#line 1 "main.cpp"
#include <bits/stdc++.h>
#include <atcoder/all>
// #include "library/templates/template.cpp"
using namespace atcoder;
using namespace std;
using ll = long long int;
using ull = unsigned long long int;
using ld = long double;
using pii = pair<int, int>;
using pll = pair<ll, ll>;

long long solve(long long N, long long K)
{
    if (N == 1)
    {
        return 1;
    }
    if (K != N - 1)
    {
        return N - 1;
    }
    else
    {
        return N;
    }
}

int main()
{
    std::ios_base::sync_with_stdio(false);
    std::cin.tie(nullptr);
    std::cout.tie(nullptr);
    long long N, K;
    std::cin >> N >> K;
    auto ans = solve(N, K);
    std::cout << ans << '\n';
    return 0;
}