int maxProfit(int k, vector<int> &prices) {
if (prices.empty()) return 0;
if (k >= prices.size()) return quickSolve(prices);
int g[k + 1] = {0};
int l[k + 1] = {0};
for (int i = 1; i < prices.size(); ++i) {
int diff = prices[i] - prices[i-1];
for (int j = k; j >= 1; --j) {
l[j] = max(g[j - 1] + max(diff, 0), l[j] + diff);
g[j] = max(g[j], l[j]);
}
}
return g[k];
}
int maxProfit(int k, vector<int>& prices) {
if(k >= prices.size() / 2){
return quickSolve(prices);
}
vector<vector<int>> local;
vector<vector<int>> global;
for(int i = 0; i < prices.size(); i++){
vector<int> v(k+1, 0);
local.push_back(v);
global.push_back(v);
}
for(int j = 1; j <= k; j++){
for(int i = 1; i < prices.size(); i++){
int diff = prices[i] - prices[i - 1];
local[i][j] = max(global[i-1][j-1] + max(diff, 0), local[i-1][j] + diff);
global[i][j] = max(global[i-1][j], local[i][j]);
}
}
return global[prices.size()-1][k];
}