#include <bits/stdc++.h>
using namespace std;
using ll = long long int;
using ld = long double;
using VI = vector<ll>;
using VD = vector<ld>;
using VVI = vector<VI>;
using VC = vector<char>;
using VVC = vector<VC>;
using VS = vector<string>;
using PLL = pair<ll, ll>;
using PLD = pair<ld, ld>;
using VPLL = vector<PLL>;
const long long int INF = 1e18;
const ld EPS = 1e-10;
const int MOD = int(1e9) + 7;
template <class T>
bool chmax(T &a, const T &b) {
  if (a < b) {
    a = b;
    return 1;
  }
  return 0;
}
template <class T>
bool chmin(T &a, const T &b) {
  if (b < a) {
    a = b;
    return 1;
  }
  return 0;
}
template <class BidirectionalIterator>
bool next_partial_permutation(BidirectionalIterator first,
                              BidirectionalIterator middle,
                              BidirectionalIterator last) {
  reverse(middle, last);
  return next_permutation(first, last);
}
void Main() {
  ll a, b, c;
  ll result = 0;
  string S;
  cin >> a >> b >> c;
  result = (a + b + c);
  if (result % 3 == 0)
    cout << "Yes"
         << "\n";
  else
    cout << "No"
         << "\n";
  return;
}
int main() {
  std::cin.tie(0);
  std::ios_base::sync_with_stdio(false);
  std::cout << std::fixed << std::setprecision(15);
  Main();
}
