public class ZeroOneTriangle {
public static void main(String args []) {
int n = 5;
for(int i = 1; i <= n; i++) {
for(int j = 1; j <= i; j++){
int sum = i+j;
if (sum % 2 == 0)
{
System.out.print("1");
}
else
{
System.out.print("0");
}
}
System.out.println();
}
}
}
