Butun sonlar K va N berilgan (K ≤ N). K² + (K+1)² + … + N² yig'indisini toping.
K
N
K ≤ N
K² + (K+1)² + … + N²
func sumSquares(K int, N int) int { // ... }
Input: K=1, N=5 Output: 55
Input: K=3, N=6 Output: 86
Input: K=2, N=4 Output: 29