#include <bits/stdc++.h>
using namespace std;
int main(){
	int i[3];
	cin>>i[0]>>i[1]>>i[2];
	sort(i,i+3);
	if(i[0]+1==i[1]&&i[1]+1==i[2])cout<<"TRUE";
	else cout<<"FALSE";
	return 0;
}

/**************************************************************
	Problem: 1041
	User: zhouhongyi
	Language: C++
	Result: Accepted
	Time:21 ms
	Memory:2076 kb
****************************************************************/