hackerrank_library-fine.js

function processData(input) {
    var is = input.split('\n');
    
    var is1 = is[0].split(' ');
    var is2 = is[1].split(' ');
    
    var result = 10000;
    
    var date_ret    = new Date(is1[1] + '-' + is1[0] + '-' + is1[2]);
    var date_max    = new Date(is2[1] + '-' + is2[0] + '-' + is2[2]);
    
    if (date_ret.getTime() <= date_max.getTime()){
        result = 0;
    }
    else if (date_max.getUTCMonth() == date_ret.getUTCMonth() && 
             date_max.getUTCFullYear() == date_ret.getUTCFullYear()){
        
        result = (date_ret.getUTCDate() - date_max.getUTCDate()) * 15;
    }
    else if (date_max.getUTCFullYear() == date_ret.getUTCFullYear()){
        result = (date_ret.getUTCMonth() - date_max.getUTCMonth()) * 500;
    }
    
    process.stdout.write("" + result);
} 

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

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