42     std::chrono::seconds s1(3);  in main()
43     std::chrono::seconds s2(3);  in main()
50     std::chrono::seconds s1(3);  in main()
51     std::chrono::seconds s2(4);  in main()
58     std::chrono::milliseconds s1(3);  in main()
59     std::chrono::microseconds s2(3000);  in main()
66     std::chrono::milliseconds s1(3);  in main()
67     std::chrono::microseconds s2(4000);  in main()
74     std::chrono::duration<int, std::ratio<2, 3> > s1(9);  in main()
75     std::chrono::duration<int, std::ratio<3, 5> > s2(10);  in main()
82     std::chrono::duration<int, std::ratio<2, 3> > s1(10);  in main()
83     std::chrono::duration<int, std::ratio<3, 5> > s2(9);  in main()
90     std::chrono::duration<int, std::ratio<2, 3> > s1(9);  in main()
91     std::chrono::duration<double, std::ratio<3, 5> > s2(10);  in main()
99     constexpr std::chrono::seconds s1(3);  in main()
100     constexpr std::chrono::seconds s2(3);  in main()
107     constexpr std::chrono::seconds s1(3);  in main()
108     constexpr std::chrono::seconds s2(4);  in main()
115     constexpr std::chrono::milliseconds s1(3);  in main()
116     constexpr std::chrono::microseconds s2(3000);  in main()
123     constexpr std::chrono::milliseconds s1(3);  in main()
124     constexpr std::chrono::microseconds s2(4000);  in main()
131     constexpr std::chrono::duration<int, std::ratio<2, 3> > s1(9);  in main()
132     constexpr std::chrono::duration<int, std::ratio<3, 5> > s2(10);  in main()
139     constexpr std::chrono::duration<int, std::ratio<2, 3> > s1(10);  in main()
140     constexpr std::chrono::duration<int, std::ratio<3, 5> > s2(9);  in main()
147     constexpr std::chrono::duration<int, std::ratio<2, 3> > s1(9);  in main()
148     constexpr std::chrono::duration<double, std::ratio<3, 5> > s2(10);  in main()