#include<iostream>
using namespace std;
int main(){
    int side1,side2,side3;
    cin>>side1>>side2>>side3;
    if(side1>=1&&side2>=1 &&side3>=1&& side1<=106&&side2<=106&&side3<=106){
        if(side1+side2>side3&& side2+side3>side1 && side3+side1>side2){
            cout<<"Valid"<<endl;
        }else{
            cout<<"Invalid"<<endl;
        }
        }else{
            cout<<"Invalid"<<endl;
        }
    }
    return 0;
}