Compilare: main.cpp: In function 'bool check(int)': main.cpp:62:57: warning: right operand of comma operator has no effect [-Wunused-value] xx = verticala[j].xx+val, verticala[j].yy+val; ~~~~~~~~~~~~~~~^~~~ main.cpp: In function 'void solve()': main.cpp:89:10: warning: 'rez' may be used uninitialized in this function [-Wmaybe-uninitialized] g << rez; ^