function plusMinus(arr) {
   if (arr.length > 100 || Math.min(...arr) < -100 || Math.max(...arr) > 100) return

   let positiveCount = 0
   let negativeCount= 0
   let zeroCount =0
    
   arr.forEach(int => {
    if (Math.sign(int) === 1) ++positiveCount;
    else if (Math.sign(int) === -1 ) ++negativeCount;
    else if (Math.sign(int) === 0) ++zeroCount;
   })
   
    console.log((positiveCount / arr.length).toFixed(6))
    console.log((negativeCount / arr.length).toFixed(6))
    console.log((zeroCount / arr.length).toFixed(6))
}