help me to write c code

Circular Sequence Shifting Medium AC Ratio: 21.1% (487/2313) #Expression There are n students and exactly n chairs in a class. Both of them are numbered from 0 to n-1. The students take their seats according to their number. In class, the teacher asks each student to move x seats to the right side. Then we can know that the student numbered a will sit at the position of number b after shifting. For example, there are 10 students and 10 seats, student numbered 2 shifting 5 seats will sit on position of number 7.