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ContestId |
Name |
Phase |
Frozen |
Duration (Seconds) |
Relative Time |
Start Time |
|---|---|---|---|---|---|---|
| 2112 | Educational Codeforces Round 180 (Rated for Div. 2) | FINISHED | False | 7200 | 25716323 | June 23, 2025, 2:35 p.m. |
Solved |
Index |
Name |
Type |
Tags |
Community Tag |
Rating |
|---|---|---|---|---|---|---|
| ( 626 ) | F | Variables and Operations | PROGRAMMING | graphs greedy shortest paths |
There are (n) variables; let's denote the value of the (i)-th variable as (a_i). There are also (m) operations which will be applied to these variables; the (i)-th operation is described by three integers (x_i, y_i, z_i). When the (i)-th operation is applied, the variable (x_i) gets assigned the following value: (\min(a_{x_i}, a_{y_i} + z_i)). Every operation will be applied exactly once , but their order is not fixed; they can be applied in any order. Let's call a sequence of initial variable values (a_1, a_2, \dots, a_n) stable , if no matter in which order we apply operations, the resulting values will be the same. If the resulting value of the (i)-th variable depends on the order of operations, then the sequence of initial variable values is called (i)- unstable . You have to process (q) queries. In each query, you will be given initial values (a_1, a_2, \dots, a_n) and an integer (k); before applying the operations, you can at most (k) times choose a variable and decrease it by (1). For every variable (i), you have to independently determine if it is possible to transform the given values into an (i)-unstable sequence. The first line contains two integers (n) and (m) ((2 \le n \le 500); (1 \le m \le 4 \cdot 10^5)) — the number of variables and operations, respectively. Then, (m) lines follow. The (i)-th of them contains three integers (x_i, y_i, z_i) ((1 \le x_i, y_i \le n); (x_i \ne y_i); (0 \le z_i \le 10^5)) — the description of the (i)-th operation. The next line contains one integer (q) ((1 \le q \le 1000)) — the number of queries. Each query consists of two lines: the first line contains one integer (k) ((0 \le k \le 10^9)) — the maximum number of times you can choose a variable and decrease it by (1); the second line contains (n) integers (a_1, a_2, \dots, a_n) ((0 \le a_i \le 10^9)) — the initi |
| Educational Codeforces Round 180 — Editorial |
Submission Id |
Author(s) |
Index |
Submitted |
Verdict |
Language |
Test Set |
Tests Passed |
Time taken (ms) |
Memory Consumed (bytes) |
Tags |
Rating |
|---|---|---|---|---|---|---|---|---|---|---|---|
| 325952529 | ValeriyShiyan | F | June 25, 2025, 3:46 a.m. | OK | C# 10 | TESTS | 90 | 4718 | 16384000 | ||
| 325939556 | Kyte | F | June 24, 2025, 10:42 p.m. | OK | C++17 (GCC 7-32) | TESTS | 90 | 1155 | 2048000 | ||
| 325850939 | wwwaz | F | June 24, 2025, 1:22 a.m. | OK | C++17 (GCC 7-32) | TESTS | 90 | 1280 | 2150400 | ||
| 325950399 | Lightwhite | F | June 25, 2025, 3:14 a.m. | OK | C++17 (GCC 7-32) | TESTS | 90 | 1374 | 2048000 | ||
| 325903733 | Mahjong_Triple | F | June 24, 2025, 4:34 p.m. | OK | C++17 (GCC 7-32) | TESTS | 90 | 1812 | 2150400 | ||
