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

#include <ext/pb_ds/assoc_container.hpp>
#include <ext/pb_ds/tree_policy.hpp>
using namespace __gnu_pbds;

#define pb                    push_back
#define ll                    long long
#define ld                    long double
#define sz(x)                 (ll)x.size()
#define vll                   vector<long long>

#define infi                  INT_MAX
#define infl                  LONG_LONG_MAX
#define infd                  LDBL_MAX
#define f(i,a,b)              for(ll i=a;i<b;i++)
#define fi(i,a,b)             for(ll i=(b-1);i>=a;i--)
#define F                     first
#define S                     second
#define G(a,b)                get<a>(b)
#define MP                    make_pair
#define MT                    make_tuple
#define pll                   pair<ll,ll>
#define endl                  "\n"
#define ALL(v)                v.begin(),v.end()
#define nl                    cout<<"\n";
#define pr(x)                 cout<<x;
#define pr1(x)                cout<<x<<" ";
#define pr2(x,y)              cout<<x<<" "<<y;
#define pr3(x,y,z)            cout<<x<<" "<<y<<" "<<z;
#define pr4(x,y,z,w)          cout<<x<<" "<<y<<" "<<z<<" "<<w;
#define deb                   cout<<"***************************************************************************************\n";
#define moshi                 cout<<"moshi moshi ! \n";
#define hi                    cout<<"hi ! \n";
#define bye                   cout<<"bye bye ! \n";
#define kawai                 cout<<"O kawai koto ! \n";
#define o_set                 tree<ll, null_type,less<ll>, rb_tree_tag,tree_order_statistics_node_update>
#define number_of_set_bits  __builtin_popcountll
#define eb                    emplace_back
const ld PI=3.1415926535897932384626433;

template<class T>
using min_heap = priority_queue<T,vector<T>,greater<T> >;


auto clk=clock();
mt19937_64 rng(chrono::high_resolution_clock::now().time_since_epoch().count());

#define TRACE
#ifdef TRACE
#define trace(...) __f(#__VA_ARGS__, __VA_ARGS__)
    template <typename Arg1>
    void __f(const char* name, Arg1&& arg1){
        cout << name << " : " << arg1 <<"\n";
        //use cerr if u want to display at the bottom
    }
    template <typename Arg1, typename... Args>
    void __f(const char* names, Arg1&& arg1, Args&&... args){
        const char* comma = strchr(names + 1, ','); cout.write(names, comma - names) << " : " << arg1<<" | ";__f(comma+1, args...);
    }
#else
#define trace(...)
#endif

//**********************************************************  Code begins  ***********************************************

// trick for traversing all submasks
// for (ll j=mask ;j; j=(j-1)&mask)  // also include 0 manually
// v.resize(unique(v.begin(), v.end()) - v.begin());    // remove duplicates



void solve()
{
  ll a,b,c;
  cin>>a>>b>>c;
  ll x=a*a+b*b,y=c*c;
  if(x<y) cout<<"Yes\n";
  else cout<<"No\n";
}


int main()
{
    ios_base::sync_with_stdio(0),cin.tie(0),cout.tie(0);
    srand(chrono::high_resolution_clock::now().time_since_epoch().count());
    cout<<fixed<<setprecision(8);

    ll test_cases=1;
    //cin>>test_cases;

    f(i,1,test_cases+1)
    {
        solve();
        //clr();
    }


    #ifdef rd
    cout<<endl<<endl<<endl<<endl<<"Time elapsed: "<<(double)(clock()-clk)/CLOCKS_PER_SEC<<endl;
    #endif

    return 0;
}

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

#include <algorithm>
#include <cmath>
#include <iomanip>
#include <iostream>
#include <string>
#include <vector>
using namespace std;
using ll = long long int;
using ull = unsigned long long int;

template <class T>
inline bool chmin(T &a, T b) {
    if (a > b) {
        a = b;
        return true;
    }
    return false;
}

template <class T>
inline bool chmax(T &a, T b) {
    if (a < b) {
        a = b;
        return true;
    }
    return false;
}

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