Untitled

#include <iostream>

void isTriangleSimple(double a, double b, double c) {
    if ((a+b+c) / 2 == std::max(std::max(a, b), c)) {
        std::cout << "It isnt s1mple";
    }
    else {
        std::cout << "Its s1mple";
    }
   
}

int main()
{
    double a, b, c;
    std::cin >> a >> b >> c;
    isTriangleSimple(a, b, c);
}