Serial Topic Problem Link Time Status Approach tags
1 STL Vector https://leetcode.com/problems/can-make-arithmetic-progression-from-sequence/description/
2 STL Vector https://www.hackerearth.com/practice/data-structures/trees/binary-search-tree/practice-problems/algorithm/distinct-count/submissions/
3 STL String https://codeforces.com/problemset/problem/118/A
4 STL String https://lightoj.com/problem/discovering-permutations
5 STL Pair https://codeforces.com/problemset/problem/166/A
6 STL Map https://atcoder.jp/contests/arc087/tasks/arc087_a
7 STL Map https://codeforces.com/contest/903/problem/C
8 STL Set https://leetcode.com/problems/contains-duplicate/description/?fbclid=IwZXh0bgNhZW0CMTAAAR2E2AwpXxW8PNJel2IKp66O-W2YXoInwsuAay5Zs4EcqR-mvWA3XmmiiIU_aem_A7KQdblLcorafVnnrXiYlA
9 STL Set https://www.spoj.com/problems/ADAFIELD/
10 STL Set https://codeforces.com/contest/900/problem/C
11 STL Map https://codeforces.com/contest/799/problem/B
12 STL Map https://codeforces.com/contest/903/problem/C
13 STL Multiset https://leetcode.com/problems/baseball-game/description/?fbclid=IwAR3_AVk3GIc7_ThVoeZVeIHHlPuFIrb_HTpaFD_WHsJbrQy4rKmhmr9BfFw
14 STL Queue https://codeforces.com/contest/920/problem/B
15 STL P. Queue https://codeforces.com/contest/799/problem/B?fbclid=IwAR3_AVk3GIc7_ThVoeZVeIHHlPuFIrb_HTpaFD_WHsJbrQy4rKmhmr9BfFw
16 Bit Manipulation https://codeforces.com/contest/1527/problem/A
17 Bit Manipulation https://codeforces.com/contest/579/problem/A
18 Bit Manipulation https://codeforces.com/contest/467/problem/B
19 Bit Manipulation https://codeforces.com/contest/1514/problem/B
20 Bit Manipulation https://codeforces.com/contest/1420/problem/B
21 Bit Manipulation https://www.hackerearth.com/problem/algorithm/hamming-sort-09045827/ 00.20.00 AC XOR operation and count of set bit and the sort is the answer. bit
22 Bit Manipulation https://www.hackerearth.com/problem/algorithm/parity-binary-sort-ea768e57/ 00.05.00 AC count of even number of set bit then sort them same with the odd number of set bit. and print to get answer. bit
23 Bit Manipulation https://www.hackerearth.com/problem/algorithm/range-queries-7-0a9ff8eb/ 01.10.00 AC A dp to maintain all the numbers bit and prefix sum for every bit up to 20 length. then simple O(1) operation to get the answer. bit. dp
24 Bit Manipulation https://www.hackerearth.com/problem/algorithm/bitwisebafflement-00eabd02/
25 Bit Manipulation https://www.hackerearth.com/problem/algorithm/bitwisebizarro-d932b3c7/
26 Bit Manipulation https://www.hackerearth.com/problem/algorithm/help-alice-to-find-the-parity-f65a1d30/
27 Bit Manipulation https://www.hackerearth.com/problem/algorithm/count-subarrays-3-ba2ff701/
28 Bit Manipulation https://www.hackerearth.com/problem/algorithm/twin-strings-c1911e65/
29 Bit Manipulation https://www.hackerearth.com/problem/algorithm/subarray-3-3dbc3f50/
30 Bit Manipulation https://www.hackerearth.com/problem/algorithm/xor-pairs-4-ae23b208/
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