#include <iostream> #include <cstdio> #include <string> #include <cstring> #include <deque> #include <list> #include <queue> #include <stack> #include <vector> #include <utility> #include <algorithm> #include <map> #include <set> #include <complex> #include <cmath> #include <limits> #include <climits> #include <ctime> #include <cassert> #include <numeric> #include <functional> #include <bitset> using namespace std; using lint = long long int; long long int INF = 1001001001001001LL; int inf = 1000000007; long long int MOD = 1000000007LL; double PI = 3.1415926535897932; template<typename T1,typename T2>inline void chmin(T1 &a,const T2 &b){if(a>b) a=b;} template<typename T1,typename T2>inline void chmax(T1 &a,const T2 &b){if(a<b) a=b;} #define ALL(a) a.begin(),a.end() #define RALL(a) a.rbegin(),a.rend() /* do your best */ int main() { int a, b; cin >> a >> b; cout << min(a, b) * 2 + (a != b) - 1 << endl; return 0; }