The school cafeteria offers circular and square sandwiches at lunch break, referred to by numbers 0 and 1 respectively. All students stand in a queue. Each student either prefers square or circular sandwiches.
The number of sandwiches in the cafeteria is equal to the number of students. The sandwiches are placed in a stack. At each step:
\n\nThis continues until none of the queue students want to take the top sandwich and are thus unable to eat.
\n\nYou are given two integer arrays students and sandwiches where sandwiches[i] is the type of the ith sandwich in the stack (i = 0 is the top of the stack) and students[j] is the preference of the jth student in the initial queue (j = 0 is the front of the queue). Return the number of students that are unable to eat.
\n
Example 1:
\n\n\nInput: students = [1,1,0,0], sandwiches = [0,1,0,1]\nOutput: 0 \nExplanation:\n- Front student leaves the top sandwich and returns to the end of the line making students = [1,0,0,1].\n- Front student leaves the top sandwich and returns to the end of the line making students = [0,0,1,1].\n- Front student takes the top sandwich and leaves the line making students = [0,1,1] and sandwiches = [1,0,1].\n- Front student leaves the top sandwich and returns to the end of the line making students = [1,1,0].\n- Front student takes the top sandwich and leaves the line making students = [1,0] and sandwiches = [0,1].\n- Front student leaves the top sandwich and returns to the end of the line making students = [0,1].\n- Front student takes the top sandwich and leaves the line making students = [1] and sandwiches = [1].\n- Front student takes the top sandwich and leaves the line making students = [] and sandwiches = [].\nHence all students are able to eat.\n\n\n
Example 2:
\n\n\nInput: students = [1,1,1,0,0,1], sandwiches = [1,0,0,0,1,1]\nOutput: 3\n\n\n
\n
Constraints:
\n\n1 <= students.length, sandwiches.length <= 100students.length == sandwiches.lengthsandwiches[i] is 0 or 1.students[i] is 0 or 1.Compiled with clang 11 using the latest C++ 17 standard.
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