Compilare: user.cpp: In function ‘unsigned int memoi()’: user.cpp:69:24: warning: suggest parentheses around ‘+’ inside ‘<<’ [-Wparentheses] for (int i=1;i<=put2(k+2)-1;i++) { ^ user.cpp:6:21: note: in definition of macro ‘put2’ #define put2(k) (1<<k) ^ user.cpp:79:17: warning: suggest parentheses around ‘+’ inside ‘<<’ [-Wparentheses] return a[put2(k+2)-1][k+1]; ^ user.cpp:6:21: note: in definition of macro ‘put2’ #define put2(k) (1<<k) ^ user.cpp: In function ‘int main()’: user.cpp:98:15: warning: unused variable ‘distmin’ [-Wunused-variable] unsigned int distmin = inf; ^ user.cpp:85:63: warning: iteration 18u invokes undefined behavior [-Waggressive-loop-optimizations] for (int i=0;i<=19;i++) for (int j=0;j<=19;j++) a[i][j] = inf; ^ user.cpp:85:26: note: containing loop for (int i=0;i<=19;i++) for (int j=0;j<=19;j++) a[i][j] = inf; ^