#include <bits/stdc++.h>
#pragma GCC optimize("Ofast,unroll-loops")
#pragma GCC target( \
    "sse,sse2,sse3,ssse3,sse4,popcnt,abm,mmx,avx,avx2,tune=native")
using namespace std;
void itval(istream_iterator<string> it) {}
template <typename T, typename... Args>
void itval(istream_iterator<string> it, T a, Args... args) {
  cerr << *it << " = " << a << endl;
  itval(++it, args...);
}
const long long int MOD = 1e9 + 7;
template <typename T>
inline void print(T x) {
  cout << x << "\n";
}
template <typename T>
inline void printvec(T x) {
  for (auto a : x) cout << a << ' ';
  cout << '\n';
}
struct custom {
  bool operator()(
      const pair<long long int, pair<long long int, long long int> > &p1,
      const pair<long long int, pair<long long int, long long int> > &p2)
      const {
    return p1.first < p2.first;
  }
};
long long int get_pow(long long int a, long long int b, long long int M = MOD) {
  long long int res = 1;
  while (b) {
    if (b & 1) res = (res * a) % M;
    a = (a * a) % M;
    b >>= 1;
  }
  return res;
}
const long long int N = 2e5 + 5, inf = 2e18;
long long int dp[N];
void solve() {
  long long int r, g;
  cin >> r >> g;
  long long int lo = 0, hi = N, m;
  while (lo + 1 < hi) {
    long long int m = (lo + hi) >> 1;
    if ((m * m + m) <= 2 * (r + g))
      lo = m;
    else
      hi = m;
  }
  long long int h = lo, tot = (lo * lo + lo) / 2;
  dp[0] = 1;
  for (long long int i = (long long int)1; i < (long long int)(h + 1); i++) {
    for (int j = r; j >= i; j--) {
      dp[j] += dp[j - i];
      dp[j] %= MOD;
    }
  }
  long long int ans = 0;
  for (long long int i = (long long int)0; i < (long long int)(r + 1); i++) {
    if (tot - i <= g) {
      ans += dp[i];
      ans %= MOD;
    }
  }
  cout << ans;
}
int main() {
  ios_base::sync_with_stdio(false);
  cin.tie(NULL);
  cout.tie(NULL);
  int test = 1;
  clock_t z = clock();
  for (long long int tes = (long long int)0; tes < (long long int)(test);
       tes++) {
    solve();
  }
  fprintf(stderr, "Total Time:%.4f\n", (double)(clock() - z) / CLOCKS_PER_SEC),
      fflush(stderr);
  return 0;
}
