Challenging Valleys solution codeforces

Challenging Valleys solution codeforces You are given an array a[0…n−1]a[0…n−1] of nn integers. This array is called a “valley” if there exists exactly one subarray a[l…r]a[l…r] such that: 0≤l≤r≤n−10≤l≤r≤n−1, al=al+1=al+2=⋯=aral=al+1=al+2=⋯=ar, l=0l=0 or al−1>alal−1>al, r=n−1r=n−1 or ar<ar+1ar<ar+1. Here are three examples: The first image shows the array [3,2,2,1,2,2,33,2,2,1,2,2,3], it is a valley because only subarray…

MaxEdges solution codechef

MaxEdges solution codechef – Tracy gives Charlie a Directed Acyclic Graph with NN vertices. Among these NN vertices, KK vertices are sources, and LL vertices are sinks. MaxEdges solution codechef Find out the maximum number of edges this graph can have. Note: A source is a vertex with no incoming edge. A sink is a vertex with no outgoing edge. A vertex…

Minimize swaps solution codechef

Minimize swaps solution codechef – You are given a binary string SS. In one operation, you can pick an index ii (1\le i \lt |S|)(1≤i<∣S∣) and swap the characters S_iSi​ and S_{(i+1)}S(i+1)​. Minimize swaps solution codechef Find the minimum number of operations required, such that, the decimal representation…

Split and Maximize solution codechef

Split and Maximize solution codechef – Let ff be a function, such that, for an array AA of size MM, f(A)f(A) is defined as f(A) = \sum_{i=1}^{M}\sum_{j=1, j \ne i}^{j=M} (A_i\cdot A_j)f(A)=∑i=1M​∑j=1,j​=ij=M​(Ai​⋅Aj​) Split and Maximize solution codechef You are given an array CC of size NN. In one operation…

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