0_0_38621163_25244.cpp: In constructor 'SegTree<Info, Tag>::SegTree(int, const std::vector<Info>&)':
0_0_38621163_25244.cpp:16:9: error: 'function' was not declared in this scope
function<void(int, int, int)> build = [&](int u, int l, int r) {
^~~~~~~~
0_0_38621163_25244.cpp:16:9: note: 'std::function' is defined in header '<functional>'; did you forget to '#include <functional>'?
0_0_38621163_25244.cpp:3:1:
+#include <functional>
using namespace std;
0_0_38621163_25244.cpp:16:9:
function<void(int, int, int)> build = [&](int u, int l, int r) {
^~~~~~~~
0_0_38621163_25244.cpp:16:18: error: expected primary-expression before 'void'
function<void(int, int, int)> build = [&](int u, int l, int r) {
^~~~
0_0_38621163_25244.cpp:26:9: error: there are no arguments to 'build' that depend on a template parameter, so a declaration of 'build' must be available [-fpermissive]
build(1, 1, n);
^~~~~
0_0_38621163_25244.cpp:26:9: note: (if you use '-fpermissive', G++ will accept your code, but allowing the use of an undeclared name is deprecated)
0_0_38621163_25244.cpp: In instantiation of 'SegTree<Info, Tag>::SegTree(int, const std::vector<Info>&) [with Info = Info; Tag = Tag]':
0_0_38621163_25244.cpp:113:40: required from here
0_0_38621163_25244.cpp:26:14: error: 'build' was not declared in this scope
build(1, 1, n);
~~~~~^~~~~~~~~
0_0_38621163_25244.cpp: In instantiation of 'void SegTree<Info, Tag>::pushdown(int, int, int) [with Info = Info; Tag = Tag]':
0_0_38621163_25244.cpp:52:9: required from 'void SegTree<Info, Tag>::modify(int, int, int, int, int, const Tag&) [with Info = Info; Tag = Tag]'
0_0_38621163_25244.cpp:62:9: required from 'void SegTree<Info, Tag>::modify(int, int, const Tag&) [with Info = Info; Tag = Tag]'
0_0_38621163_25244.cpp:118:39: required from here
0_0_38621163_25244.cpp:34:9: error: could not convert '((SegTree<Info, Tag>*)this)->SegTree<Info, Tag>::lazy.std::vector<Tag, std::allocator<Tag> >::operator[](((std::vector<Tag, std::allocator<Tag> >::size_type)u))' from '__gnu_cxx::__alloc_traits<std::allocator<Tag>, Tag>::value_type' {aka 'Tag'} to 'bool'
if (lazy[u]) {
^~
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