// Slower C++ solution:
#include<bits/stdc++.h>

#include<iostream>

#include<cstdio>

#include<vector>

#include<string>

#include<algorithm>

#include<map>

using namespace std;

#define rep(i,x) for(int i = 0; i < x; i++)

#define pb push_back

#define mp make_pair

typedef long long ll;

typedef long double ld;

typedef pair<int,int> P;

typedef pair<ll,ll> Pll;

typedef vector<int> vi;

typedef vector<vector<int>> vvi;

typedef vector<vector<vector<int>>> vvvi;

const ll MOD = 1e9+7;

const int n_max = 1e5+10;

void add (ll &a, ll &b){

    a += b;

    if(a >= MOD) a-= MOD;

}

int main(){

    int n; cin >> n;

    vector<ll> c(n);

    rep(i,n) cin >> c[i];

    vector<ll> dp(220000, 0);

    vector<int> place[210000];

    rep(i,n){

        place[c[i]].push_back(i);

    }

    dp[0] = 1;

    rep(i,n+1){

        if(!i)continue;

        

        add(dp[i], dp[i-1]);



        int color = c[i-1];

        int it = lower_bound(place[color].begin(), place[color].end(), i-1) - place[color].begin();

        if(it > 0){

            int j = place[color][it-1];

            if((i-1) - j > 1)add(dp[i], dp[j+1]);

        }

    }

    cout << dp[n] << endl;

    return 0;

}

// Faster C++ solution for the same problem (measured speedup: 3.2973401053989253x):
#ifdef LOCAL

#define _GLIBCXX_DEBUG

#endif

#include<bits/stdc++.h>

using namespace std;

#define rep(i,s,t) for(ll i = (ll)(s); i < (ll)(t); i++)

#define rrep(i,s,t) for(ll i = (ll)(s-1);(ll)(t) <= i; i--)

#define all(x) (x).begin(), (x).end()

typedef long long ll;

typedef long double ld;

typedef pair<ll,ll> Pll;

typedef vector<ll> vl;

typedef vector<vl> vvl;

typedef vector<vvl> vvvl;

constexpr ll INF = numeric_limits<ll>::max()/4;

constexpr ll n_max = 2e5+10;

#define int ll



template <typename A, typename B>

string to_string(pair<A, B> p);

string to_string(const string &s) {return '"' + s + '"';}

string to_string(const char *c) {return to_string((string) c);}

string to_string(bool b) {return (b ? "true" : "false");}

template <size_t N>

string to_string(bitset<N> v){

    string res = "";

    for(size_t i = 0; i < N; i++) res += static_cast<char>('0' + v[i]);

    return res;

}

template <typename A>

string to_string(A v) {

    bool first = true;

    string res = "{";

    for(const auto &x : v) {

        if(!first) res += ", ";

        first = false;

        res += to_string(x);

    }

    res += "}";

    return res;

}

template <typename A, typename B>

string to_string(pair<A, B> p){return "(" + to_string(p.first) + ", " + to_string(p.second) + ")";}



void debug_out() {cerr << endl;}

template<typename Head, typename... Tail>

void debug_out(Head H, Tail... T) {

    cerr << " " << to_string(H);

    debug_out(T...);

}



#ifdef LOCAL

#define debug(...) cerr << "[" << #__VA_ARGS__ << "]:", debug_out(__VA_ARGS__)

#else

#define debug(...) 42

#endif



template<class T>

bool chmax(T &a, T b){if(a < b){a = b; return true;} return false;}

template<class T>

bool chmin(T &a, T b){if(a > b){a = b; return true;} return false;}

template<std::int_fast64_t Modulus>

class modint {

    using i64 = int_fast64_t;



    public:

    i64 a;



    constexpr modint(const i64 x = 0) noexcept {

        this -> a = x % Modulus;

        if(a < 0){

            a += Modulus;

        }

    }

    constexpr int getmod() { return Modulus; }

    constexpr modint operator - () const noexcept {

        return a ? Modulus - a : 0;

