#pragma GCC optimize ("-O3","unroll-loops")
#include<iostream>
#include<string>
#include<algorithm>
#include<vector>
#include<queue>
#include<map>
#include<math.h>
#include<iomanip>
#include<set>
#include<numeric>
#include<cstring>
#include<cstdio>
#include<functional>
#include<bitset>
#include<limits.h>
#include<cassert>
#include<iterator>
#include<complex>
#include<stack>


#define REP(i, n) for(int i = 0;i < n;i++)
#define REPR(i, n) for(int i = n;i >= 0;i--)
#define FOR(i, m, n) for(int i = m;i < n;i++)
#define FORR(i, m, n) for(int i = m;i >= n;i--)
#define SORT(v, n) sort(v, v+n);
#define VSORT(v) sort(v.begin(), v.end());
#define REVERSE(v,n) reverse(v,v+n);
#define VREVERSE(v) reverse(v.begin(), v.end());
#define ll long long
#define pb(a) push_back(a)
#define m0(x) memset(x,0,sizeof(x))
#define print(x) cout<<x<<'\n';
#define pe(x) cout<<x<<" ";
#define lb(v,n) lower_bound(v.begin(), v.end(), n);
#define ub(v,n) upper_bound(v.begin(), v.end(), n);
#define int long long
#define all(x) (x).begin(), (x).end()
#define double long double

using namespace std;

template<class T> inline bool chmin(T& a, T b) {
	if (a > b) {
		a = b;
		return true;
	}
	return false;
}
template<class T> inline bool chmax(T& a, T b) {
	if (a < b) {
		a = b;
		return true;
	}
	return false;
}

int MOD = (ll)1000000000 + 7;
const ll INF = 1e17;
const double pi = acos(-1);
const double EPS = 1e-10;
typedef pair<int, int>P;
const int MAX = 200020;

long long fac[MAX], finv[MAX], inv[MAX];

// テーブルを作る前処理
void COMinit() {
	fac[0] = fac[1] = 1;
	finv[0] = finv[1] = 1;
	inv[1] = 1;
	for (int i = 2; i < MAX; i++) {
		fac[i] = fac[i - 1] * i % MOD;
		inv[i] = MOD - inv[MOD%i] * (MOD / i) % MOD;
		finv[i] = finv[i - 1] * inv[i] % MOD;
	}
}

// 二項係数計算
long long COM(int n, int k) {
	if (n < k) return 0;
	if (n < 0 || k < 0) return 0;
	return fac[n] * (finv[k] * finv[n - k] % MOD) % MOD;
}
ll add(ll x, ll y) {
	x += y;
	if (x >= MOD) return x - MOD;
	return x;
}
ll sub(ll x, ll y) {
	x -= y;
	if (x < 0) return x + MOD;
	return x;
}

ll mult(ll x, ll y) {
	return (x * y) % MOD;
}
ll bin_pow(ll x, ll p) {
	if (p == 0) return 1;
	if (p & 1) return mult(x, bin_pow(x, p - 1));
	return bin_pow(mult(x, x), p / 2);
}
ll dp[303][50000];
vector<int>v;
int N, K;
ll cum[303][500000];
signed main() {
	cin.tie(0);
	ios::sync_with_stdio(false);

	cin >> N >> K;
	REP(i, N) {
		int a; cin >> a;
		v.pb(a);
	}
	VSORT(v); VREVERSE(v);
	dp[1][0] = 1;
	FOR(j,1, K + 2)cum[1][j] = 1;
	int cnt = 0;
	FOR(i, 1, N) {
		if (v[i] < v[i - 1])cnt++;
		
		REP(j, K + 1) {
			int res = 0;
			int counter = min(cnt + 1, j+1);
			if (counter == j + 1) {
				res = cum[i][j+1];
			}
			else {
				res = sub(cum[i][j+1], cum[i][j - cnt]);
			}
			/*REP(k, counter) {
				res =add(res, dp[i][j - k]);
			}*/
			dp[i + 1][j] = res;
			//pe(i + 1)pe(j)print(res);
		}
		cum[i + 1][1] = dp[i + 1][0];
		FOR(j, 1, K + 1) {
			cum[i + 1][j+1] = cum[i + 1][j ] + dp[i + 1][j];
			cum[i + 1][j+1] %= MOD;
		}
	}
	ll ans = 0;
	REP(j, K + 1){
		ans = add(ans,dp[N][j]);
	}
	print(ans);
}