class Solution {
public:
int maxProfit(vector
// Start typing your C/C++ solution below
// DO NOT write int main() function
int prevIdx = 0;
int res = 0;
for (int i = 1; i < a.size(); ++i)
{
{
res += a[i] - a[prevIdx];
}
prevIdx = i;
}
return res;
}
};