#include <iostream>
using namespace std;
using namespace std;
int main() {
    int a, b, c, t;
    cin >> a >> b >> c;
    if (a > b) { t = a; a = b; b = t; }
    if (b > c) { t = b; b = c; c = t; }
    if (a > c) { t = a; a = c; c = t; }
    if (c - a == 2) {
        cout << "TRUE" << endl;
    } else {
        cout << "FALSE" << endl;
    }
    return 0;
}
/**************************************************************
	Problem: 1041
	User: fuhoubin
	Language: C++
	Result: Wrong Answer
****************************************************************/