balanced numbers

let print = this.print || console.log;
let output = 0
for(i = 1 ; i <= 1000 ; i++){
let number = +gets()
let m = number.toString()
let n = m.split("").map(Number)
if(n[0] + n[2] === n[1]){
  output += number
}
else {break;}
}
print(output)