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| ID | Problem | Submitter | Result | Time | Memory | Language | File size | Submit time | Judge time |
|---|---|---|---|---|---|---|---|---|---|
| #456966 | #7276. A Light Inconvenience | yoy68 | Compile Error | / | / | C++14 | 831b | 2024-06-28 19:06:05 | 2024-06-28 19:06:52 |
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Details
implementer.cpp:17:22: error: ‘optional’ does not name a type
17 | template<typename T> optional<T> read() {
| ^~~~~~~~
implementer.cpp: In function ‘int main()’:
implementer.cpp:36:17: error: ‘optional’ was not declared in this scope
36 | optional<long long> d = read<long long>();
| ^~~~~~~~
implementer.cpp:36:17: note: ‘std::optional’ is only available from C++17 onwards
implementer.cpp:36:26: error: expected primary-expression before ‘long’
36 | optional<long long> d = read<long long>();
| ^~~~
implementer.cpp:37:24: error: ‘d’ was not declared in this scope
37 | if(not d or *d == 0)
| ^