Compilare: user.cpp: In function ‘int main()’: user.cpp:59:23: warning: left operand of comma operator has no effect [-Wunused-value] for (i=0, j=n-1; i<n, j>=0; ++i, --j) ^ user.cpp:63:15: warning: suggest parentheses around assignment used as truth value [-Wparentheses] if (maxx=0) fout<<"0"; ^ user.cpp:45:9: warning: unused variable ‘sol’ [-Wunused-variable] int sol; ^