#include<iostream>

using namespace std;
int main(){
    string s;
    cin>>s;
    if(s.size()!=19) {
        cout<<"Invalid";
        return 0;
    }
    for (int i=0;i<19;i++)
    if(i==4||i==9||i==14)s[i]!='-':!isalnum(s[i])||islower(s[i])){
        cout<<"Invalid";
        return 0;}
        cout<<"Valid";
        
    }