Compilare: user.cpp: In function ‘int main()’: user.cpp:30:42: warning: suggest parentheses around comparison in operand of ‘&’ [-Wparentheses] if( ( k ^ v[ i ][ j ] ) & ( ( 1 << s ) - 1) == ( ( 1 << s ) - 1 ) ) crt++; ^ user.cpp:33:33: warning: suggest parentheses around comparison in operand of ‘&’ [-Wparentheses] if( ( k ^ v[ l ][ c ] ) & ( ( 1 << s ) - 1) == ( ( 1 << s ) - 1 ) ) crt--; ^ user.cpp:50:50: warning: suggest parentheses around comparison in operand of ‘&’ [-Wparentheses] if( ( ( k ^ v[ ln ][ col ] ) & ( ( 1 << s ) - 1) == ( ( 1 << s ) - 1) ) && drm[ ln ][ col ] == 0 ) ^