#include <chrono>
#include <stdio.h>
int main()
{
using namespace std::chrono;
using clock = steady_clock;
clock::time_point start = clock::now();
long long s = 0;
for (long long i = 1; i <= 1000000000; ++i) s += i;
clock::time_point stop = clock::now();
auto diff = duration_cast<duration<double>>(stop - start).count();
printf("%lld \n", s);
printf("%f seconds", diff);
return 0;
}
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