#include<bits/stdc++.h>
using namespace std;
int main(){
    int a,b,c,t;
    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 (a-b==1&&b-c==1) cout<<"TRUE";
    else cout<<"FALSE";
    return 0;
}
/**************************************************************
	Problem: 1041
	User: chenmingyu
	Language: C++
	Result: Accepted
	Time:20 ms
	Memory:2072 kb
****************************************************************/