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

// The main method must be in a class named "Main".
class Main {
    public static void main(String arg[]){

        // Problem2_1
        int a1 = 5,b1 = 3;
        System.out.println("a1 = " + a1);
        System.out.println("b1 = " + b1);
        System.out.println(a1+ " + " + b1 + " = " + (a1 + b1));

        // Problem2_2
        int a = 1,b = 2,c = 3,d = 4,e = 5;
        a += 2;  //  aに2を加える
        b -= 1;  //  bから1を引く
        c *= 3;  //  cに3をかける
        d /= 2;  //  dを2で割る
        e %= 2;  //  eに、eを2で割った余りを代入する
        System.out.println("a = " + a);
        System.out.println("b = " + b);
        System.out.println("c = " + c);
        System.out.println("d = " + d);
        System.out.println("e = " + e);
    }
}