답안 #658636

#	제출 시각	아이디	문제	언어	결과	실행 시간	메모리
658636	2022-11-13T22:56:13 Z	lunchbox1	Dynamic Diameter (CEOI19_diameter)	C++17	100 / 100	463 ms	46988 KB

diameter

/*
 Dynamic Diameter
 https://oj.uz/problem/view/CEOI19_diameter
*/
#include <bits/stdc++.h>
using namespace std;

const int N = 1e5, N_ = N * 2 - 1;

struct dat {
 long long a, b, ab, bc, abc;

 void lazy(long long x) {
  a += x;
  b -= 2 * x;
  ab -= x;
  bc -= x;
 }
 dat operator+(const dat& o) const {
  return {
   max(a, o.a),
   max(b, o.b),
   max(a + o.b, max(ab, o.ab)),
   max(b + o.a, max(bc, o.bc)),
   max(max(a + o.bc, ab + o.a), max(abc, o.abc))
  };
 }
} t[N_ * 4];

long long lz[N_ * 4];

vector<pair<int, long long>> g[N];
int d[N], in[N], out[N], tt;

void dfs(int p, int i) {
 in[i] = tt++;
 for (auto [j, c] : g[i])
  if (p != j)
   d[j] = d[i] + 1, dfs(i, j), tt++;
 out[i] = tt - 1;
}

void put(int k, long long x) {
 t[k].lazy(x);
 lz[k] += x;
}

void push(int k) {
 if (lz[k] != 0)
  put(k << 1 | 0, lz[k]), put(k << 1 | 1, lz[k]), lz[k] = 0;
}

void update(int k, int l, int r, int ql, int qr, long long x) {
 if (ql > r || qr < l)
  return;
 else if (ql <= l && qr >= r)
  put(k, x);
 else {
  int m = (l + r) / 2;
  push(k);
  update(k << 1 | 0, l, m, ql, qr, x), update(k << 1 | 1, m + 1, r, ql, qr, x);
  t[k] = t[k << 1 | 0] + t[k << 1 | 1];
 }
}

int main() {
 ios::sync_with_stdio(0), cin.tie(0);
 int n, q;
 long long A;
 cin >> n >> q >> A;
 static tuple<int, int, long long> e[N - 1];
 for (int h = 0; h < n - 1; h++) {
  int i, j;
  long long c;
  cin >> i >> j >> c, i--, j--;
  g[i].push_back({j, c}), g[j].push_back({i, c});
  e[h] = {i, j, c};
 }
 tt = 0;
 dfs(-1, 0);
 assert(tt <= N_);
 for (int h = 0; h < n - 1; h++) {
  auto &[i, j, c] = e[h];
  if (d[i] < d[j])
   swap(i, j);
  update(1, 0, tt - 1, in[i], out[i], c);
 }
 long long last = 0;
 while (q--) {
  int h;
  long long c;
  cin >> h >> c, h = (h + last) % (n - 1), c = (c + last) % A;
  auto &[i, j, c_] = e[h];
  update(1, 0, tt - 1, in[i], out[i], c - c_), c_ = c;
  cout << (last = t[1].abc) << '\n';
 }
 return 0;
}

Subtask #1
11.0 / 11.0

#	결과	실행 시간	메모리	Grader output
1	Correct	2 ms	2644 KB	Output is correct
2	Correct	2 ms	2644 KB	Output is correct
3	Correct	2 ms	2684 KB	Output is correct
4	Correct	1 ms	2684 KB	Output is correct
5	Correct	2 ms	2644 KB	Output is correct
6	Correct	2 ms	2644 KB	Output is correct
7	Correct	2 ms	2692 KB	Output is correct
8	Correct	2 ms	2644 KB	Output is correct
9	Correct	2 ms	2688 KB	Output is correct
10	Correct	2 ms	2644 KB	Output is correct
11	Correct	2 ms	2688 KB	Output is correct
12	Correct	2 ms	2644 KB	Output is correct
13	Correct	2 ms	2692 KB	Output is correct
14	Correct	2 ms	2684 KB	Output is correct
15	Correct	1 ms	2644 KB	Output is correct
16	Correct	2 ms	2688 KB	Output is correct
17	Correct	2 ms	2644 KB	Output is correct
18	Correct	2 ms	2644 KB	Output is correct

