Parts:       r,
			}
		}
		// Simple useful utilities
		repeat = func(k int64, n int) []int64 {
			a := []int64{}
			for i := 0; i < n; i++ {
				a = append(a, k)
			}
			return a
		}
		lsum = func(s []int64) int64 {
			sum := int64(0)
			for _, i := range s {
				if i < 0 {
					return -1
				}
				sum += i
			}
			return sum
		}
		esum = func(oi ObjectInfo) int64 {