Find the total number of operations of the following pseudo code. Show your calculation for every line of the code (similar to Slide 19 of Lecture 1). Finally write the total number of operations by O notation.

for (i=0; i<=n; i++)

for (j=0; j<=i; j++)

x = x+y;

for (i=0; i<=1000*n; i++)

x = x+y;