# 06.12.2025
[3578. Count Partitions With Max-Min Difference at Most K](https://leetcode.com/problems/count-partitions-with-max-min-difference-at-most-k/description/) medium
Ways to partition into parts (max-min) at most k #medium #dp #monotonic_queue
[3578. Count Partitions With Max-Min Difference at Most K](https://leetcode.com/problems/count-partitions-with-max-min-difference-at-most-k/description/) medium
Ways to partition into parts (max-min) at most k #medium #dp #monotonic_queue
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# 07.12.2025
[1523. Count Odd Numbers in an Interval Range](https://leetcode.com/problems/count-odd-numbers-in-an-interval-range/description/) easy
Odds l..h #easy
[1523. Count Odd Numbers in an Interval Range](https://leetcode.com/problems/count-odd-numbers-in-an-interval-range/description/) easy
Odds l..h #easy
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# 08.12.2025
[1925. Count Square Sum Triples](https://leetcode.com/problems/count-square-sum-triples/description/) easy
Count a^2+b^2=c^2 in 1..n range #easy
[1925. Count Square Sum Triples](https://leetcode.com/problems/count-square-sum-triples/description/) easy
Count a^2+b^2=c^2 in 1..n range #easy
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# 09.12.2025
[3583. Count Special Triplets](https://leetcode.com/problems/count-special-triplets/description) medium
Count a[i]==a[j]*2==a[k] #medium #prefix_sum
[3583. Count Special Triplets](https://leetcode.com/problems/count-special-triplets/description) medium
Count a[i]==a[j]*2==a[k] #medium #prefix_sum
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# 10.12.2025
[3577. Count the Number of Computer Unlocking Permutations](https://leetcode.com/problems/count-the-number-of-computer-unlocking-permutations/) medium
Permutations to unlock all c[j] right and bigger than c[i] #medium #combinatorics
[3577. Count the Number of Computer Unlocking Permutations](https://leetcode.com/problems/count-the-number-of-computer-unlocking-permutations/) medium
Permutations to unlock all c[j] right and bigger than c[i] #medium #combinatorics
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# 11.12.2025
[3531. Count Covered Buildings](https://leetcode.com/problems/count-covered-buildings/description/) medium
Count surrounded dots on XY plane #medium
[3531. Count Covered Buildings](https://leetcode.com/problems/count-covered-buildings/description/) medium
Count surrounded dots on XY plane #medium
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# 12.12.2025
[3433. Count Mentions Per User](https://leetcode.com/problems/count-mentions-per-user/description) medium
Count messages and track online users #medium #simulation
[3433. Count Mentions Per User](https://leetcode.com/problems/count-mentions-per-user/description) medium
Count messages and track online users #medium #simulation
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# 13.12.2025
[3606. Coupon Code Validator](https://leetcode.com/problems/coupon-code-validator/description/) easy
Filter a,b,c according to rules #easy
[3606. Coupon Code Validator](https://leetcode.com/problems/coupon-code-validator/description/) easy
Filter a,b,c according to rules #easy
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# 14.12.2025
[2147. Number of Ways to Divide a Long Corridor](https://leetcode.com/problems/number-of-ways-to-divide-a-long-corridor/description/) hard
Ways to split pairs of S #hard
[2147. Number of Ways to Divide a Long Corridor](https://leetcode.com/problems/number-of-ways-to-divide-a-long-corridor/description/) hard
Ways to split pairs of S #hard
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