#include #include #include #include #include #include #include #include #include #include #include #include #include #define debug_value(x) cerr << "line" << __LINE__ << ":<" << __func__ << ">:" << #x << "=" << x << endl; #define debug(x) cerr << "line" << __LINE__ << ":<" << __func__ << ">:" << x << endl; template inline bool chmax(T& a, T b) { if (a < b) { a = b; return 1; } return 0; } template inline bool chmin(T& a, T b) { if (a > b) { a = b; return 1; } return 0; } using namespace std; typedef long long ll; template vector> vec2d(int n, int m, T v){ return vector>(n, vector(m, v)); } template vector>> vec3d(int n, int m, int k, T v){ return vector>>(n, vector>(m, vector(k, v))); } template void print_vector(vector v, char delimiter=' '){ if(v.empty()) { cout << endl; return; } for(int i = 0; i+1 < v.size(); i++) cout << v[i] << delimiter; cout << v.back() << endl; } int main(){ ios::sync_with_stdio(false); cin.tie(0); cout << setprecision(10) << fixed; int n, I; cin >> n >> I; vector s(n), a(n); for(int i = 0; i < n; i++) cin >> s[i] >> a[i]; auto dp = vec2d(n+1, I+1, 0); for(int i = 0; i < n; i++){ for(int j = 0; j <= I; j++){ chmax(dp[i+1][j], dp[i][j]); if(j+s[i] <= I) chmax(dp[i+1][j+s[i]], dp[i][j]+a[i]); } } cout << *max_element(dp[n].begin(), dp[n].end()) << endl; }