define Low_Limit 1

define High_Lmit 1000

bool InRange(unsigned short int x) { if (Low_Limit <= x && x <= High_Lmit ) { return true; } else { return false; } }

int main() { /* Enter your code here. Read input from STDIN. Print output to STDOUT */ unsigned short int a , b ,c ;

std::cin >> a >> b >> c;

if((InRange(a)) && (InRange(b) && (InRange(c)))){
    std::cout << (a+b+c) << std::endl;
}
return 0;

}