View difference between Paste ID: pa9UFUq4 and EnBFnfkZ

-#include <cmath>
+#include <cstdint>
 #include <chrono>
 #include <iostream>
 #include <atomic>
-int SigmaN(int n)
+#include <thread>
 #include <vector>
-	return n * (n + 1) / 2;
+
 using namespace std;
 using namespace std::chrono;
 typedef duration<float> fsec;
 
 auto started = steady_clock::now();
 atomic<int> counter = 0;
 
 inline int GetNumber()
 {
 	return ++counter;
 }
 
 inline int64_t SigmaN(int64_t n) // to avoid overflow
 {
 	return n * (n + 1) >> 1;
 }
 
 int SerialN(int n)
 {
 	for (int i = 0; i < n ; ++i)
 	{
 		if (SigmaN(i) == n)
 			return i;
 	}
 
 	return 0;
-	using namespace std;
+
-	using namespace std::chrono;
+
-
+
-  typedef duration<float> fsec;
+
 	if (n < 0)
-	int number = 1;
+
 
-	auto started = steady_clock::now();
+
 
-	while (0 < number) // until overflow
+
 					root : 0;
 }
 
 void Work()
 {
 	while (true)
 	{
 		int number = GetNumber();
 
-				printf("%d = %d^2 = sum(1..%d)\n", number, root, last_of_serial);
+		if (0 > number)
 			break; // until overflow
 
-				auto elapsed = duration_cast<fsec>(steady_clock::now() - started);
+
-				printf("%0.2f sec\n", elapsed.count());
+
 		if (0 < root)
 		{
 			auto last_of_serial = SerialN(number);
-		++number;
+
 			if (0 < last_of_serial)
 			{
 				//print elapsed time
 				printf("%d = %d^2 = sum(1..%d)\n %0.2f sec\n",
 					number, root, last_of_serial,
 					duration_cast<fsec>(steady_clock::now() - started).count()
 					);
 			}
 		}
 	}//while
 }
 
 
 
 int main (void)
 {
 	const size_t sizeofThread = 9;
 
 	vector<thread> workers;
 
 	for (int i = 0; i < sizeofThread; ++i)
 	{
 		workers.push_back(thread(Work));
 	}
 
 	for (auto& t : workers)
 		t.join();
 }