#include <bits/stdc++.h>
using namespace std;

int main() {
  int a, b, c;
  cin >> a >> b >> c;
  if(a*a+b*b<c*c){
    cout << "Yes" << endl;
  }else{
    cout << "No" << endl;
  }
}
#include <bits/stdc++.h>
//#include <atcoder/all>
using namespace std;
//using namespace atcoder;
 
template<class T> inline bool chmax(T& a, T b) { if (a < b) { a = b; return 1; } return 0; }
template<class T> inline bool chmin(T& a, T b) { if (a > b) { a = b; return 1; } return 0; }
 
#define rep(i,cc,n) for(int i=cc;i<n;++i)
#define lrep(i,cc,n) for(long long i=cc;i<n;++i)
#define sqrep(i,cc,n) for(long long i=cc;i*i<=n;++i)
#define rrep(i,cc,n) for(int i=cc;i>=n;--i)
#define pii pair<int, int>
#define pll pair<long long, long long>
 
using ll = long long;
 
const vector<int> dx = {1, 0, -1,  0};
const vector<int> dy = {0, 1,  0, -1};
 
const vector<int> dx2 = {1, 1,  1, 0,  0, 0, -1, -1, -1};
const vector<int> dy2 = {1, 0, -1, 1, -1, 0,  1,  0, -1};
 
const double PI = 3.1415926535;
const ll inf = 1001001001;
const ll e9  = 1000000000;
const ll mod = 1000000007;
const ll mod2 = 998244353;
 
const ll MAX = 1000000;
const ll MOD = 1000000007;
const ll big = (1ll<<60);
 
const ll moda = 1000000007;
const ll modb = 100000007;

ll gcd(ll x, ll y) { return (x % y)? gcd(y, x % y): y; }

ll modPow(ll a, ll n, ll p) {
  if (n == 0) return 1;
  if (n == 1) return a % p;
  if (n % 2 == 1) return (a * modPow(a, n - 1, p)) % p;
  ll t = modPow(a, n / 2, p);
  return (t * t) % p;
}

int main(){
  ll a, b, c;
  cin >> a >> b >> c;
  cout << (a*a+b*b<c*c ? "Yes":"No") << endl;
}