class Expr0 {

public static void main(String[] args) {

int x = 0;

if (x++ == 0) {

System.out.println(x);

}

System.out.println(x);

int y = 0;

if (++y == 1) {

System.out.println(y);

}

System.out.println(y);

int z = 0;

if (--z == -1) {

System.out.println(z);

}

System.out.println(z);

int w = 0;

if (w-- == 0) {

System.out.println(w);

}

System.out.println(w);

for (int i = 0; i<3; ++i) {

System.out.println(i);

}

}

}