for s in[*open(0)][1:]:n,k=map(int,s.split());print(n*k-k+1)377. Combination Sum IV | 322. Coin Change |
307. Range Sum Query - Mutable | 287. Find the Duplicate Number |
279. Perfect Squares | 275. H-Index II |
274. H-Index | 260. Single Number III |
240. Search a 2D Matrix II | 238. Product of Array Except Self |
229. Majority Element II | 222. Count Complete Tree Nodes |
215. Kth Largest Element in an Array | 198. House Robber |
153. Find Minimum in Rotated Sorted Array | 150. Evaluate Reverse Polish Notation |
144. Binary Tree Preorder Traversal | 137. Single Number II |
130. Surrounded Regions | 129. Sum Root to Leaf Numbers |
120. Triangle | 102. Binary Tree Level Order Traversal |
96. Unique Binary Search Trees | 75. Sort Colors |
74. Search a 2D Matrix | 71. Simplify Path |
62. Unique Paths | 50. Pow(x, n) |
43. Multiply Strings | 34. Find First and Last Position of Element in Sorted Array |