Find the number of points (x,y) in square lattice with x^2 + y^2 =< n. This is related to Jame's Problem 1387. Here you have to find the number of points within a circle.
1679 Solvers
1507 Solvers
Find the sum of the elements in the "second" diagonal
841 Solvers
Who knows the last digit of pi?
467 Solvers
222 Solvers