Ruudukko

var readline = require('readline');
 
var r = readline.createInterface({
    input: process.stdin,
    output: process.stdout,
    terminal: false
});
 
var expectedAmount = 0;
var items = []; 
var i = 0;
r.on('line', function (line) {
   
    if (i == 0) {
        expectedAmount = parseInt(line);
    } else {
        items.push(line.trim());
        if (i == expectedAmount) {
            app();
        }
    }
    i++;
});
 
function app() {
    for (var i = 0; i < items.length; i++) {
        if (items[i].trim() != '') {
            var split = items[i].split(' ');
            var a = split[0];
            var b = split[1];
            var count = 0;
            for (var x = a; x < b; x++) {
                var xstr = x.toString();
                var targetCounter = 0;
                for (z = 0; z < xstr.length; z++) {
                    if (xstr[z] == '0' || xstr[z] == '1') {
 
                        targetCounter += 1;
 
 
                    }
                }
                if (targetCounter == xstr.length) {
                    count++;
                }
            }
            console.log(count);
        }
    }
}

Test 1

Verdict: WRONG ANSWER

Test 2

Verdict: WRONG ANSWER

Test 3

Verdict: WRONG ANSWER

Test 4

Verdict: WRONG ANSWER

Test 5

Verdict: WRONG ANSWER

Test 6

Verdict: WRONG ANSWER