speed ts up

include/utils.hpp

@@ -1,11 +1,10 @@
 #ifndef UTILS_HPP
 #define UTILS_HPP
 
-
+#include <array>
 #include <charconv>
 #include <cstdint>
 #include <filesystem>
-#include <format>
 #include <string>
 
 namespace utils {
@@ -39,9 +38,12 @@ inline void fastReadNum(const std::string& path, char (&buf)[N], T& result) {
 }
 
 inline std::string pNum(const auto num, const uint8_t decs = 0) {
-    return std::format("{:.{}f}", num, decs);
+    static std::array<char, 20> buf;
+    auto [ptr, ec] = std::to_chars(buf.data(), buf.data() + buf.size(), num, std::chars_format::fixed, decs);
+    return std::string(buf.data(), ptr);
 }
 
+
 inline bool fileExists(const std::string_view& path) {
     return std::filesystem::exists(path);
 }