#include<bits/stdc++.h>
using namespace std;
int main(){
    int a,b,c;
    cin>>a>>b>>c;
    if(a>b) swap(a,b);
    if(a>c) swap(a,c);
    if(b>c) swap(b,c);
    if(a+1==b&&c-1==b){
        cout<<"TRUE";
    }else{
        cout<<"FALSE";
    }
}
/**************************************************************
	Problem: 1041
	User: baizhoudeyueguang
	Language: C++
	Result: Accepted
	Time:23 ms
	Memory:2072 kb
****************************************************************/