Things were going great in the sense that breakpoints always landed in "roughly" the right spot. But the state it was in made it impossible to add new features, deprecate old behaviors, or correct ambiguity.
int randomIdx = low + rand() % (high - low + 1);，详情可参考wps
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Первое свидание двух коллег закончилось за считанные минуты по неожиданной причине02:30