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Hard

Problems with tag Hard

783 found, showing 60 to 90

3

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;

Closest Room ->

Hard, #1847, 3 solutions

Closest Subsequence Sum ->

Hard, #1755, 3 solutions

Collect Coins in a Tree ->

Hard, #2603, 2 solutions

Concatenated Words ->

Hard, #472, 3 solutions

Coins in a Line III ->

Hard, #396, 1 solutions

Consecutive Numbers Sum ->

Hard, #829, 2 solutions

Consecutive Transactions with Increasing Amounts ->

Hard, #2701, 1 solutions

->

Hard, 1 solutions

Constrained Subset Sum ->

Hard, #1425, 2 solutions

Construct Target Array With Multiple Sums ->

Hard, #1354, 2 solutions

Contain Virus ->

Hard, #749, 2 solutions

Contains Duplicate III ->

Hard, #220, 4 solutions

Color the Triangle Red ->

Hard, #2647, 2 solutions

Coin Path ->

Hard, #656, 2 solutions

Confusing Number II ->

Hard, #1088, 2 solutions

Copy Books ->

Hard, #437, 1 solutions

Convert Expression to Reverse Polish Notation ->

Hard, #370, 1 solutions

Count All Possible Routes ->

Hard, #1575, 2 solutions

Convert Expression to Polish Notation ->

Hard, #369, 1 solutions

Convert JSON String to Object ->

Hard, #2759, 1 solutions

Count Array Pairs Divisible by K ->

Hard, #2183, 2 solutions

Copy List with Random Pointer ->

Medium, #138, 6 solutions

Count All Valid Pickup and Delivery Options ->

Hard, #1359, 2 solutions

Count Anagrams ->

Hard, #2514, 2 solutions

Count Fertile Pyramids in a Land ->

Hard, #2088, 2 solutions

Count Good Triplets in an Array ->

Hard, #2179, 2 solutions

Count Beautiful Substrings II ->

Hard, #2949, 2 solutions

Count Complete Substrings ->

Hard, #2953, 2 solutions

Count Houses in a Circular Street II ->

Hard, #2753, 2 solutions

Count Different Palindromic Subsequences ->

Hard, #730, 3 solutions