Compilare: main.cpp: In function 'int main()': main.cpp:78:33: warning: 'solution' may be used uninitialized in this function [-Wmaybe-uninitialized] cout << solution << '\n'; ^~~~ main.cpp:60:33: warning: 'solution' may be used uninitialized in this function [-Wmaybe-uninitialized] cout << solution << '\n'; ^~~~