52         assert(m.begin()->second == 1.5);  in main()
54         assert(std::next(m.begin())->second == 2.5);  in main()
56         assert(std::next(m.begin(), 2)->second == 3.5);  in main()
58         assert(std::next(m.begin(), 3)->second == 5.5);  in main()
60         assert(std::next(m.begin(), 4)->second == 6.5);  in main()
62         assert(std::next(m.begin(), 5)->second == 7.5);  in main()
64         assert(std::next(m.begin(), 6)->second == 8.5);  in main()
70         assert(m.begin()->second == 2.5);  in main()
72         assert(std::next(m.begin())->second == 3.5);  in main()
74         assert(std::next(m.begin(), 2)->second == 5.5);  in main()
76         assert(std::next(m.begin(), 3)->second == 6.5);  in main()
78         assert(std::next(m.begin(), 4)->second == 7.5);  in main()
80         assert(std::next(m.begin(), 5)->second == 8.5);  in main()
86         assert(m.begin()->second == 2.5);  in main()
88         assert(std::next(m.begin())->second == 3.5);  in main()
90         assert(std::next(m.begin(), 2)->second == 5.5);  in main()
92         assert(std::next(m.begin(), 3)->second == 6.5);  in main()
94         assert(std::next(m.begin(), 4)->second == 7.5);  in main()
100         assert(m.begin()->second == 2.5);  in main()
102         assert(std::next(m.begin())->second == 5.5);  in main()
104         assert(std::next(m.begin(), 2)->second == 6.5);  in main()
106         assert(std::next(m.begin(), 3)->second == 7.5);  in main()
112         assert(m.begin()->second == 2.5);  in main()
114         assert(std::next(m.begin())->second == 5.5);  in main()
116         assert(std::next(m.begin(), 2)->second == 7.5);  in main()
122         assert(m.begin()->second == 2.5);  in main()
124         assert(std::next(m.begin())->second == 5.5);  in main()
130         assert(m.begin()->second == 5.5);  in main()
159         assert(m.begin()->second == 1.5);  in main()
161         assert(std::next(m.begin())->second == 2.5);  in main()
163         assert(std::next(m.begin(), 2)->second == 3.5);  in main()
165         assert(std::next(m.begin(), 3)->second == 5.5);  in main()
167         assert(std::next(m.begin(), 4)->second == 6.5);  in main()
169         assert(std::next(m.begin(), 5)->second == 7.5);  in main()
171         assert(std::next(m.begin(), 6)->second == 8.5);  in main()
177         assert(m.begin()->second == 2.5);  in main()
179         assert(std::next(m.begin())->second == 3.5);  in main()
181         assert(std::next(m.begin(), 2)->second == 5.5);  in main()
183         assert(std::next(m.begin(), 3)->second == 6.5);  in main()
185         assert(std::next(m.begin(), 4)->second == 7.5);  in main()
187         assert(std::next(m.begin(), 5)->second == 8.5);  in main()
193         assert(m.begin()->second == 2.5);  in main()
195         assert(std::next(m.begin())->second == 3.5);  in main()
197         assert(std::next(m.begin(), 2)->second == 5.5);  in main()
199         assert(std::next(m.begin(), 3)->second == 6.5);  in main()
201         assert(std::next(m.begin(), 4)->second == 7.5);  in main()
207         assert(m.begin()->second == 2.5);  in main()
209         assert(std::next(m.begin())->second == 5.5);  in main()
211         assert(std::next(m.begin(), 2)->second == 6.5);  in main()
213         assert(std::next(m.begin(), 3)->second == 7.5);  in main()
219         assert(m.begin()->second == 2.5);  in main()
221         assert(std::next(m.begin())->second == 5.5);  in main()
223         assert(std::next(m.begin(), 2)->second == 7.5);  in main()
229         assert(m.begin()->second == 2.5);  in main()
231         assert(std::next(m.begin())->second == 5.5);  in main()
237         assert(m.begin()->second == 5.5);  in main()