Compilare: main.cpp: In function 'void radix(int (*)[10001000], int)': main.cpp:7:23: warning: suggest parentheses around '-' in operand of '&' [-Wparentheses] #define mask (1 << 8) -1 ~~~~~~~~~^~ main.cpp:17:48: note: in expansion of macro 'mask' ++cnt[(v[it & 1][i] >> (it * 8)) & mask ]; ^~~~ main.cpp:7:23: warning: suggest parentheses around '-' in operand of '&' [-Wparentheses] #define mask (1 << 8) -1 ~~~~~~~~~^~ main.cpp:8:35: note: in expansion of macro 'mask' #define pos(x) (x >> (it * 8) ) & mask ^~~~ main.cpp:22:32: note: in expansion of macro 'pos' v[( it + 1) & 1][index[pos(v[it & 1][i])]++] = v[it & 1][i]; ^~~ main.cpp: In function 'int main()': main.cpp:29:9: warning: unused variable 'i' [-Wunused-variable] int i,n = 0; ^