#inclde<iostream>
using namespace std;
int main()
{
    int side 1=10,side 2=5,side 3=9;
    if (side 1+side 2 > side 3 && side 1+side 3 > side 2 && side 2+side 3> side 1)
    {
        cout<<"valid"<<endl;
    }
    else
    {
        cout<<"Invalid"<<emdl;
    }
}