why I got error (/tmp/submission/20230321/07/35/hackerrank-9a64492898cab0ea015fbc82490e172f/code/Solution.cs(51,1): error CS1022: Type or namespace definition, or end-of-file expected [/tmp/submission/20230321/07/35/hackerrank-9a64492898cab0ea015fbc82490e172f/code/Solution.csproj])

using System; using System.Collections.Generic; using System.IO; using System.Linq; class Solution {

static void Main(String[] args) {

// read the number of test cases from the user input int t = Convert.ToInt32(Console.ReadLine());

// initialize two variables to store the sum of multiples of 3 and 5 respectively int sum0 = 0; // for multiples of 3 or 5 less than t int sum1 = 0; // for each test case

        // loop through all the natural numbers less than t
        for (int a0 = 0; a0 < t; a0++) {
            // check if the current number i is a multiple of 3 or 5
            if (a0 % 3 == 0 || a0 % 5 == 0)
            {
                // if so, add it to sum0
                sum0 += a0;
            }



        }
        // read the value of n for the current test case from the user input
        int n = Convert.ToInt32(Console.ReadLine());

        // loop through all the natural numbers less than n
        for (int a1 = 1; a1 < n; a1++)
        {
            // check if the current number j is a multiple of 3 or 5
            if (a1 % 3 == 0 || a1 % 5 == 0)
            {
                // if so, add it to sum1
                sum1 += a1;
            }
        }

        // output the final values of sum0 and sum1
        Console.WriteLine(sum0);

        Console.WriteLine(sum1);


        // wait for the user to press a key before closing the console window
        Console.ReadLine();
    }
}

}

for python,

import sys


t = int(input().strip())
for a0 in range(t):
    sum = 0
    n = int(input().strip())
    x, y, z = (n-1)//3, (n-1)//5, (n-1)//15
    sum = 3*x*(x+1) + 5*y*(y+1) - 15*z*(z+1)
    
    print(sum//2)

Could someone guide me on why my Julia code fails test cases #2 and #3?

function sumToNDigits(x)
    return x*(x+1)/2
end

t = parse(UInt128, strip(readline(stdin)))

for t_itr = 1:t
    n = parse(UInt128, strip(readline(stdin)))
    d3 = div(n-1, 3)
    d5 = div(n-1, 5)
    d15 = div(n-1, 15)
    sum3 = 3*sumToNDigits(d3)
    sum5 = 5*sumToNDigits(d5)
    sum15 = 15*sumToNDigits(d15)
    sum = sum3 + sum5 - sum15 
    println(sum)   
    # println(UInt128(sum))
end

exit()

Hi,

below is my code, which is failing even for t = 100.

I calculated manually for t = 100, but my answer(my answer 2633 vs system answer) seems correct.

can someone tell me whats wrong?

//Return sum of multiples of 3 and 5 below limitNum(n) int sumOfMultiples(int& limitNum) { int sum = 0; int num = 3;

for(int i =0; i<2; i++)
{
    int tempLimitNum = limitNum -1;

    int reminder = 1;

    while(reminder != 0)
    {
        reminder = tempLimitNum % num;
        if(reminder != 0)
        {
            tempLimitNum--;
        }
    }

    sum =sum + (((tempLimitNum - num)/num)+1)*(0.5)*(num+num*(((tempLimitNum - num)/num)+1));

    num = 5;
}

return sum;

}