diff --git a/CMakeLists.txt b/CMakeLists.txt
index feb914d..5932557 100644
--- a/CMakeLists.txt
+++ b/CMakeLists.txt
@@ -7,7 +7,7 @@ find_package(PkgConfig REQUIRED)
 
 pkg_check_modules(Jemalloc REQUIRED jemalloc)
 
-set(LINKER_OPTIONS -Wl,--sort-common,--as-needed,--gc-sections,--strip-all)
+set(LINKER_OPTIONS -Wl,--sort-common,--as-needed#[[,--gc-sections,--strip-all]])
 
 set(COMPILE_FLAGS
     -pipe
@@ -18,24 +18,27 @@ set(COMPILE_FLAGS
     -Wall
     -Wextra
     -Wpedantic
-    -ffunction-sections
-    -fdata-sections
     -funroll-loops
-    -fno-builtin-malloc -fno-builtin-calloc -fno-builtin-realloc -fno-builtin-free
+    -fuse-ld=gold
+
 )
 set(LINKER_OPTIONS
     ${LINKER_OPTIONS}
     -fuse-ld=gold
 )
 
-if (${CMAKE_CXX_COMPILER_ID} STREQUAL "Clang")
-    set(COMPILE_FLAGS -stdlib=libc++ -Wmove ${COMPILE_FLAGS} -fwhole-program-vtables)
-    set(LINKER_OPTIONS ${LINKER_OPTIONS} -fwhole-program-vtables)
-    set(LINKER_FLAGS ${LINKER_FLAGS} c++)
-elseif (${CMAKE_CXX_COMPILER_ID} STREQUAL "GNU")
-    set(COMPILE_FLAGS ${COMPILE_FLAGS} -fuse-ld=gold -fdevirtualize-at-ltrans)
+set(LINKER_FLAGS stdc++)
+
+if (${CMAKE_BUILD_TYPE} STREQUAL "Release")
+    set(COMPILE_FLAGS
+        ${COMPILE_FLAGS}
+        -ffunction-sections
+        -fdata-sections
+        -fdevirtualize-at-ltrans
+        -fno-builtin-malloc -fno-builtin-calloc -fno-builtin-realloc -fno-builtin-free
+    )
     set(LINKER_OPTIONS ${LINKER_OPTIONS} -fdevirtualize-at-ltrans)
-    set(LINKER_FLAGS ${LINKER_FLAGS} stdc++)
+    set(LINKER_FLAGS ${LINKER_FLAGS} ${Jemalloc_LIBRARIES})
 endif ()
 
