int32_t main(){
    ios::sync_with_stdio(0); cin.tie(0); cout.tie(0);
int n;
    int c; cin >> c >> n;
    int x = c >> n;
    if((x&1) != ((x>>1)&1)){
       if(x&1) cout << c + (1<<n) << '+';
       else cout << c - (1<<n) << '-';
    }else cout << c;
}