nesting.js

function processData(input) {
var lines = input.split("\n");
var t = parseInt(input[0]);
for (l=1; l<=t; l++) {
 var str = lines[l].split("").map(m=>parseInt(m));
 var ans = "";
 ans += "(".repeat(str[0]);
 for (i=0; i<str.length-1; i++) {
   ans+=str[i];
   if (str[i]>str[i+1]) {ans+=")".repeat(str[i]-str[i+1])}
   if (str[i]<str[i+1]) {ans+="(".repeat(str[i+1]-str[i])}
 }
 ans+=str[str.length-1];
 ans += ")".repeat(str[str.length-1]);
 console.log(`Case #${l}: ${ans}\n`);
}
}

process.stdin.resume();
process.stdin.setEncoding("ascii");
_input = "";
process.stdin.on("data", function (input) {
    _input += input;
});

process.stdin.on("end", function () {
   processData(_input);
});