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uva Archives | forthright48 https://forthright48.com/tag/uva/ learning never ends Sat, 24 Nov 2018 18:02:51 +0000 en-US hourly 1 https://wordpress.org/?v=6.5.8 Stars and Bars Theorem https://forthright48.com/stars-and-bars-theorem/?utm_source=rss&utm_medium=rss&utm_campaign=stars-and-bars-theorem https://forthright48.com/stars-and-bars-theorem/#respond Sun, 23 Sep 2018 15:32:54 +0000 https://forthright48.com/?p=307 Problem Given K variables, $a_1, a_2, a_3 \dots a_K$ and a value $N$, how many ways can we write $a_1 + a_2 + a_3 \dots a_K = N$, where $a_1, a_2, a_3 \dots a_K$ are non-negative integers? For example, if $K = 3$ and $N=2$, there are 6 solutions. a b c ----- 2 0 …

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]]> https://forthright48.com/stars-and-bars-theorem/feed/ 0 Contest Analysis: BUET Inter-University Programming Contest – 2011, UVa 12424 – 12432 https://forthright48.com/contest-analysis-buet-inter-university-programming-contest-2011-uva-12424-12432/?utm_source=rss&utm_medium=rss&utm_campaign=contest-analysis-buet-inter-university-programming-contest-2011-uva-12424-12432 https://forthright48.com/contest-analysis-buet-inter-university-programming-contest-2011-uva-12424-12432/#comments Tue, 25 Aug 2015 16:51:00 +0000 Last week (2015-08-21) we practiced with this set. Some of the problems didn’t have proper constraints, which caused some headaches. This contest originally followed Google Code Jam format with two subproblems ( small and large ) for each problem. Each of the sub-problems had a different constraint on them. But when they uploaded it online, …

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]]> https://forthright48.com/contest-analysis-buet-inter-university-programming-contest-2011-uva-12424-12432/feed/ 2 Contest Analysis: IUT 6th National ICT Fest 2014, UVa 12830 – 12839 https://forthright48.com/contest-analysis-uva-12830-12839/?utm_source=rss&utm_medium=rss&utm_campaign=contest-analysis-uva-12830-12839 https://forthright48.com/contest-analysis-uva-12830-12839/#respond Thu, 20 Aug 2015 16:44:00 +0000 I participated in this contest last year. Our team “NSU Shinobis” managed to solve 5 and placed in the top 10 ( failed to find the rank list ). The IUT 7th ICT National Fest 2015 is going to be held next month, so I thought I would try to up solve the remaining problems. …

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]]> https://forthright48.com/contest-analysis-uva-12830-12839/feed/ 0 UVa 10407 – Simple division https://forthright48.com/uva-10407-simple-division/?utm_source=rss&utm_medium=rss&utm_campaign=uva-10407-simple-division https://forthright48.com/uva-10407-simple-division/#comments Tue, 04 Aug 2015 16:05:00 +0000 https://forthright48.com/2015/08/04/uva-10407-simple-division/ Problem Problem Link – UVa 10407 – Simple division Given an array of numbers, find the largest number $d$ such that, when elements of the array are divided by $d$, they leave the same remainder Solution We will be using our knowledge about Congruence Relation and GCD to solve this problem. But first, we need …

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]]> https://forthright48.com/uva-10407-simple-division/feed/ 3 UVa 11388 – GCD LCM https://forthright48.com/uva-11388-gcd-lcm/?utm_source=rss&utm_medium=rss&utm_campaign=uva-11388-gcd-lcm https://forthright48.com/uva-11388-gcd-lcm/#comments Mon, 03 Aug 2015 10:00:00 +0000 https://forthright48.com/2015/08/03/uva-11388-gcd-lcm/ Problem Problem Link – UVa 11388 – GCD LCM Given two positive integers $(G, L)$, we have to find a pair of integers $(a,b)$ such that $gcd(a, b)=G$ and $\text{lcm}(a, b)=L$. If there are multiple such pairs, we have to find the pair where $a$ is minimum. Also, both $a$ and $b$ needs to be …

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