Compilare: main.cpp: In function 'void BackTrack(int)': main.cpp:71:59: warning: narrowing conversion of 'i' from 'int' to 'short int' inside { } [-Wnarrowing] d.push_front({i, j, l}); ^ main.cpp:71:59: warning: narrowing conversion of 'j' from 'int' to 'short int' inside { } [-Wnarrowing] main.cpp:71:59: warning: narrowing conversion of 'l' from 'int' to 'short int' inside { } [-Wnarrowing] main.cpp: In function 'int main()': main.cpp:89:12: warning: unused variable 'j' [-Wunused-variable] int i, j; ^