#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;
       }
return 0;
}