Add <cassert> header include

This fixes some Linux build failures.

2015/puzzle-04-01.cc

@@ -15,7 +15,7 @@ auto md5(MD5Digest& digest, std::string const& s) -> unsigned int
 
   EVP_MD_CTX* md_context{EVP_MD_CTX_new()};
   assert(md_context != nullptr);
-  EVP_DigestInit_ex2(md_context, md, nullptr);
+  EVP_DigestInit_ex(md_context, md, nullptr);
   EVP_DigestUpdate(md_context, s.data(), s.length());
   EVP_DigestFinal_ex(md_context, digest.data(), &md_len);
   return md_len;
@@ -40,4 +40,4 @@ auto main() -> int
   }
 
   return 0;
-}
+}

2015/puzzle-04-02.cc

@@ -15,7 +15,7 @@ auto md5(MD5Digest& digest, std::string const& s) -> unsigned int
 
   EVP_MD_CTX* md_context{EVP_MD_CTX_new()};
   assert(md_context != nullptr);
-  EVP_DigestInit_ex2(md_context, md, nullptr);
+  EVP_DigestInit_ex(md_context, md, nullptr);
   EVP_DigestUpdate(md_context, s.data(), s.length());
   EVP_DigestFinal_ex(md_context, digest.data(), &md_len);
   return md_len;
@@ -40,4 +40,4 @@ auto main() -> int
   }
 
   return 0;
-}
+}

2015/puzzle-22-01.cc

@@ -1,4 +1,5 @@
 #include <algorithm>
+#include <cassert>
 #include <cstdlib>
 #include <iostream>
 #include <limits>
@@ -233,4 +234,4 @@ int main()
 
   std::cout << "Best cost " << best_cost << "\n";
   return 1;
-}
+}

2015/puzzle-22-02.cc

@@ -1,4 +1,5 @@
 #include <algorithm>
+#include <cassert>
 #include <cstdlib>
 #include <iostream>
 #include <limits>
@@ -231,4 +232,4 @@ int main()
 
   std::cout << "Best cost " << best_cost << "\n";
   return 1;
-}
+}

2015/puzzle-23-01.cc

@@ -1,4 +1,5 @@
 #include <algorithm>
+#include <cassert>
 #include <cstdlib>
 #include <iostream>
 #include <limits>
@@ -135,4 +136,4 @@ int main()
     state.execute(instructions[state.pc_]);
   }
   std::cout << "a = " << state.a_ << "\nb = " << state.b_ << '\n';
-}
+}

2015/puzzle-23-02.cc

@@ -1,4 +1,5 @@
 #include <algorithm>
+#include <cassert>
 #include <cstdlib>
 #include <iostream>
 #include <limits>
@@ -135,4 +136,4 @@ int main()
     state.execute(instructions[state.pc_]);
   }
   std::cout << "a = " << state.a_ << "\nb = " << state.b_ << '\n';
-}
+}

2015/puzzle-25-01.cc

@@ -1,3 +1,4 @@
+#include <cassert>
 #include <cstdint>
 #include <iostream>
 #include <string>
@@ -44,4 +45,4 @@ int main()
   std::cout << "Target row " << target_row << " column " << target_column << '\n';
   std::cout << "Row " << row << " column " << column << " num " << num << '\n';
   return 0;
-}
+}

2016/puzzle-01-01.cc

@@ -2,6 +2,7 @@
 // Created by Matthew Gretton-Dann on 02/12/2021.
 //
 
+#include <cassert>
 #include <iostream>
 #include <string>
 
@@ -66,4 +67,4 @@ auto main() -> int
   vert = std::abs(vert);
   std::cout << "We end up " << horiz << " + " << vert << " = " << horiz + vert << " blocks away.\n";
   return 0;
-}
+}

2016/puzzle-01-02.cc

@@ -2,6 +2,7 @@
 // Created by Matthew Gretton-Dann on 02/12/2021.
 //
 
+#include <cassert>
 #include <iostream>
 #include <set>
 #include <string>
@@ -55,4 +56,4 @@ auto main() -> int
   }
   std::cerr << "Didn't find an answer.\n";
   return 1;
-}
+}

2016/puzzle-03-01.cc

@@ -3,6 +3,7 @@
 //
 
 #include <array>
+#include <cassert>
 #include <cctype>
 #include <iostream>
 #include <string>
@@ -45,4 +46,4 @@ auto main() -> int
   }
   std::cout << "Number of valid triangles: " << valid << '\n';
   return 0;
-}
+}

2016/puzzle-03-02.cc

@@ -3,6 +3,7 @@
 //
 
 #include <array>
+#include <cassert>
 #include <cctype>
 #include <iostream>
 #include <string>
@@ -63,4 +64,4 @@ auto main() -> int
       }
     }
   }
-}
+}

