(SPOJ) 11003 - Pulo do sapo - 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);
    }
   
    static int leitor(BufferedReader br) throws NumberFormatException, IOException {
        int n;
        int resp = 0;
        while (true) {
            n = br.read();
            if (n >= '0' && n <= '9') {
                break;
            }
        }
        while (true) {
            resp = resp*10 + n-'0';
            n = br.read();
            if (n < '0' || n > '9') {
                break;
            }
        }
        return resp;
    }
   
    void processa() throws NumberFormatException, IOException {
        BufferedReader br = new BufferedReader(new InputStreamReader(System.in));
        BufferedWriter bw = new BufferedWriter(new OutputStreamWriter(System.out));

        int qteEspacos = leitor(br);
        int numSapos = leitor(br);
       
        int[] brejo = new int[qteEspacos];
       
        for (int i = 0; i < numSapos; i++) {       
            int posicao = leitor(br);
            int tamPulo = leitor(br);
           
            for (int j = posicao-1; j < qteEspacos; j += tamPulo) {
                brejo[j] = 1;
            }
            for (int j = posicao-1; j >= 0; j -= tamPulo) {
                brejo[j] = 1;
            }
        } 
       
        for (int i = 0; i < qteEspacos; i++) {
            bw.write(brejo[i]+"\n");
        }
       
        bw.flush();
        bw.close();
        return;
    }
}