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ContestId |
Name |
Phase |
Frozen |
Duration (Seconds) |
Relative Time |
Start Time |
---|---|---|---|---|---|---|
1500 | Codeforces Round 707 (Div. 1, based on Moscow Open Olympiad in Informatics) | FINISHED | False | 9000 | 121553663 | March 13, 2021, 9:05 a.m. |
Solved$ |
Index |
Name |
Type |
Tags |
Community Tag |
Rating |
---|---|---|---|---|---|---|
( 284 ) | E | Subset Trick | PROGRAMMING | binary search data structures | 3300 |
B"Vanya invented an interesting trick with a set of integers. Let an illusionist have a set of positive integers S . He names a positive integer x . Then an audience volunteer must choose some subset (possibly, empty) of S without disclosing it to the illusionist. The volunteer tells the illusionist the size of the chosen subset. And here comes the trick: the illusionist guesses whether the sum of the subset elements does not exceed x . The sum of elements of an empty subset is considered to be 0 . Vanya wants to prepare the trick for a public performance. He prepared some set of distinct positive integers S . Vasya wants the trick to be successful. He calls a positive number x unsuitable, if he can't be sure that the trick would be successful for every subset a viewer can choose. Vanya wants to count the number of unsuitable integers for the chosen set S . Vanya plans to try different sets S . He wants you to write a program that finds the number of unsuitable integers for the initial set S , and after each change to the set S . Vanya will make q changes to the set, and each change is one of the following two types: The first line contains two integers n , q ( 1 <= q n, q <= q 200 ,000 ) -- the size of the initial set S and the number of changes. The next line contains n distinct integers s_1, s_2, ldots, s_n ( 1 <= q s_i <= q 10^{13} ) -- the initial elements of S . Each of the following q lines contain two integers t_i , a_i ( 1 <= q t_i <= q 2 , 1 <= q a_i <= q 10^{13} ), describing a change: Print q + 1 lines. In the first line print the number of unsuitable integers for the initial set S . In the next q lines print the number of unsuitable integers for S after each change. In the first example the initial set is S = {1, 2, 3 } . For this set the trick can be unsuccessful for x in {1,"... |
Codeforces Round #707 Editorial |
Submission Id |
Author(s) |
Index |
Submitted |
Verdict |
Language |
Test Set |
Tests Passed |
Time taken (ms) |
Memory Consumed (bytes) |
Tags |
Rating |
---|---|---|---|---|---|---|---|---|---|---|---|
109933257 | TiwAirOAO | E | March 14, 2021, 3:36 a.m. | OK | GNU C++14 | TESTS | 87 | 1965 | 87142400 | 3300 | |
109894668 | Radewoosh | E | March 13, 2021, 1:25 p.m. | OK | GNU C++14 | TESTS | 87 | 2339 | 113152000 | 3300 | |
109883572 | Miracle03 | E | March 13, 2021, 11:24 a.m. | OK | GNU C++17 | TESTS | 87 | 2262 | 60416000 | 3300 | |
109922548 | rainboy | E | March 13, 2021, 8 p.m. | OK | GNU C++17 | TESTS | 87 | 2371 | 19251200 | 3300 | |
109932089 | Isoeasy | E | March 14, 2021, 3:01 a.m. | OK | GNU C++17 | TESTS | 87 | 2698 | 304640000 | 3300 | |
109912699 | Egor.Lifar | E | March 13, 2021, 4:59 p.m. | OK | GNU C++17 | TESTS | 87 | 2994 | 104960000 | 3300 | |
109880186 | jiangly | E | March 13, 2021, 11:11 a.m. | OK | GNU C++17 (64) | TESTS | 87 | 1357 | 45670400 | 3300 | |
109869658 | tourist | E | March 13, 2021, 10:29 a.m. | OK | GNU C++17 (64) | TESTS | 87 | 1684 | 50790400 | 3300 | |
109869772 | ecnerwala | E | March 13, 2021, 10:29 a.m. | OK | GNU C++17 (64) | TESTS | 87 | 1980 | 19251200 | 3300 | |
109882627 | maroonrk | E | March 13, 2021, 11:21 a.m. | OK | GNU C++17 (64) | TESTS | 87 | 2168 | 37273600 | 3300 | |
109920188 | rainboy | E | March 13, 2021, 7:07 p.m. | OK | GNU C++17 (64) | TESTS | 87 | 2183 | 19148800 | 3300 | |
109920347 | rainboy | E | March 13, 2021, 7:10 p.m. | OK | GNU C++17 (64) | TESTS | 87 | 2199 | 19148800 | 3300 | |
109930770 | wlzhouzhuan | E | March 14, 2021, 2:11 a.m. | OK | GNU C++17 (64) | TESTS | 87 | 2324 | 44953600 | 3300 | |
109916666 | Ormlis | E | March 13, 2021, 6:01 p.m. | OK | GNU C++17 (64) | TESTS | 87 | 2448 | 84992000 | 3300 | |
109913021 | Egor.Lifar | E | March 13, 2021, 5:04 p.m. | OK | GNU C++17 (64) | TESTS | 87 | 2464 | 105881600 | 3300 | |
109914751 | Mangooste | E | March 13, 2021, 5:30 p.m. | OK | GNU C++17 (64) | TESTS | 87 | 2947 | 37683200 | 3300 |
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