function inside_folder() {
var folder_id = ["1XizuIp302f2LP2FWebvcQDf5FYEjW5mL","1XizuIp302f2LP2FWebvcQDf5FYEjW5mL"]
var arr = []
for(var t = 0; t < folder_id.length; t++){
var folder = DriveApp.getFolderById(folder_id[t])
var files = folder.getFiles()
while (files.hasNext()) {
var file =
files.next();
arr = arr.concat([[folder.getName(), file.getName()]])
}
}
SpreadsheetApp.getActiveSpreadsheet().getSheetByName("Т1").getRange(1, 1, arr.length, arr[0].length).setValues(arr)
}