diff --git a/README.md b/README.md
index 03a3ae4..904a92b 100644
--- a/README.md
+++ b/README.md
@@ -10,7 +10,7 @@ The problem stated was:
     Given a number (assume base 10) less than 10,000, write a program in
     C++ that will reverse the digits of that number, calculate the
     original number to the power of the new number, and print it out.
-    You may not use Boost, GMP, or any library other than that provide
+    You may not use Boost, GMP, or any library other than that provided
     by the C++ Standard Library.
 
 I don't know C++.  I haven't ever written C++ profesionally, and I
@@ -18,11 +18,11 @@ haven't actually *looked* at C++ since 1999 or so.  As a professional,
 I'm aware of what's going on in the zeitgeist, and at my job at Spiral
 Genetics I interacted with two very talented C++ developers a lot, so I
 was aware of things like the emerging C++ Standard Library and RAII and
-so forth.  I didn't know what they *meant*, but I had heard them.  I've
-also been aware of the emerging standards in C++11 and C++14, mostly
-thanks to Slashdot, Lobsters, and their ilk (don't read the comments,
-don't **ever** read the comments), so I'd *heard* about auto_ptr and
-C++11 lambdas and the like.
+so forth.  I didn't know what they *meant*, but I had heard of them.
+I've also been aware of the emerging standards in C++11 and C++14,
+mostly thanks to Slashdot, Hacker News, and their ilk (don't read the
+comments, don't **ever** read the comments), so I'd *heard* about
+auto_ptr and C++11 lambdas and the like.
 
 It took about an hour of googling to get up to speed on things like
 namespaces, containers, for_each, lambdas, and the like.  I really like
@@ -31,7 +31,7 @@ the new unique\_ptr construction.  That's very nice.
 My basic solution degrades to 4th-grade mathematics: Break the
 multiplicand up into a list of single digits, multiply each digit
 with the multiplier, then redistribute the values up the tens, hundreds,
-etc. etc.  This solution is not particularly fast or space-efficient,
+etc., etc.  This solution is not particularly fast or space-efficient,
 but it has the virtue of being comprehensible by any ten-year-old.
 
 As usual, I've provided a test suite, as well as a pair of utility
diff --git a/src/accessories.cpp b/src/accessories.cpp
index 38bbe4d..821d7c1 100644
--- a/src/accessories.cpp
+++ b/src/accessories.cpp
@@ -2,6 +2,8 @@
 
 namespace cheapgmp {
 
+  using namespace std;
+
   ulong tolong(const gmrep in) {
     int pos = 1;
     ulong ret = 0;
diff --git a/src/accessories.hpp b/src/accessories.hpp
index 102bfeb..5f41bdc 100644
--- a/src/accessories.hpp
+++ b/src/accessories.hpp
@@ -3,9 +3,7 @@
 #include <string>
 #include <iostream>
 
-using namespace std;
-
 namespace cheapgmp {
-        wstring tostring(gmrep);
-        ulong tolong(gmrep);
+  std::wstring tostring(gmrep);
+  ulong tolong(gmrep);
 }
diff --git a/src/cheapgmp.cpp b/src/cheapgmp.cpp
index a4252bb..7905932 100644
--- a/src/cheapgmp.cpp
+++ b/src/cheapgmp.cpp
@@ -1,8 +1,9 @@
 #include "cheapgmp.hpp"
 
-using namespace std;
-
 namespace cheapgmp {
+
+  using namespace std;
+
   namespace {
 
     /* Given a list representing a decimal number as a multiplicand,
diff --git a/src/cheapgmp.hpp b/src/cheapgmp.hpp
index a62397d..16f8c4f 100644
--- a/src/cheapgmp.hpp
+++ b/src/cheapgmp.hpp
@@ -2,11 +2,9 @@
 #include <list>
 #include <algorithm>
 
-using namespace std;
-
 namespace cheapgmp {
-  typedef list<ulong> lmrep;
-  typedef unique_ptr<lmrep> gmrep;
+  typedef std::list<ulong> lmrep;
+  typedef std::unique_ptr<lmrep> gmrep;
   gmrep makepower(const ulong, const ulong);
 }
 
diff --git a/tests/test_cheapgmp.cpp b/tests/test_cheapgmp.cpp
index afea76b..ae70822 100644
--- a/tests/test_cheapgmp.cpp
+++ b/tests/test_cheapgmp.cpp
@@ -6,7 +6,7 @@
 
 using namespace cheapgmp;
 
-wstring sample123 = L"72367033806371673149109894141163778628811792657571658906010558390395870363798401744095280686155507736404921657070284961721828960592977909542637098897697223102622628566787654091327825453991595140205701412961364188732408936197890553699715836951569999800431957769217006743321026257517932764164662319487914962533302741368207211189494615326552790667720411285474162636765168907211924134973374304496019635376665858559941735703924836467756917247995469583487467791524582153744522107597865277798136080074161485280424274076931083994487111719562249702540362855712911132265966235754355353516703339043001506118520760359577737869472018617942120590873170710805078696371738906375721785723";
+std::wstring sample123 = L"72367033806371673149109894141163778628811792657571658906010558390395870363798401744095280686155507736404921657070284961721828960592977909542637098897697223102622628566787654091327825453991595140205701412961364188732408936197890553699715836951569999800431957769217006743321026257517932764164662319487914962533302741368207211189494615326552790667720411285474162636765168907211924134973374304496019635376665858559941735703924836467756917247995469583487467791524582153744522107597865277798136080074161485280424274076931083994487111719562249702540362855712911132265966235754355353516703339043001506118520760359577737869472018617942120590873170710805078696371738906375721785723";
 
 ulong sample6 = 46656;