#include<iostream>
#include<cstdio>
#include<cmath>
#include<algorithm>
using namespace std;
int main(){
	int a,b,c,d;
	cin >> a >> b >> c;
	bool bl1=a>b;
	bool bl2=a>c;
	bool bl3=b>c;
	if(bl1 == 1){
		if(bl2 == 1){
			d = a;
		}else{
			d = c;
		}
	}else{
		if(bl3 == 1){
			d = b;
		}else{
			d = c;
		}
	}
	if(a+b+c-d > d){
		cout << "1";
	}else{
		cout << "0";
	}
	return 0;
}

#include <bits/stdc++.h>
using namespace std;
int main()
{
    int a,b,c;
    cin>>a>>b>>c;
    if(a+b>c&&b+c>a&&c+a>b)cout<<1;
    else cout<<0;
    return 0;
}

#include<bits/stdc++.h>
using namespace std;
int main(){
	int a,b,c;cin>>a>>b>>c;
	if (a+b>=c&&a+c>=b&&b+c>=a)	cout<<1;
	else cout<<0;
}