#include <bits/stdc++.h>  // ver2.2.9
#define int long long
#define endl "\n"
#define ALL(v) (v).begin(),(v).end()
#define COUNT(a,k) upper_bound(ALL(a),k)-lower_bound(ALL(a),k)
#define BIGGER(a,k) a.end()-upper_bound(ALL(a),k)
#define SMALLER(a,k) lower_bound(ALL(a),k)-a.begin()
#define Vi vector<int>
#define VVi vector<Vi>
#define Vs vector<string>
#define Pii pair<int,int>
#define VPii vector<Pii>
#define Tiii tuple<int,int,int>
#define PQi priority_queue<int>
#define PQir priority_queue<int,vector<int>,greater<int>>
#define pb push_back
#define mp make_pair
#define mt make_tuple
#define itos to_string
#define stoi stoll
#define FI first
#define SE second
#define cYES cout<<"YES"<<endl
#define cNO cout<<"NO"<<endl
#define cYes cout<<"Yes"<<endl
#define cNo cout<<"No"<<endl
#define cyes cout<<"yes"<<endl
#define cno cout<<"no"<<endl
#define _ <<' '<<
#define sortr(v) sort(v,greater<>())
#define rep(i,a,b) for(int i=a;i<b;i++)
#define repeq(i,a,b) for(int i=a;i<=b;i++)
#define repreq(i,a,b) for(int i=a;i>=b;i--)
#define leng(n) (int)(log10(n)+1)
#define dem(a,b) ((a+b-1)/(b))
#define Vin(a) rep(iI,0,a.size())cin>>a[iI]
#define Vout(a) rep(lZ,0,a.size()-1)cout<<a[lZ]<<' ';cout<<a.back()<<endl
#define VVout(a) rep(lY,0,a.size()){if(!a[lY].empty()){Vout(a[lY]);}else cout<<endl;}
#define VPout(a) rep(lX,0,a.size())cout<<a[lX].FI<<' '<<a[lX].SE<<endl
#define Verr(a) rep(iZ,0,a.size()-1)cerr<<a[iZ]<<' ';cerr<<a.back()<<endl
#define VVerr(a) rep(J,0,a.size()){if(!a[J].empty()){Verr(a[J]);}else cerr<<'.'<<endl;}
#define VPerr(a) rep(iX,0,a.size())cerr<<a[iX].FI<<' '<<a[iX].SE<<endl
#define INF 3000000000000000000  //  3.0*10^18(MAXの1/3くらい)
#define MAX LLONG_MAX
#define MOD 1000000007  //  10^9 + 7
using namespace std;

int gcd(int a,int b){return b?gcd(b,a%b):a;}  //  最大公約数gcd
int lcm(int a,int b){return a/gcd(a,b)*b;}  //  最小公倍数lcm
int mypow(int x, int n, int m){  //  累乗x^n(mod m)  O(log(n))
if(n==0)return 1;if(n%2==0)return mypow(x*x%m,n/2,m);else return x*mypow(x,n-1,m)%m;}
int scomb(int n, int r){  //  nCr (小さい場合)
int a=1;for(int i=n;i>n-r;--i){a=a*i;}for(int i=1;i<r+1;++i){a=a/i;}return a;}
int comb(int n, int r){  //  nCr (%MOD)
int a=1;for(int i=n;i>n-r;--i){a=a*i%MOD;}for(int i=1;
i<r+1;++i){a=a*mypow(i,MOD-2,MOD)%MOD;}return a%MOD;}
int stpow(int n){  //  階乗(%MOD)
if(n==0)return 1;int a=1;rep(i,1,n+1)a=a*i%MOD;return a;}
Vi stpowV(){Vi a(100001);  //  階乗配列(%MOD)
a[0]=1;repeq(i,1,100000)a[i]=a[i-1]*i%MOD;return a;}
void press(auto &v){v.erase(unique(ALL(v)),v.end());}  //  圧縮



signed main() {
  cin.tie(0);cout.tie(0);ios::sync_with_stdio(false);cout<<fixed<<setprecision(12);
  int n,t;
  cin >> n >> t;
  Vi w(n),v(n);
  rep(i,0,n) cin >> w[i] >> v[i];
  VVi dp1(n+10,Vi(t+10));
  VVi dp2 = dp1;
  
  
  for (int i = 0; i < n; ++i) {
    for (int qw = 0; qw <= t; ++qw) {
      if (qw >= w[i]) dp1[i+1][qw] = max(dp1[i][qw-w[i]] + v[i], dp1[i][qw]);
      else dp1[i+1][qw] = dp1[i][qw];
    }
  }
  
  reverse(ALL(w));
  reverse(ALL(v));
  
  for (int i = 0; i < n; ++i) {
    for (int qw = 0; qw <= t; ++qw) {
      if (qw >= w[i]) dp2[i+1][qw] = max(dp2[i][qw-w[i]] + v[i], dp2[i][qw]);
      else dp2[i+1][qw] = dp2[i][qw];
    }
  }
  
  // dp1[n][t-1]
  reverse(ALL(v));
  
  int ans = 0;
  int memo;
  
  rep(i,0,n){
    rep(j,0,t){
      memo = dp1[i][j] + dp2[n-1-i][t-1-j];
      ans = max(ans,memo+v[i]);
    }
  }
  cout << ans << endl;
  return 0;
}

Measured memory_bytes: 142080