#include using namespace std; #define rep(i,n) for(ll i=0;i=0;i--) #define perl(i,r,l) for(ll i=r-1;i>=l;i--) #define fi first #define se second #define pb push_back #define ins insert #define pqueue(x) priority_queue,greater> #define all(x) (x).begin(),(x).end() #define CST(x) cout<> #define rev(x) reverse(x); using ll=long long; using vl=vector; using vvl=vector>; using pl=pair; using vpl=vector; using vvpl=vector; const ll MOD=1000000007; const ll MOD9=998244353; const int inf=1e9+10; const ll INF=4e18; const ll dy[9]={0,-1,0,1,1,1,-1,-1,0}; const ll dx[9]={-1,0,1,0,1,-1,1,-1,0}; template inline bool chmin(T& a, T b) { if (a > b) { a = b; return true; } return false; } template inline bool chmax(T& a, T b) { if (a < b) { a = b; return true; } return false; } int main(){ ll n,k;cin >> n >> k; vector v(n); rep(i,n)cin >> v[i].first >> v[i].second; sort(all(v));rev(all(v)); vvl dp(5050,vl(2,-INF));//値段がj、無料券が残ってるか dp[0][0]=0; rep(i,n){ vvl ndp(5050,vl(2,-INF)); rep(j,5050){ chmax(ndp[j][0],dp[j][0]); if(j+v[i].first<5050)chmax(ndp[j+v[i].first][1],dp[j][0]+v[i].second); chmax(ndp[j][1],dp[j][1]); chmax(ndp[j][0],dp[j][1]+v[i].second); } swap(dp,ndp); } ll ans=0; for(ll i=0;i<=k;i++){ chmax(ans,dp[i][0]); chmax(ans,dp[i][1]); } cout << ans << endl; }