text: 'use strict';
  
  process.stdin.resume();
  process.stdin.setEncoding('utf-8');
  
  let inputString = '';
  let currentLine = 0;
  
  process.stdin.on('data', inputStdin => {
      inputString += inputStdin;
  });
  
  process.stdin.on('end', _ => {
      inputString = inputString.trim().split('\n').map(string => {
          return string.trim();
      });
      
      main();    
  });
  
  function readLine() {
      return inputString[currentLine++];
  }
  
  function regexVar() {
      /*
       * Declare a RegExp object variable named 're'
       * It must match a string that starts with 'Mr.', 'Mrs.', 'Ms.', 'Dr.', or 'Er.', 
       * followed by one or more letters.
       */
      let re = /^(Mr|Mrs|Ms|Dr|Er)[\\.][a-zA-Z]+$/;   // \\. means consider the char as dot(.) not any character
    
      /* Method 2
      var re = (/^(Mr\.|Dr\.|Er\.|Ms\.|Mrs\.)\s?[a-z|A-Z]+$/);
      */
      
      /*
       * Do not remove the return statement
       */
      return re;
  }
  
  
  function main() {
      const re = regexVar();
      const s = readLine();
      
      console.log(!!s.match(re));
  }
  