#-------------------------------------------------------------
#
# Licensed to the Apache Software Foundation (ASF) under one
# or more contributor license agreements.  See the NOTICE file
# distributed with this work for additional information
# regarding copyright ownership.  The ASF licenses this file
# to you under the Apache License, Version 2.0 (the
# "License"); you may not use this file except in compliance
# with the License.  You may obtain a copy of the License at
#
#   http://www.apache.org/licenses/LICENSE-2.0
#
# Unless required by applicable law or agreed to in writing,
# software distributed under the License is distributed on an
# "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
# KIND, either express or implied.  See the License for the
# specific language governing permissions and limitations
# under the License.
#
#-------------------------------------------------------------


# Read matrices X, U, V, and W
X = read($1)
U = read($2)
V = read($3)
W = read($4)
type = $5

# Perform  operations
if(type == 1) {
    R = sum(W * (X - U %*% t(V))^2)
}
else if(type == 2) {
    R = sum(W * (U %*% t(V) - X)^2)
}
else if(type == 3){
    R = sum((X - W * (U %*% t(V)))^2)
}
else if(type == 4){
    R = sum((W * (U %*% t(V)) - X)^2)
}
else if(type == 5){
    R = sum((X - (U %*% t(V)))^2)
}
else if(type == 6){
    R = sum(((U %*% t(V)) - X)^2)
}


# Write the result scalar R
write(R, $6)
