#include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include using namespace std; //#define int long long typedef long long ll; typedef unsigned long long ul; typedef unsigned int ui; const ll mod = 998244353; const ll INF = mod * mod; typedef pair P; #define stop char nyaa;cin>>nyaa; #define rep(i,n) for(int i=0;i=0;i--) #define Rep(i,sta,n) for(int i=sta;i=1;i--) #define Rep1(i,sta,n) for(int i=sta;i<=n;i++) typedef pair LP; typedef vector vec; typedef vector svec; typedef long double ld; typedef pair LDP; const ld eps = 1e-8; void solve() { ll h, w; cin >> h >> w; w = abs(w); ll ad = h - (w-1); ad = max((ll)ad, (ll)0); h -= ad; w--; ll ans = h+ad; /*rep1(i, w) { ans += w / i; }*/ ll k = sqrt(w); //cout << k << endl; ll ma = w; rep1(i, k) { ll r = w / i; ll l = w / (i + 1); ll len = r - l; ans += len * i; ma = min(ma, l); } rep1(i, ma)ans += w / i; cout << ans << endl; } signed main() { ios::sync_with_stdio(false); cin.tie(0); cout << fixed << setprecision(10); //init(); solve(); //cout << "finish" << endl; //stop return 0; }