This code defines a function `cookies` that takes an integer...

April 19, 2024 at 06:42 AM

int cookies(int k, vector<int> A) { int count=0; priority_queue<int,vector<int>,greater<int>> q; for(int i=0;i<A.size();i++) q.push(A[i]); while(<k) { int;q.pop(); if(q.empty()) return -1; int;q.pop(); q.push(a+2*b); count++; } return count; }

This code defines a function cookies that takes an integer k and a vector of integers A as input. It initializes a count variable to 0 and creates a min heap using a priority queue. It then pushes all elements of vector A into the priority queue.

The code then enters a while loop that continues as long as the top element of the priority queue is less than k. Inside the loop, it removes the top element a, and if the priority queue is empty, it returns -1. Otherwise, it removes the new top element b, calculates a new value a+2*b, and pushes it back into the priority queue. It increments the count variable in each iteration of the loop.

The function returns the final count value after the loop exits.

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