0751-0760 751. IP to CIDR $\star$ 752. Open the Lock $\star\star$ 753. Cracking the Safe $\star\star\star$ 754. Reach a Number $\star\star$ 755. Pour Water $\star\star$ 756. Pyramid Transition Matrix $\star\star$ 757. Set Intersection Size At Least Two $\star\star\star$ 758. Bold Words in String $\star$ 759. Employee Free Time $\star\star\star$ 760. Find Anagram Mappings $\star$