codeforces346 Div.2 A.Round House

课间水一水，CCF备战

 package com.company.cf346;

 import java.io.InputStreamReader;
 import java.util.Scanner;

 /**
  * Created by Admin on 2016/4/5.
  */
 public class a {
     public static void main(String[] args){
         Scanner sc = new Scanner(new InputStreamReader(System.in));
         int n, a, b;
         n = sc.nextInt();
         a = sc.nextInt();
         b = sc.nextInt();
         int ans = 0;
         if(b < 0){
             while(b < 0){
                 b = b + n;
             }
             b = b % n;
             ans = (a + b) % n;
         }else {
             ans = (a + b) % n;
         }
         if(ans == 0)
             ans = n;
         System.out.println(ans);
     }
 }