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