function partyProfit([partySize,days]){
    let sum = 0;

    for(let n = 1; n <= days;n++){
       sum += 50;
       sum -= 2 * partySize;
       if(n % 10 === 0){
          partySize -= 2;
      }
      if(n % 15 === 0){
         partySize += 5;
      }
       if(n % 3 === 0){
          sum -= 3 * partySize;
       }
        if(n % 5 === 0){
          sum += 20 * partySize;
       }
       if(n % 3 === 0 && n % 5 === 0){
          sum -= 2 * partySize;
       }

    }
    console.log(`${parseInt(partySize)} companions received ${parseInt(sum/partySize)} coins each.`)
}