Compilare: main.cpp: In function 'int main()': main.cpp:33:72: warning: 'bestj' may be used uninitialized in this function [-Wmaybe-uninitialized] out << i * ( i + 1 ) * ( 2 * i + 1 ) / 6 + ( i + 1 ) * ( bestj - 1 ) + bestk << " " ; ~~~~~~~~^~~~~ main.cpp:33:89: warning: 'bestk' may be used uninitialized in this function [-Wmaybe-uninitialized] out << i * ( i + 1 ) * ( 2 * i + 1 ) / 6 + ( i + 1 ) * ( bestj - 1 ) + bestk << " " ; ^~~