func_code_string: #include <bits/stdc++.h>   using namespace std;   int main() {     int a, b, s;     cin >> a >> b >> s;     a < 0 ? a *= -1 : a *= 1;     b < 0 ? b *= -1 : b *= 1;     int l = min(a, b) * 2 + (max(a, b) - min(a, b));     cout << (l <= s ? l % 2 == s % 2 ?  YES  :  NO  :  NO );   }   