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

/**************************************************************
	Problem: 1041
	User: LYY001
	Language: C++
	Result: Wrong Answer
****************************************************************/