    }

    constexpr const i64 &value() const noexcept {return a;}

    constexpr modint operator+(const modint rhs) const noexcept {

        return modint(*this) += rhs;

    }

    constexpr modint operator-(const modint rhs) const noexcept {

        return modint(*this) -= rhs;

    }

    constexpr modint operator*(const modint rhs) const noexcept {

        return modint(*this) *= rhs;

    }

    constexpr modint operator/(const modint rhs) const noexcept {

        return modint(*this) /= rhs;

    }

    constexpr modint &operator+=(const modint rhs) noexcept {

        a += rhs.a;

        if(a >= Modulus) {

            a -= Modulus;

        }

        return *this;

    }

    constexpr modint &operator-=(const modint rhs) noexcept {

        if(a < rhs.a) {

            a += Modulus;

        }

        a -= rhs.a;

        return *this;

    }

    constexpr modint &operator*=(const modint rhs) noexcept {

        a = a * rhs.a % Modulus;

        return *this;

    }

    constexpr modint &operator/=(modint rhs) noexcept {

        i64 a_ = rhs.a, b = Modulus, u = 1, v = 0;

        while(b){

            i64 t = a_/b;

            a_ -= t * b; swap(a_,b);

            u -= t * v; swap(u,v);

        }

        a = a * u % Modulus;

        if(a < 0) a += Modulus;

        return *this;

    }

    

    // 自前実装

    constexpr bool operator==(const modint rhs) noexcept {

        return a == rhs.a;

    }

    constexpr bool operator!=(const modint rhs) noexcept {

        return a != rhs.a;

    }

    constexpr bool operator>(const modint rhs) noexcept {

        return a > rhs.a;

    }

    constexpr bool operator>=(const modint rhs) noexcept {

        return a >= rhs.a;

    }

    constexpr bool operator<(const modint rhs) noexcept {

        return a < rhs.a;

    }

    constexpr bool operator<=(const modint rhs) noexcept {

        return a <= rhs.a;

    }

    constexpr modint& operator++() noexcept {

        return (*this) += modint(1);

    }

    // constexpr modint operator++(int) {

    //     modint tmp(*this);

    //     operator++();

    //     return tmp;

    // }

    constexpr modint& operator--() noexcept {

        return (*this) -= modint(1);

    }

    // constexpr modint operator--(int) {

    //     modint tmp(*this);

    //     operator--();

    //     return tmp;

    // }

    template<typename T>

    friend constexpr modint modpow(const modint &mt, T n) noexcept {

        if(n < 0){

            modint t = (modint(1) / mt);

            return modpow(t, -n);

        }

        modint res = 1, tmp = mt;

        while(n){

            if(n & 1)res *= tmp;

            tmp *= tmp;

            n /= 2;

        }

        return res;

    }



    friend constexpr string to_string(const modint &mt) noexcept {

        return to_string(mt.a);

    }

};



// 標準入出力対応

template<std::int_fast64_t Modulus>

std::ostream &operator<<(std::ostream &out, const modint<Modulus> &m) {

    out << m.a;

    return out;

}

template<std::int_fast64_t Modulus>

std::istream &operator>>(std::istream &in, modint<Modulus> &m) {

    ll a;

    in >> a;

    m = modint<Modulus>(a);

    return in;

}



const ll MOD = 1e9+7;

// const ll MOD = 998244353;

using mint = modint<MOD>;



signed main(){

    cin.tie(nullptr);

    ios::sync_with_stdio(false);

    ll n; cin >> n;

    vector<ll> a(n);

    for(int i = 0; i < n; i++) cin >> a[i];

    vector<ll> pre(n, -1), last(n_max, -1);

    rep(i,0,n){

        pre[i] = last[a[i]];

        last[a[i]] = i;

    }

    vector<mint> dp(n+1);

    dp[0] = 1;

    rep(i,0,n){

        dp[i+1] += dp[i];

        if(pre[i] != -1 && pre[i] != i - 1)dp[i+1] += dp[pre[i] + 1];

    }



    cout << dp[n] << "\n";

}