| 325828736 | akulsareen | F | June 23, 2025, 6:02 p.m. | OK | C++17 (GCC 7-32) | TESTS | 90 | 1890 | 2150400 | ||
| 325951402 | sunchaoyi | F | June 25, 2025, 3:28 a.m. | OK | C++17 (GCC 7-32) | TESTS | 90 | 2156 | 102400 | ||
| 325894458 | chennie | F | June 24, 2025, 3:31 p.m. | OK | C++17 (GCC 7-32) | TESTS | 90 | 2609 | 102400 | ||
| 325854367 | CrispyLobster | F | June 24, 2025, 10:08 a.m. | OK | C++17 (GCC 7-32) | TESTS | 90 | 3015 | 2457600 | ||
| 325844826 | _odium | F | June 23, 2025, 9:51 p.m. | OK | C++17 (GCC 7-32) | TESTS | 90 | 3953 | 4198400 | ||
| 325919543 | Chaeryeong | F | June 24, 2025, 6:34 p.m. | OK | C++17 (GCC 7-32) | TESTS | 90 | 3984 | 102400 | ||
| 325925665 | weirdflexbutok | F | June 24, 2025, 7:43 p.m. | OK | C++20 (GCC 13-64) | TESTS | 90 | 890 | 102400 | ||
| 325835951 | NickMish | F | June 23, 2025, 7:09 p.m. | OK | C++20 (GCC 13-64) | TESTS | 90 | 952 | 102400 | ||
| 325943015 | dengyufan | F | June 25, 2025, 12:40 a.m. | OK | C++20 (GCC 13-64) | TESTS | 90 | 1109 | 2048000 | ||
| 325829124 | fanhuaxingyu | F | June 23, 2025, 6:05 p.m. | OK | C++20 (GCC 13-64) | TESTS | 90 | 1202 | 102400 | ||
| 325821210 | Kirkon | F | June 23, 2025, 5:08 p.m. | OK | C++20 (GCC 13-64) | TESTS | 90 | 1389 | 102400 | ||
| 325842096 | turkhuu622 | F | June 23, 2025, 8:51 p.m. | OK | C++20 (GCC 13-64) | TESTS | 90 | 1421 | 102400 | ||
| 325939072 | ahmetalp | F | June 24, 2025, 10:25 p.m. | OK | C++20 (GCC 13-64) | TESTS | 90 | 1437 | 102400 | ||
| 325837823 | retarddestroyer | F | June 23, 2025, 7:37 p.m. | OK | C++20 (GCC 13-64) | TESTS | 90 | 1499 | 8704000 | ||
| 325947643 | xcc_szy0905 | F | June 25, 2025, 2:33 a.m. | OK | C++20 (GCC 13-64) | TESTS | 90 | 1624 | 4198400 | ||
| 325841904 | turkhuu622 | F | June 23, 2025, 8:47 p.m. | OK | C++20 (GCC 13-64) | TESTS | 90 | 1718 | 1945600 | ||
| 325820942 | Joler_ | F | June 23, 2025, 5:06 p.m. | OK | C++23 (GCC 14-64, msys2) | TESTS | 90 | 905 | 102400 | ||
| 325960020 | jianjianj | F | June 25, 2025, 5:30 a.m. | OK | C++23 (GCC 14-64, msys2) | TESTS | 90 | 952 | 102400 | ||
| 325907395 | DanielChang | F | June 24, 2025, 5 p.m. | OK | C++23 (GCC 14-64, msys2) | TESTS | 90 | 1171 | 2048000 | ||
| 325835867 | Auchenai01 | F | June 23, 2025, 7:08 p.m. | OK | C++23 (GCC 14-64, msys2) | TESTS | 90 | 1202 | 102400 | ||
| 325826154 | Abilmansur-K-008-27 | F | June 23, 2025, 5:43 p.m. | OK | C++23 (GCC 14-64, msys2) | TESTS | 90 | 1265 | 5836800 | ||
| 325948297 | Dominater069 | F | June 25, 2025, 2:43 a.m. | OK | C++23 (GCC 14-64, msys2) | TESTS | 90 | 1311 | 819200 | ||
| 325851639 | phtniit | F | June 24, 2025, 9:18 a.m. | OK | C++23 (GCC 14-64, msys2) | TESTS | 90 | 1327 | 2150400 | ||
| 325824943 | tosivanmak | F | June 23, 2025, 5:33 p.m. | OK | C++23 (GCC 14-64, msys2) | TESTS | 90 | 1452 | 12595200 | ||
| 325865958 | PinkieRabbit | F | June 24, 2025, 11:44 a.m. | OK | C++23 (GCC 14-64, msys2) | TESTS | 90 | 1499 | 2150400 | ||
| 325919225 | waste_ | F | June 24, 2025, 6:31 p.m. | OK | C++23 (GCC 14-64, msys2) | TESTS | 90 | 1577 | 4198400 | ||
| 325901033 | DanielAnker | F | June 24, 2025, 4:16 p.m. | OK | Rust 2021 | TESTS | 90 | 4234 | 12492800 |
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