Problem:
Score : 200 points

Problem Statement

An integer N is a multiple of 9 if and only if the sum of the digits in the decimal representation of N is a multiple of 9.

Determine whether N is a multiple of 9.

Constraints

0 \leq N < 10^{200000}

N is an integer.

Input

Input is given from Standard Input in the following format:

N

Output

If N is a multiple of 9, print Yes; otherwise, print No.

Sample Input 1

123456789

Sample Output 1

Yes

The sum of these digits is 1+2+3+4+5+6+7+8+9=45, which is a multiple of 9, so 123456789 is a multiple of 9.

Sample Input 2

0

Sample Output 2

Yes

Sample Input 3

31415926535897932384626433832795028841971693993751058209749445923078164062862089986280

Sample Output 3

No

Solution in C (GCC 9.2.1) (judge verdict: Wrong Answer)

#include<stdio.h>
// #include<string.h>

int main() {
  // int n = 1234567893;
  int n;
  scanf("%d\n", &n);
  if(n==0){
    printf("Yes\n");
    return 0;
  }
  int d = n;
  int len = 1;
  while((d / 10) != 0){
    d = d / 10;
    len++;
  }

  int q = n;
  int sum = 0;
  do {
    sum += q % 10;
    q /= 10;
  } while(q);
  if(!(sum % 9)){
    printf("Yes\n");
  } else {
    printf("No\n");
  }
  return 0;
}