#include<bits/stdc++.h>
using namespace std;
int main(){
    int x,y,z;
    cin>>x>>y>>z;
    if(x<y)swap(x,y);
    if(x<z)swap(x,z);
    if(y<z)swap(y,z);
    if(y==x-1&&z==y-1)cout<<"TRUE";
    else cout<<"FALSE"; 
    return 0;
}
/**************************************************************
	Problem: 1041
	User: hongjiaming
	Language: C++
	Result: Accepted
	Time:20 ms
	Memory:2072 kb
****************************************************************/