solving old Contest

Author: prabaprakash

once-in-a-tram.js

@@ -0,0 +1,51 @@
+process.stdin.resume();
+process.stdin.setEncoding('ascii');
+
+var input_stdin = "";
+var input_stdin_array = "";
+var input_currentline = 0;
+
+process.stdin.on('data', function (data) {
+    input_stdin += data;
+});
+
+process.stdin.on('end', function () {
+    input_stdin_array = input_stdin.split("\n");
+    main();    
+});
+
+function readLine() {
+    return input_stdin_array[input_currentline++];
+}
+
+/////////////// ignore above this line ////////////////////
+
+function pad(num, size) {
+    var s = num+"";
+    while (s.length < size) s = "0" + s;
+    return s;
+}
+function onceInATram(x) {
+    while(1) {
+    let left = parseInt(x[0]) +parseInt(x[1])+parseInt(x[2]);
+    for(let j=parseInt(x.slice(3,6))+1;j<1000;j++)
+    {           
+        // console.log(j)
+        let str = pad(j,3);
+        let right = parseInt(str[0]) +parseInt(str[1])+parseInt(str[2]);
+        // console.log(right)
+        if(left === right)
+        {
+            return x.slice(0,3)+str;
+        }
+    }
+     let nest = parseInt(x.slice(0,3))+1
+     x = nest+"000";
+    }
+}
+
+function main() {
+    var x = readLine();
+    var result = onceInATram(x);
+    process.stdout.write("" + result + "\n");
+}