#include <stdio.h>
using namespace std;
int main() {
    int a, b, c, t;
    scanf("%d%d%d", &a, &b, &c);
    if (a > b) t = a, a = b, b = t;
    if (b > c) t = b, b = c, c = t;
    printf(c - a == 2 ? "TRUE" : "FALSE");
    return 0;
}
/**************************************************************
	Problem: 1041
	User: fuhoubin
	Language: C++
	Result: Wrong Answer
****************************************************************/