Compilare: main.cpp: In function 'int main()': main.cpp:3:23: warning: suggest parentheses around '-' in operand of '&' [-Wparentheses] #define Mask (1 << 8) - 1 ~~~~~~~~~^~~ main.cpp:26:45: note: in expansion of macro 'Mask' ++ frq[(v[i][t] >> (B * dig)) & Mask]; ^~~~ main.cpp:3:23: warning: suggest parentheses around '-' in operand of '&' [-Wparentheses] #define Mask (1 << 8) - 1 ~~~~~~~~~^~~ main.cpp:30:48: note: in expansion of macro 'Mask' int val = (v[i][t] >> (B * dig)) & Mask; ^~~~ main.cpp:18:20: warning: ignoring return value of 'int scanf(const char*, ...)', declared with attribute warn_unused_result [-Wunused-result] scanf("%d", &n); ^ main.cpp:20:30: warning: ignoring return value of 'int scanf(const char*, ...)', declared with attribute warn_unused_result [-Wunused-result] scanf("%d", &v[i][0]);// = (a * v[i - 1][0] + b) % c; ^