Compilare: user.cpp: In function ‘void Solve()’: user.cpp:51:52: warning: ‘_fj’ may be used uninitialized in this function [-Wmaybe-uninitialized] return (((a*(a-1)*(2*a-1)) / 6) + ((b-1)*a) + c); ^ user.cpp:58:26: note: ‘_fj’ was declared here int _max = 0,_fi,_fl,_fj; ^ user.cpp:51:45: warning: ‘_fl’ may be used uninitialized in this function [-Wmaybe-uninitialized] return (((a*(a-1)*(2*a-1)) / 6) + ((b-1)*a) + c); ^ user.cpp:58:22: note: ‘_fl’ was declared here int _max = 0,_fi,_fl,_fj; ^ user.cpp:51:42: warning: ‘_fi’ may be used uninitialized in this function [-Wmaybe-uninitialized] return (((a*(a-1)*(2*a-1)) / 6) + ((b-1)*a) + c); ^ user.cpp:58:18: note: ‘_fi’ was declared here int _max = 0,_fi,_fl,_fj; ^