#include<bits/stdc++.h>
using namespace std;
int main(){
	int a,b,c;
	cin>>a>>b>>c;
	if(b>a){
		swap(b,a);
	} 
	if(c>a){
		swap(c,a);
	}
	if(c>b){
		swap(c,b);
	}
	if(c+1==b && b+1==a && a-2==c){
		cout<<"TRUE";
	}else{
		cout<<"FALSE";
	}
	
}

/**************************************************************
	Problem: 1041
	User: zhengzihao3
	Language: C++
	Result: Accepted
	Time:31 ms
	Memory:2072 kb
****************************************************************/