The program must accept a list of integer-alphabet pairs and two integers R, C as the input. The sum of the integers present in all the integer-alphabet pairs is always equal to the product of R and C. The program must form a matrix of size R*C based on the following conditions. The program must expand each integer-alphabet pair by repeating the specified alphabet X times, where X represents the integer value present in the pair. Then the program must fill the matrix with the expanded alphabets from the 1st row to the Rth row, where left to right in each row. Finally, the program must print the R*C matrix as the output. Boundary Condition(s): 2<=R,C<=50