#include <bits/stdc++.h> using namespace std;

int main() { int a[3]; cin >> a[0] >> a[1] >> a[2]; sort(a, a + 3); if (a[0]*a[0] + a[1] == a[2]*a[2]) { cout << a[2]*a[2]; } else cout << a[1]*a[1] + a[2]*a[2]; return 0; }