Problem	01knapsack
User	pasit
Submission Time	2026-07-19 01:08:24
Score	0
Max Time	N/A
Max Memory	N/A

Compile Error

01knapsack.cpp:11:1: error: ‘concept’ does not name a type
11 | concept is_iterable = requires(T &&x) { begin(x); } && !is_same_v<remove_cvref_t<T>, string>;
| ^~~~~~~
01knapsack.cpp:11:1: note: ‘concept’ only available with ‘-fconcepts’
01knapsack.cpp:11:56: error: expected unqualified-id before ‘!’ token
11 | concept is_iterable = requires(T &&x) { begin(x); } && !is_same_v<remove_cvref_t<T>, string>;
| ^
01knapsack.cpp: In function ‘void __DEBUG_UTIL__::print(T&&)’:
01knapsack.cpp:25:19: error: ‘is_iterable’ was not declared in this scope
25 | if constexpr (is_iterable<T>)
| ^~~~~~~~~~~
01knapsack.cpp:25:32: error: expected primary-expression before ‘>’ token
25 | if constexpr (is_iterable<T>)
| ^
01knapsack.cpp:25:33: error: expected primary-expression befo