(SPOJ) 8698 - Garçom - Solução

import java.io.*;
import java.util.*;

class Main {
    public static void main(String[] args) throws NumberFormatException, IOException {
        Main processando = new Main();
        processando.processa();
       
        System.exit(0);
    }
   
    void processa() throws NumberFormatException, IOException {
        String line = "";
       
        BufferedReader br = new BufferedReader(new InputStreamReader(System.in));

        line = br.readLine();
        StringTokenizer tokenizer = new StringTokenizer(line);
        int bandejas = Integer.valueOf(tokenizer.nextToken());
       
        int soma = 0;       
        for (int i = 0; i < bandejas; i++) {
            line = br.readLine();
            tokenizer = new StringTokenizer(line);

            int latas = Integer.valueOf(tokenizer.nextToken());
            int copos = Integer.valueOf(tokenizer.nextToken());
           
            if (latas > copos) {
                soma += copos;
            }
        }       

        System.out.println(soma);
                                           
        return;
    }
}