Compilare: main.cpp: In function 'long long int Diferenta(int, int)': main.cpp:13:61: warning: left operand of comma operator has no effect [-Wunused-value] x = max(max(a[i], a[j] - a[i]), a[n] - a[j]) - min ((a[i], a[j] - a[i]), a[n] - a[j]); ~~~^