CHEFMOVR Partial Correct

I’m getting WA in task# 3 and 4. Any help would be highly appreciated.
Link to code: Solution: 15021403 | CodeChef

These are the test cases I used for testing and seem to get the right output everytime.

8

5 2

1 4 5 2 3

3 1

1 4 1

4 2

3 4 3 5

5 3

1 2 2 3 2

4 3

3 2 2 1

5 1

2 2 2 2 2

5 1

1 2 3 7 2

5 1

1 1 1 1 6

The elements in the vectors are overflowing. Change them to “long long int” from “int”