 
@@ -51,9 +54,15 @@ set_target_properties(AdventOfCode2023 pb_1 PROPERTIES
                       INTERPROCEDURAL_OPTIMIZATION ON
                       UNITY_BUILD ON
 )
+
 target_compile_definitions(AdventOfCode2023 PUBLIC $<$<AND:$<CONFIG:Debug>,$<STREQUAL:$<CXX_COMPILER_ID>,GNU>>:_GLIBCXX_DEBUG>)
 target_compile_definitions(pb_1 PUBLIC $<$<AND:$<CONFIG:Debug>,$<STREQUAL:$<CXX_COMPILER_ID>,GNU>>:_GLIBCXX_DEBUG>)
-target_compile_options(AdventOfCode2023 PUBLIC ${COMPILE_OPTIONS})
+
+target_compile_options(AdventOfCode2023 PUBLIC ${COMPILE_FLAGS})
+target_compile_options(pb_1 PUBLIC ${COMPILE_FLAGS})
+
 target_link_options(AdventOfCode2023 PUBLIC ${LINKER_OPTIONS})
-target_link_libraries(AdventOfCode2023 PUBLIC pb_1 ${Jemalloc_LIBRARIES})
-target_link_libraries(pb_1 PUBLIC ${Jemalloc_LIBRARIES})
+target_link_options(pb_1 PUBLIC ${LINKER_OPTIONS})
+
+target_link_libraries(AdventOfCode2023 PUBLIC pb_1 ${LINKER_FLAGS})
+target_link_libraries(pb_1 PUBLIC ${LINKER_FLAGS})
diff --git a/inputs/pb1_p2_sample.txt b/inputs/pb1_p2_sample.txt
index f90c606..0ec156b 100644
--- a/inputs/pb1_p2_sample.txt
+++ b/inputs/pb1_p2_sample.txt
@@ -1,6 +1,6 @@
-abcone2threexyz
-two1nine
 eightwothree
+two1ninethr
+abcone2threexyz
 xtwone3four
 4nineeightseven2
 zoneight234
diff --git a/pb_1/problem_1.cpp b/pb_1/problem_1.cpp
index dc15c67..1d19246 100644
--- a/pb_1/problem_1.cpp
+++ b/pb_1/problem_1.cpp
@@ -96,33 +96,45 @@ namespace pb1 {
         line_with_numbers.reserve(toSearch.size());
         word.reserve(sizeof("seven") - 1);
         for (int i = 0; i < toSearch.size(); ++i) {
-            const int second_letter = i + 1, third = i + 2, fourth = i + 3, fifth = i + 4, sixth = i + 5;
-            const std::uint32_t nb_characters_remaining = toSearch.size() - i - 1;
+            const std::uint32_t nb_characters_remaining = toSearch.size() - i;
             switch (toSearch[i]) {
                 case 'o': {
-                    if (nb_characters_remaining < digitLetters[0].size()) {
-                        line_with_numbers.append(toSearch.substr(i));
-                        continue;
-                    }
-                    word.append(toSearch.substr(i, digitLetters[0].size()));
-                    if (!numbersSet.contains(word)) {
-                        const auto pos = word.find_first_of(digits);
-                        if (pos != std::string::npos) {
-                            line_with_numbers.push_back(word[pos]);
+                    if (nb_characters_remaining >= digitLetters[0].size()) {
+                        word.append(toSearch.substr(i, digitLetters[0].size()));
+                        if (numbersSet.contains(word)) {
+                            line_with_numbers.push_back(numbersSet.at(word));
                         }
-                    } else {
-                        line_with_numbers.push_back(numbersSet.at(word));
-                        ++i;
                     }
                     word.clear();
                 }
                     break;
                 case 't': {
-                    if (nb_characters_remaining < digitLetters[2].size()) {
+                    if (nb_characters_remaining >= digitLetters[1].size()) {
+                        // TODO: problème si on a two mais là ça ajoute + de caractère…
+                        const auto number_two = toSearch.substr(i, digitLetters[1].size());
+                        const auto number_three = [&]() -> std::string_view {
+                            const auto tmp = toSearch.substr(i);
+                            if (tmp.size() <= digitLetters[2].size()) {
+                                return toSearch.substr(i);
+                            } else {
+                                return toSearch.substr(i, digitLetters[2].size());
+                            }
+                        }();
+                        if (numbersSet.contains(number_two) or numbersSet.contains(number_three)) {
+                            word.append(numbersSet.contains(number_two) ? number_two : number_three);
+                            line_with_numbers.push_back(numbersSet.at(word));
+                        }
+                    }
+                    word.clear();
+                }
+                    break;
+                case 'f': {
+                    // length five and four are equal
+                    if (nb_characters_remaining < digitLetters[3].size()) {
                         line_with_numbers.append(toSearch.substr(i));
                         continue;
                     }
-                    word.append(toSearch.substr(i, digitLetters[2].size()));
+                    word.append(toSearch.substr(i, digitLetters[3].size()));
                     if (!numbersSet.contains(word)) {
                         const auto pos = word.find_first_of(digits);
                         if (pos != std::string::npos) {
@@ -130,24 +142,79 @@ namespace pb1 {
                         }
                     } else {
                         line_with_numbers.push_back(numbersSet.at(word));
-                        i += 2;
                     }
                     word.clear();
                 }
                     break;
-                case 'f':
+                case 's': {
+                    if (nb_characters_remaining < digitLetters[6].size()) {
+                        line_with_numbers.append(toSearch.substr(i));
+                        continue;
+                    }
+                    const auto number_six = toSearch.substr(i, digitLetters[5].size());
+                    const auto number_seven = toSearch.substr(i, digitLetters[6].size());
+                    if (!numbersSet.contains(number_six) and !numbersSet.contains(number_seven)) {
+                        const auto pos = number_seven.find_first_of(digits);
+                        if (pos != std::string::npos) {
+                            line_with_numbers.push_back(word[pos]);
+                        }
+                    } else {
+                        line_with_numbers.push_back(numbersSet.at(word));
+                    }
+                    word.clear();
+                }
                     break;
-                case 's':
+                case 'e': {
+                    if (nb_characters_remaining < digitLetters[7].size()) {
+                        line_with_numbers.append(toSearch.substr(i));
+                        continue;
+                    }
+                    word.append(toSearch.substr(i, digitLetters[7].size()));
+                    if (!numbersSet.contains(word)) {
+                        const auto pos = word.find_first_of(digits);
+                        if (pos != std::string::npos) {
+                            line_with_numbers.push_back(word[pos]);
+                        }
+                    } else {
+                        line_with_numbers.push_back(numbersSet.at(word));
+                    }
+                    word.clear();
+                }
                     break;
-                case 'e':
+                case 'n': {
+                    if (nb_characters_remaining < digitLetters.back().size()) {
+                        line_with_numbers.append(toSearch.substr(i));
+                        continue;
+                    }
+                    word.append(toSearch.substr(i, digitLetters.back().size()));
+                    if (!numbersSet.contains(word)) {
+                        const auto pos = word.find_first_of(digits);
+                        if (pos != std::string::npos) {
+                            line_with_numbers.push_back(word[pos]);
+                        }
+                    } else {
+                        line_with_numbers.push_back(numbersSet.at(word));
+                    }
+                    word.clear();
+                }
                     break;
-                case 'n':
+                case '0':
+                case '1':
+                case '2':
+                case '3':
+                case '4':
+                case '5':
+                case '6':
+                case '7':
+                case '8':
+                case '9':
+                    line_with_numbers.push_back(toSearch[i]);
                     break;
                 default:
                     if ((toSearch[i] - '0') < 10) {
                         line_with_numbers.push_back(toSearch[i]);
                     }
-                    continue;
+                    break;
             }
         }
         if (!line_with_numbers.empty()) {