#include <bits/stdc++.h>

using namespace std;

#define rep(i, s, e) for (int i = s; i <= e; ++i)
#define drep(i, s, e) for (int i = s; i >= e; --i)
#define file(a) freopen(#a".in", "r", stdin), freopen(#a".out", "w", stdout)
#define pv(a) cout << #a << " = " << a << endl
#define pa(a, l, r) cout << #a " : "; rep(_, l, r) cout << a[_] << ' '; cout << endl

const int N = 1e6 + 10;

int read() {
  int x = 0, f = 1; char c = getchar();
  for (; c < '0' || c > '9'; c = getchar()) if (c == '-') f = -1;
  for (; c >= '0' && c <= '9'; c = getchar()) x = x * 10 + c - 48;
  return x * f;
}

void cmin(int &a, int b) { a > b ? a = b : 1; }
void cmax(int &a, int b) { a < b ? a = b : 1; }

int s, c, f[N], g[N];
long long ans;

int main() {
  s = read(), c = read() / 2;
  rep(i, 0, 2 * s) f[i] = c + 1;
  rep(i, 1, c - 1) f[i - 1] = i + 1;
  for (int a = 2; a * a <= s; ++ a) {
    rep(i, 0, 2 * s) g[i] = f[i];
    g[0] = 0;
    rep(i, 0, 2 * s) {
      if (i >= 2 * a - 1) cmin(g[i], g[i - (2 * a - 1)] + 1);
      if (i >= 2 * a * (a - 1)) cmin(f[i], g[i - 2 * a * (a - 1)] + 2 * a);
    }
  }
  rep(i, 0, 2 * s) if (f[i] <= c) {
    int cnt = min(s - (f[i] + i) / 2 + 1, (c - f[i]) / 2 + 1);
    if (cnt >= 0) ans += cnt;
  }
  printf("%lld\n", ans);
  return 0;
}