Of course, as n is very large(10^6) the good approach is to use segment tree to store intervals, and also to use lazy propagation to update the tree in log n. But I actually really don't know how to apply lazy propagation here, because you have to keep into account three possible ...
Hello, I'd like to share a cool trick, i came across recently. No doubt some people will be familiar with this, but i believe many won't be, simply because when it comes to Lazy Propagation most people use segment trees in contest. This method, although not as flexible, is far ...
I am learning segment tree with lazy propagation but i can't find good tutorial. Can anyone post a code that implements this two operation with segment tree and lazy propagation: a-add a value to every element in a interval b-get the. sum of interval. Thanks in advance....
seg_tree_lazy<node,update>st(N,{0,0},{false,0}); Then, we set the leaf values: vector<node>leaves(N,{0,1});st.set_leaves(leaves); And we're done! With this example we can see the power of modularization; the amount of code we had to touch is very small. You can see the...
I'm learning segment tree data structure and I've learned the (Build, update, query) functions,and I'm trying to make an update on an interval using lazy propagation algorithm but I can't find the correct implementation of it. Would you please provide me with the correct code of lazy ...
For this problem i have to do 3 kinds of update in Segment Tree.http://uva.onlinejudge.org/index.php?option=com_onlinejudge&Itemid=8&category=279&page=show_problem&problem=3867 To make it in time , i need to use Lazy Propagation. But how to handle all 3 update in lazy propagation ...