text: #!/usr/bin/env node
  "use strict";
  
  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 main() {
      var n = parseInt(readLine());
      let arr = readLine().split(' ');
      arr = arr.map(Number);
  
      let np = 0, nn = 0, nz = 0
      arr.forEach(v => {
          if (v === 0)
              nz++
          else if (v > 0)
              np++
          else
              nn++
      })
      console.log((np / arr.length).toPrecision(6))
      console.log((nn / arr.length).toPrecision(6))
      console.log((nz / arr.length).toPrecision(6))
  }
  