#!/usr/bin/env node

var UInt160 = require('../').UInt160;
var address = process.argv[2];

if (address === '-') {
  readInput(validateAddress);
} else {
  validateAddress(address);
}

function readInput(callback) {
  var result = '';
  process.stdin.resume();
  process.stdin.setEncoding('utf8');
  process.stdin.on('data', function(data) {
    result += data;
  });
  process.stdin.on('end', function() {
    callback(result);
  });
};

function validateAddress(address) {
  process.stdout.write((UInt160.is_valid(address.trim()) ? '0' : '1') + '\r\n');
};