Time optimization issues between Debug and release

Recently ran a vibe code, which added a phrase to the vector declaration:

Vector<int> Binary_delete1,binary_delete2,binary_delete3;

Then the program will become very slow, the problem is a headache.

After the discovery is in the debug mode, the debug mode of the system time in many cases is not made any optimization, so we use this mode is unreasonable. Later, after the change to release, it was found that regardless of adding this statement, the program will be carried out quickly, so you can find the difference between release and Debug. Of course, release also has its own problems, can not be in the debugging time to view the value of variables, became the mishap of release, hehe.

Time optimization issues between Debug and release