func_code_string: #include <bits/stdc++.h>   int main() {     int l, r, a, count;     scanf( %d%d%d , &l, &r, &a);     count = 0;     while (count < a) {       if (l > (r + a)) {         r = r + a;         goto x;       }       if (r > (l + a)) {         l = l + a;         goto x;       }       if (l < r) {         l++;         count++;       }       if (l == r) {         if ((a - count) % 2 == 0) {           l = l + (a - count) / 2;           r = r + (a - count) / 2;           goto x;         } else {           l = l + (a - count - 1) / 2;           r = r + (a - count - 1) / 2;           goto x;         }       }       if (r < l) {         r++;         count++;       }     }   x:     if (l <= r)       printf( %d , 2 * l);     else       printf( %d , 2 * r);     return 0;   }   