Compressed Bracket Sequence codeforces solution – William has a favorite bracket sequence. Since his favorite sequence is quite big he provided it to you as a sequence of positive integers c1,c2,…,cnc1,c2,…,cn where cici is the number of consecutive brackets

Compressed Bracket Sequence codeforces solution William has a favorite bracket sequence. Since his favorite sequence is quite big he provided it to you as a sequence of positive integers c1,c2,…,cnc1,c2,…,cn where cici is the number of consecutive brackets “(” if ii is an odd number or the number of consecutive brackets “)” if ii is an even number. For example for a … Read more

A Variety of Operations solution codeforces – William has two numbers aa and bb initially both equal to zero. William mastered performing three different operations with them quickly

  A Variety of Operations solution codeforces William has two numbers aa and bb initially both equal to zero. William mastered performing three different operations with them quickly. Before performing each operation some positive integer kk is picked, which is then used to perform one of the following operations: (note, that for each operation you can choose a new positive integer kk) add number kk to both aa and bb, … Read more

Take Your Places! solution codeforces – William has an array of nn integers a1,a2,…,ana1,a2,…,an. In one move he can swap two neighboring items

  Take Your Places! solution codeforces William has an array of nn integers a1,a2,…,ana1,a2,…,an. In one move he can swap two neighboring items. Two items aiai and ajaj are considered neighboring if the condition |i−j|=1|i−j|=1 is satisfied. William wants you to calculate the minimal number of swaps he would need to perform to make it so that the array does not contain two neighboring … Read more