Compilare: user.cpp: In function ‘void Solve()’: user.cpp:48:48: warning: ‘_fj’ may be used uninitialized in this function [-Wmaybe-uninitialized] return (((a*(a+1)*(2*a+1)) / 6) + (b*a) + c); ^ user.cpp:55:26: note: ‘_fj’ was declared here int _max = 0,_fi,_fl,_fj; ^ user.cpp:48:16: warning: ‘_fl’ may be used uninitialized in this function [-Wmaybe-uninitialized] return (((a*(a+1)*(2*a+1)) / 6) + (b*a) + c); ^ user.cpp:55:22: note: ‘_fl’ was declared here int _max = 0,_fi,_fl,_fj; ^ user.cpp:48:41: warning: ‘_fi’ may be used uninitialized in this function [-Wmaybe-uninitialized] return (((a*(a+1)*(2*a+1)) / 6) + (b*a) + c); ^ user.cpp:55:18: note: ‘_fi’ was declared here int _max = 0,_fi,_fl,_fj; ^