Compilare: user.cpp: In function ‘void Read()’: user.cpp:22:9: warning: unused variable ‘z’ [-Wunused-variable] int z,y,i; ^ user.cpp: In function ‘void BellF(int, int)’: user.cpp:56:32: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for(i=0; i<a[nod].size(); i++) ^ user.cpp: In function ‘void Salv()’: user.cpp:86:29: warning: suggest parentheses around ‘-’ inside ‘<<’ [-Wparentheses] sol=min(sol,dp[1<<k -1 ][i]+d[n][i]); ^