+++++++++#include <stdio.h>
#include <ctype.h>

int main() {
    char s[101];
    int i, isDigitOnly = 1;
    
    scanf("%s",s);
    
    for (i = 0; s[i] != '\0'; i++) {
        if (!isdigit(s[i])) {
            isDigitOnly = 0;
            break;
        }
    }
    
    if (isDigitOnly)
    printf("TRUE");
    else
    printf("FALSE");
    
    return 0;
}