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# Read command line arguments
args <- commandArgs(TRUE)

# Set options for numeric precision
options(digits=22)

# Load required libraries
library("Matrix")
library("matrixStats")

# Read matrices A, B, and C from Matrix Market format files
A = as.matrix(readMM(paste(args[1], "A.mtx", sep="")))
B = as.matrix(readMM(paste(args[1], "B.mtx", sep="")))
C = as.matrix(readMM(paste(args[1], "C.mtx", sep="")))

# Perform the matrix operation
R = (A %*% B) + (A %*% C)

# Write the result matrix R in Matrix Market format
writeMM(as(R, "CsparseMatrix"), paste(args[2], "R", sep=""))