func_code_string: #include <bits/stdc++.h>   using namespace std;   int main() {     int a, b, s;     cin >> a >> b >> s;     if (a < 0) a *= -1;     if (b < 0) b *= -1;     if (s < (a + b) || (s - a - b) % 2 != 0)       cout <<  No  << endl;     else       cout <<  Yes  << endl;     return 0;   }   