Zad.10

#include <iostream>

using namespace std;
int obw (int a, int b, int c)
{
if (a+b>c)
{
    return -1;
}
else
{
    return a+b+c;
}
}
int main()
{
    int a,b,c;
    cin >> a;
    cin >> b;
    cin >> c;
    if (obw(a,b,c)==-1)
{
    cout << "Nie mozna utworzyc trojkata" << endl;
}
else
{
    cout << obw(a,b,c) << endl;
}
return 0;
}