#include <algorithm>
#include <iostream>
#include <queue>
#include <vector>

using namespace std;

typedef long long ll;

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

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

vector<int> v;
vector<int> w;
vector<int> m;
vector<int> dp1, dp2;

// {quantity, value}
deque<pair<int, int>> q;

int solve(const int N, const int W) {
    for (int i = 1; i <= N; i++) {
        for (int r = 0; r < w[i]; r++) {
            q.clear();
            for (int j = 0; j * w[i] + r <= W; j++) {
                int a = dp1[j * w[i] + r];
                int b = a - j * v[i];
                while (!q.empty()) {
                    int val = q.back().second;
                    if (val <= b) {
                        q.pop_back();
                    } else {
                        break;
                    }
                }
                q.push_back({j, b});
                dp2[j * w[i] + r] = q.front().second + j * v[i];
                if (q.front().first == j - m[i]) {
                    q.pop_front();
                }
            }
        }
        dp1 = dp2;
    }
    return dp2[W];
}

int main(void) {
    int N, W;
    cin >> N >> W;

    v.resize(N + 1);
    w.resize(N + 1);
    m.resize(N + 1);
    for (int i = 0; i < N; i++) {
        cin >> v[i + 1] >> w[i + 1] >> m[i + 1];
    }

    dp1.resize(W + 1, 0);
    dp2.resize(W + 1, 0);
    cout << solve(N, W) << endl;

    return 0;
}

