google codejam 15 - qualification round - problemA - standing ovation

ProblemA.java

import java.io.BufferedReader;
import java.io.IOException;
import java.io.InputStreamReader;

/**
 *  @author mtk - Mohammed Tareque Khan
 *  More details: http://mtktechiecode.blogspot.in/2015/04/google-codejam-15-standing-ovation.html
 *  
 *  Algo description:
 *  if number of people for next shynesslevel is not zero then:
 *     if totalStandingPeopleYet >= next shynessLevel
 *     then: 
 *         All good, carry on, no friend to add
 *     else
 *         add next-shynesslevel - totalStandingPeopleYet number of friend
 *         so that they trigger the next shyness level people to stand up
 *         as the goal is to achieve a complete standing ovation
 *  
 * */
public class ProblemA {
  int smax;
  int friendsAdded;
  int totalStandingYet;
  String numOfPeopleAtShynessLevels;
  
  public ProblemA() {
    numOfPeopleAtShynessLevels="";
    smax=0;
    totalStandingYet=0;
    friendsAdded=0;
  }
  public static void main(String[] args) throws IOException {
    BufferedReader br = new BufferedReader(new InputStreamReader(System.in));
    String s;
    int caseNo = 1, T = Integer.parseInt(br.readLine());
    
    while(caseNo <= T ){
      ProblemA probA = new ProblemA();
      s = br.readLine();
      probA.smax = Integer.parseInt(s.split(" ")[0]);
      probA.numOfPeopleAtShynessLevels = s.split(" ")[1];
      probA.totalStandingYet=Integer.parseInt(probA.numOfPeopleAtShynessLevels.charAt(0) + "");

      // starting for index 1 and considering it as next-shynessLevel
      for(int nextShynessLevel=1; nextShynessLevel <= probA.smax; nextShynessLevel++) {
        int numberOfPeopleAtNextShynessLevel = probA.getNumberOfPeopleAtShynessLevel(i);
        if(numberOfPeopleAtNextShynessLevel != 0) {
          // System.out.println("Number of people at next level is " + numberOfPeopleAtNextShynessLevel);
          if(probA.totalStandingYet >= nextShynessLevel) {
            probA.totalStandingYet += numberOfPeopleAtNextShynessLevel ;
          } else {
            int friendsToAdd = nextShynessLevel - probA.totalStandingYet;
            probA.friendsAdded  += friendsToAdd;
            probA.totalStandingYet += numberOfPeopleAtNextShynessLevel  + friendsToAdd;
          }
        }
      }
      System.out.println("Case #" + caseNo++ +": " + probA.friendsAdded);
    }
  }
  int getNumberOfPeopleAtShynessLevel(int i) {
    return Integer.parseInt(this.numOfPeopleAtShynessLevels.charAt(i) + "");
  }
}