#include<bits/stdc++.h>
using namespace std;
int cmp(int x,int y){
	return x>y;
}
int a[4];
int main(){
   cin>>a[1]>>a[2]>>a[3];
   sort(a+1,a+4,cmp);
   if(a[1]-1==a[2]&&a[2]-1==a[3]){
   	cout<<"TRUE";
   }
   else cout<<"FALSE";
   return 0;
}

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