#include <iostream>
using namespace std;
int N, M;
int dp[105][105];
int kamiori(int x, int y) {
if (x == y) {
dp[x][y] = 1;
return 1;
}
if (dp[x][y]) return dp[x][y];
int ret = 1e9;
for (int i=1; i<x; i++)
ret = min(ret, kamiori(i, y) + kamiori(x-i, y));
for (int i=1; i<y; i++)
ret = min(ret, kamiori(x, i) + kamiori(x, y-i));
dp[x][y] = ret;
return ret;
}
int main() {
ios_base::sync_with_stdio(0);
cin.tie(0);
cin >> N >> M;
cout << kamiori(N, M) << '\n';
return 0;
}