Part $2$: DVC Schedule Check

Each section$-$term combination is supposed to be unique $--$ that is$,$ there should never be two separate entries with the same section and term, with different course names. It's okay for COMSC$-210-8301$ in SP$2016$ to appear more than once $--$ that's a duplicate and we already skip the extra entries. But it's NOT ok to have both COMSC$-210-8301$ and CNT$-120-8301$ in SP$2016.$ There can be "cross$-$listed" courses, like ARCHI$-126$ and ENGIN$-126$ in Fall $2013$ in the same room at the same time with the same instructor $($Tumlin$,$ MW $6$:$00-8$:$50$pm ET$-124),$ but they always have different section numbers, like ARCHI$-126-8349$ and ENGIN$-126-8346.$

The DVC Admissions Office suspects that there are at least a few such invalid entries in their database, but their staff is having trouble using Excel to locate them. They heard about what we are studying in COMSC$-210,$ and they want to know if we can help determine if there are any such entries, and what they are.

Write DvcScheduleCheck.cpp to solve the problem. Output how many term$-$section pairs there are with multiple courses associated with them. If there are none, output a message to that effect. But if there are any, output each of them in a format that you think DVC Admissions would understand and find useful. Here is the sample output Download outputusing the DVCSchedule.txt file we use this semester.