(SPOJ) 19987 - Ansiedade - 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 {
        BufferedReader br = new BufferedReader(new InputStreamReader(System.in));
        BufferedWriter bw = new BufferedWriter(new OutputStreamWriter(System.out));
       
        String line = "";
       
        int contaTriagem = 0;
        while ((line = br.readLine()) != null) {
            int contaSim = 0;
            for (int i = 0; i < 10; i++) {
                if (line.equals("sim")) {
                    contaSim++;          
                }
                if (i < 9) {
                    line = br.readLine();
                }
            }
           
            if (contaSim >= 2) {
                contaTriagem++;
            }
        }
       
        bw.write(contaTriagem + "\n");
                                  
        bw.flush();
        bw.close();           
        return;
    }
}