"use strict";
process.stdin.setEncoding("utf8");
var incoming = "";
process.stdin.on("data", function(chunk) {
  incoming += chunk;
  var i = incoming.indexOf("\n");
  if (i > -1) {
    try{
      var fn = JSON.parse(incoming.substr(0, i));
      incoming = incoming.substr(i+1);
      process.stdout.write(JSON.stringify(require("vm").runInNewContext(fn, {})) + "\n");
    }
    catch(e){
      console.error(e)
    }
    /*strings to indicate the process has finished*/
    console.log("r1cepzbhUTxtykz5XTC4");
    console.error("r1cepzbhUTxtykz5XTC4");
  }
});
process.stdin.on("end", process.exit);