Codeforces Round #416 (Div. 2) A. Vladik and Courtesy

#include <iostream>
#include <algorithm>
using namespace std;

int main()
{
cin.sync_with_stdio(false);
cin.tie(false);
int a,b;
cin >> a >> b;
int der = 0;
while(true)
{
der++;
a = a-der;
if(a < 0)
{
cout << "Vladik" <<endl;
break;
}
der++;
b = b-der;
if(b < 0)
{
cout << "Valera" << endl;
break;
}
}
return 0;
}