1311-1320

1311. Get Watched Videos by Your Friends $\star\star$

1312. Minimum Insertion Steps to Make a String Palindrome $\star\star\star$

1313. Decompress Run-Length Encoded List $\star$

1314. Matrix Block Sum $\star\star$

1315. Sum of Nodes with Even-Valued Grandparent $\star\star$

1316. Distinct Echo Substrings $\star\star\star$

1317. Convert Integer to the Sum of Two No-Zero Integers $\star$

1318. Minimum Flips to Make a OR b Equal to c $\star\star$

1319. Number of Operations to Make Network Connected $\star\star$

1320. Minimum Distance to Type a Word Using Two Fingers $\star\star\star$