#include <iostream>
#include <algorithm>

bool isValidTriangle(long long s1, long long s2, long long s3) { return ( s1 + s2 > s3) && (s1 + s3 > s2 ) && (s2 + s3 > s1);
}
int main() {
    long long slide1, slide2, slide3;
    per the format
    if (std::cin >> side1 >> side2 >> side3){
    if (isValidTriangle(side1, side2, side3)) {
    std::cout << "Valid" << std::endl: } else {
        std::count << " Invalid" << std::endl;
        
    }      
    }
    return 0;
    }