2016/puzzle-04-01.cc

@@ -2,6 +2,7 @@
 // Created by Matthew Gretton-Dann on 03/12/2021.
 //
 
+#include <cassert>
 #include <iostream>
 #include <map>
 #include <set>
@@ -87,4 +88,4 @@ auto main() -> int
 
   std::cout << "Sum of sector numbers: " << sum << '\n';
   return 0;
-}
+}

2016/puzzle-04-02.cc

@@ -2,6 +2,7 @@
 // Created by Matthew Gretton-Dann on 03/12/2021.
 //
 
+#include <cassert>
 #include <iostream>
 #include <map>
 #include <set>
@@ -103,4 +104,4 @@ auto main() -> int
 
   std::cout << "Sum of sector numbers: " << sum << '\n';
   return 0;
-}
+}

2016/puzzle-08-01.cc

@@ -3,6 +3,7 @@
 //
 
 #include <array>
+#include <cassert>
 #include <iostream>
 #include <numeric>
 #include <string>
@@ -97,4 +98,4 @@ auto main() -> int
 
   std::cout << "Number of lit fields: " << display.lit_count() << '\n';
   return 0;
-}
+}

2016/puzzle-08-02.cc

@@ -3,6 +3,7 @@
 //
 
 #include <array>
+#include <cassert>
 #include <iostream>
 #include <numeric>
 #include <string>
@@ -111,4 +112,4 @@ auto main() -> int
   std::cout << "Number of lit fields: " << display.lit_count() << '\n';
   display.print(std::cout);
   return 0;
-}
+}

2016/puzzle-09-01.cc

@@ -2,6 +2,7 @@
 // Created by Matthew Gretton-Dann on 05/12/2021.
 //
 
+#include <cassert>
 #include <iostream>
 #include <string>
 
@@ -56,4 +57,4 @@ auto main() -> int
   auto output{decompress(input)};
   std::cout << "Output length: " << output.size() << '\n';
   return 0;
-}
+}

2016/puzzle-09-02.cc

@@ -2,6 +2,7 @@
 // Created by Matthew Gretton-Dann on 05/12/2021.
 //
 
+#include <cassert>
 #include <iostream>
 #include <string>
 
@@ -53,4 +54,4 @@ auto main() -> int
   auto output{decompress_length(input)};
   std::cout << "Output length: " << output << '\n';
   return 0;
-}
+}

2016/puzzle-10-01.cc

@@ -3,6 +3,7 @@
 //
 
 #include <algorithm>
+#include <cassert>
 #include <iostream>
 #include <regex>
 #include <string>
@@ -129,4 +130,4 @@ auto main() -> int
       bot.clear();
     }
   }
-}
+}

2016/puzzle-10-02.cc

@@ -3,6 +3,7 @@
 //
 
 #include <algorithm>
+#include <cassert>
 #include <iostream>
 #include <regex>
 #include <string>
@@ -127,4 +128,4 @@ auto main() -> int
   }
 
   std::cout << "Result: " << outputs[0] * outputs[1] * outputs[2] << '\n';
-}
+}

2016/puzzle-14-01.cc

@@ -3,6 +3,7 @@
 //
 
 #include <array>
+#include <cassert>
 #include <iostream>
 #include <string>
 #include <string_view>

2016/puzzle-14-02.cc

@@ -3,6 +3,7 @@
 //
 
 #include <array>
+#include <cassert>
 #include <iostream>
 #include <string>
 #include <string_view>

2016/puzzle-17-01.cc

@@ -3,6 +3,7 @@
 //
 
 #include <array>
+#include <cassert>
 #include <iostream>
 #include <set>
 #include <string>

2016/puzzle-17-02.cc

@@ -3,6 +3,7 @@
 //
 
 #include <array>
+#include <cassert>
 #include <iostream>
 #include <set>
 #include <string>

2016/puzzle-20-02.cc

@@ -1,3 +1,4 @@
+#include <cassert>
 #include <iomanip>
 #include <iostream>
 #include <numeric>
@@ -98,4 +99,4 @@ auto main() -> int
   std::cout << "First available IP address: " << inverse.lowest() << '\n';
   std::cout << "Number of available IP addresses: " << inverse.count() << '\n';
   return 0;
-}
+}

2021/puzzle-04-01.cc

@@ -3,6 +3,7 @@
 //
 
 #include <array>
+#include <cassert>
 #include <iomanip>
 #include <iostream>
 #include <numeric>
@@ -147,4 +148,4 @@ auto main() -> int
 
   std::cerr << "No bingo!\n";
   return 1;
-}
+}

2021/puzzle-04-02.cc

@@ -3,6 +3,7 @@
 //
 
 #include <array>
+#include <cassert>
 #include <iomanip>
 #include <iostream>
 #include <numeric>
@@ -151,4 +152,4 @@ auto main() -> int
   std::cout << "\nBINGO " << score << " * " << *num << " = " << score * *num << '\n';
   cards[0].print(std::cout);
   return 0;
-}
+}

2021/puzzle-05-02.cc

@@ -2,6 +2,7 @@
 // Created by Matthew Gretton-Dann on 05/12/2021.
 //
 
+#include <cassert>
 #include <iostream>
 #include <map>
 #include <numeric>
@@ -69,4 +70,4 @@ auto main() -> int
 
   std::cout << "Danger spots: " << danger_count << '\n';
   return 0;
-}
+}

2021/puzzle-08-02.cc

@@ -3,6 +3,7 @@
 //
 
 #include <array>
+#include <cassert>
 #include <iostream>
 #include <string>
 #include <vector>
@@ -219,4 +220,4 @@ auto main() -> int
 
   std::cout << "Total: " << total << '\n';
   return 0;
-}
+}