#include #include #include #include #include #include #include #include #include #include #include #include #define debug_value(x) cerr << "line" << __LINE__ << ":<" << __func__ << ">:" << #x << "=" << x << endl; #define debug(x) cerr << "line" << __LINE__ << ":<" << __func__ << ">:" << x << endl; template inline bool chmax(T& a, T b) { if (a < b) { a = b; return 1; } return 0; } template inline bool chmin(T& a, T b) { if (a > b) { a = b; return 1; } return 0; } using namespace std; typedef long long ll; int main(){ ios::sync_with_stdio(false); cin.tie(0); cout << setprecision(10) << fixed; int a, b; cin >> a >> b; if(a > b) swap(a, b); if(a == b || (a == 2 && b == 4)){ cout << "Yes" << endl; }else{ cout << "No" << endl; } }