Problem	sum2
User	Yinnotayl64
Submission Time	2026-06-28 11:43:35
Score	0
Max Time	N/A
Max Memory	N/A

Compile Error

sum2.cpp: In function ‘int main()’:
sum2.cpp:9:9: error: ‘in’ was not declared in this scope; did you mean ‘n’?
9 | vector<in> a(n);
| ^~
| n
sum2.cpp:9:11: error: template argument 1 is invalid
9 | vector<in> a(n);
| ^
sum2.cpp:9:11: error: template argument 2 is invalid
sum2.cpp:10:17: error: ‘begin’ was not declared in this scope
10 | for (auto &it: a) cin >> it;
| ^
sum2.cpp:10:17: note: suggested alternatives:
In file included from /usr/include/x86_64-linux-gnu/c++/9/bits/stdc++.h:95,
from sum2.cpp:1:
/usr/include/c++/9/valarray:1224:5: note: ‘std::begin’
1224 | begin(const valarray<_Tp>& __va)
| ^~~~~
In file included from /usr/include/c++/9/filesystem:38,
from /usr/include/x86_64-linux-gnu/c++/9/bits/stdc++.h:129,
from sum2.cpp:1:
/usr/include/c++/