#include<bits/stdc++.h>
using namespace std;
int a[1000],n,c;
int main(){
	n=3;
  for(int i=1;i<=n;i++){
  	cin>>a[i];
  }
  for(int i=1;i<=n-1;i++){
  	for(int j=i;j<=n-i;j++){
  		if(a[j]>a[j+1])swap(a[j],a[j+1]);
  	}
  }
  for(int i=1;i<=3;i++){
//cout<<a[i];
  	if(a[i]+1==a[i+1])c++;
  }
if(c==2)cout<<"TRUE";
else cout<<"FALSE";
   return 0;
}

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