#include <bits/stdc++.h>
using namespace std;
typedef long long LL;
const int MOD = 1e9 + 7;
int main() {
    LL n;
    scanf("%lld", &n);
    if (n >= 50000)
    {
        puts("1");
        return 0;
    }
    LL m = n - 1;
    LL ans = 0;
    for (LL a = 1; a * 3 <= m; a ++ )
    {
        for (LL b = a; b * 2 <= m - a; b ++ )
        {
            LL c = m - a - b;
            if (c >= b)
            {
                ans++;
                ans %= MOD;
            }
        }
    }
    printf("%lld\n", ans);
    return 0;
}