Compilare: user.cpp: In function ‘void Solve()’: user.cpp:41:28: warning: suggest explicit braces to avoid ambiguous ‘else’ [-Wparentheses] if (s[k]-'a'==j) ^ user.cpp:49:26: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] if (k==strlen(s)) {lit=j;break;} ^ user.cpp:22:9: warning: unused variable ‘mx’ [-Wunused-variable] int mx,mn,dist,i,j,k,lit; ^ user.cpp:22:26: warning: ‘lit’ may be used uninitialized in this function [-Wmaybe-uninitialized] int mx,mn,dist,i,j,k,lit; ^