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

/**************************************************************
	Problem: 1041
	User: zhangziang
	Language: C++
	Result: Accepted
	Time:22 ms
	Memory:2072 kb
****************************************************************/