Sum of ones

#include <stdio.h>
#include <stdlib.h>
#include <stdbool.h>

#define MAX(X, Y) (((X) > (Y)) ? (X) : (Y))
#define MIN(X, Y) (((X) < (Y)) ? (X) : (Y))

void readInt(int *i) {
    if (scanf("%d", i) != 1)
        printf("Trouble reading int!\n");
}

void readll(long long *i) {
    if (scanf("%lld", i) != 1)
        printf("Trouble reading long long!\n");
}

void readIntArr(int *arr, int size) {
    for (int i = 0; i < size; i++)
        if (scanf("%d", &arr[i]) != 1)
            printf("Trouble reading int array!\n");
}

long long div_floor(long long x, long long y) {
    long long q = x / y;
    long long r = x % y;
    if ((r != 0) && ((r < 0) != (y < 0)))
        q--;
    return q;
}

int main() {
    long long n;
    long long *arr;
    readll(&n);
    arr = calloc(n+1, sizeof(long long));


    long long sum = 0;
    for(long long i = 1; i <= n; i++) {
        long long ww = i;
        long long sumsum = 0;
        while (ww > 0) {
            if(arr[ww] > 0) {
                sumsum += arr[ww];
                break;
            }
            if (ww & 1)
                sumsum += 1;
            ww = ww >> 1;
        }
        arr[i] = sumsum;
        sum += sumsum;
    }

    printf("%lld\n", sum);
    return 0;
}

Test 1

Verdict: ACCEPTED

Test 2

Verdict: ACCEPTED

Test 3

Verdict: ACCEPTED

Test 4

Verdict: ACCEPTED

Test 5

Verdict: ACCEPTED

Test 6

Verdict: ACCEPTED

Test 7

Verdict: ACCEPTED

Test 8

Verdict: ACCEPTED

Test 9

Verdict: ACCEPTED

Test 10

Verdict: ACCEPTED

Test 11

Verdict: RUNTIME ERROR

Test 12

Verdict: RUNTIME ERROR

Test 13

Verdict: RUNTIME ERROR

Test 14

Verdict: RUNTIME ERROR

Test 15

Verdict: RUNTIME ERROR

Test 16

Verdict: RUNTIME ERROR

Test 17

Verdict: RUNTIME ERROR

Test 18

Verdict: RUNTIME ERROR

Test 19

Verdict: RUNTIME ERROR

Test 20

Verdict: RUNTIME ERROR

Test 21

Verdict: RUNTIME ERROR