#include <bits/stdc++.h>
using namespace std;

const int64_t MOD = 1e9+7;
void add(int64_t& a, int64_t b){
    a = (a+b) % MOD;
}
void mul(int64_t& a, int64_t b){
    a = a*b % MOD;
}

int64_t power_mod(int64_t num, int64_t power){
    int64_t prod = 1;
    num %= MOD;
    while(power > 0){
        if(power&1) prod = prod * num % MOD;
        num = num * num % MOD;
        power >>= 1;
    }
    return prod;
}

int64_t extgcd(int64_t a, int64_t b, int64_t& x, int64_t& y){
    int64_t d = a;
    if(b != 0){
        d = extgcd(b, a%b, y, x);
        y -= (a/b) * x;
    }else{
        x = 1; y = 0;
    }
    return d;
}

int64_t inv_mod(int64_t a){
    int64_t x, y;
    extgcd(a, MOD, x, y);
    return (MOD + x%MOD) % MOD;
}

int64_t comb_mod(int64_t N, int64_t K){
    int64_t res = 1;
    for(int i=0; i<K; i++){
        mul(res, (N-i)%MOD);
        mul(res, inv_mod(i+1));
    }
    return res;
}

int main(){
    int64_t N;
    cin >> N;
    N -= 4;
    int64_t d0 = comb_mod(N+2, 2);
    int64_t d2 = (N/2+1) % MOD;
    int64_t d3 = (N%3 == 0);
    add(d2 , MOD - d3);
    add(d0, MOD - (3*d2 + d3) % MOD);
    mul(d0, inv_mod(6));
    int64_t ans = (d0 + d2 + d3) % MOD;
    cout << ans << endl;
}