Why unordered_map is slower than map in some cases?

Правка en3, от hmrockstar, 2017-02-24 11:39:28

Hello Everybody!

For "ICM Technex 2017 and Codeforces Round #400 (Div. 1 + Div. 2, combined)" Problem C the given n is 105 and the max possible sum is 10 5 * 10 9 i.e., 1014. For the worst case, my code's complexity is: log(1014)*n. And in worst case it will be approximately 50*105 . I was expecting that my code will get Accepted easily, coz given time limit is 2.5 sec, but its exceeding time limit on 101 test case which is 100000 2 .

Isn't it possible to execute 5*106 in 2.5 sec?

Why unordered map is taking more time in comparison with map!

Thank you very much for reading!

Link to submission: 24944382

Теги #timelimit

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  Rev. Язык Кто Когда Δ Комментарий
en3 Английский hmrockstar 2017-02-24 11:39:28 50
en2 Английский hmrockstar 2017-02-23 21:59:37 65
en1 Английский hmrockstar 2017-02-23 21:49:39 718 Initial revision (published)