Subtask #2
13.0 / 13.0

#	결과	실행 시간	메모리	Grader output
1	Correct	2 ms	2644 KB	Output is correct
2	Correct	2 ms	2644 KB	Output is correct
3	Correct	2 ms	2684 KB	Output is correct
4	Correct	1 ms	2684 KB	Output is correct
5	Correct	2 ms	2644 KB	Output is correct
6	Correct	2 ms	2644 KB	Output is correct
7	Correct	2 ms	2692 KB	Output is correct
8	Correct	2 ms	2644 KB	Output is correct
9	Correct	2 ms	2688 KB	Output is correct
10	Correct	2 ms	2644 KB	Output is correct
11	Correct	2 ms	2688 KB	Output is correct
12	Correct	2 ms	2644 KB	Output is correct
13	Correct	2 ms	2692 KB	Output is correct
14	Correct	2 ms	2684 KB	Output is correct
15	Correct	1 ms	2644 KB	Output is correct
16	Correct	2 ms	2688 KB	Output is correct
17	Correct	2 ms	2644 KB	Output is correct
18	Correct	2 ms	2644 KB	Output is correct
19	Correct	6 ms	3028 KB	Output is correct
20	Correct	5 ms	2960 KB	Output is correct
21	Correct	6 ms	3076 KB	Output is correct
22	Correct	6 ms	3028 KB	Output is correct
23	Correct	14 ms	4876 KB	Output is correct
24	Correct	12 ms	4692 KB	Output is correct
25	Correct	12 ms	4820 KB	Output is correct
26	Correct	11 ms	5076 KB	Output is correct

Subtask #3
7.0 / 7.0

#	결과	실행 시간	메모리	Grader output
1	Correct	2 ms	2644 KB	Output is correct
2	Correct	2 ms	2688 KB	Output is correct
3	Correct	2 ms	2696 KB	Output is correct
4	Correct	8 ms	2824 KB	Output is correct
5	Correct	33 ms	3796 KB	Output is correct
6	Correct	1 ms	2644 KB	Output is correct
7	Correct	2 ms	2772 KB	Output is correct
8	Correct	2 ms	2772 KB	Output is correct
9	Correct	4 ms	2772 KB	Output is correct
10	Correct	11 ms	3028 KB	Output is correct
11	Correct	56 ms	4248 KB	Output is correct
12	Correct	6 ms	4640 KB	Output is correct
13	Correct	6 ms	4564 KB	Output is correct
14	Correct	6 ms	4620 KB	Output is correct
15	Correct	15 ms	4872 KB	Output is correct
16	Correct	60 ms	6052 KB	Output is correct
17	Correct	67 ms	34920 KB	Output is correct
18	Correct	81 ms	34884 KB	Output is correct
19	Correct	85 ms	34924 KB	Output is correct
20	Correct	84 ms	35256 KB	Output is correct
21	Correct	179 ms	36580 KB	Output is correct

Subtask #4
18.0 / 18.0

#	결과	실행 시간	메모리	Grader output
1	Correct	3 ms	2900 KB	Output is correct
2	Correct	9 ms	3136 KB	Output is correct
3	Correct	35 ms	3588 KB	Output is correct
4	Correct	69 ms	4252 KB	Output is correct
5	Correct	12 ms	6700 KB	Output is correct
6	Correct	18 ms	6856 KB	Output is correct
7	Correct	55 ms	7452 KB	Output is correct
8	Correct	102 ms	8216 KB	Output is correct
9	Correct	42 ms	19900 KB	Output is correct
10	Correct	53 ms	19992 KB	Output is correct
11	Correct	105 ms	20716 KB	Output is correct
12	Correct	159 ms	21524 KB	Output is correct
13	Correct	83 ms	37068 KB	Output is correct
14	Correct	95 ms	37284 KB	Output is correct
15	Correct	184 ms	37912 KB	Output is correct
16	Correct	217 ms	38724 KB	Output is correct
17	Correct	181 ms	38496 KB	Output is correct

Subtask #5
24.0 / 24.0

#	결과	실행 시간	메모리	Grader output
1	Correct	350 ms	40864 KB	Output is correct
2	Correct	273 ms	40608 KB	Output is correct
3	Correct	293 ms	40664 KB	Output is correct
4	Correct	330 ms	40548 KB	Output is correct
5	Correct	300 ms	40444 KB	Output is correct
6	Correct	236 ms	39780 KB	Output is correct
7	Correct	384 ms	43216 KB	Output is correct
8	Correct	392 ms	43124 KB	Output is correct
9	Correct	309 ms	43092 KB	Output is correct
10	Correct	311 ms	43032 KB	Output is correct
11	Correct	306 ms	42840 KB	Output is correct
12	Correct	276 ms	41648 KB	Output is correct
13	Correct	362 ms	46832 KB	Output is correct
14	Correct	376 ms	46860 KB	Output is correct
15	Correct	414 ms	46872 KB	Output is correct
16	Correct	358 ms	46796 KB	Output is correct
17	Correct	364 ms	46088 KB	Output is correct
18	Correct	295 ms	42884 KB	Output is correct
19	Correct	359 ms	46988 KB	Output is correct
20	Correct	374 ms	46848 KB	Output is correct
21	Correct	373 ms	46820 KB	Output is correct
22	Correct	355 ms	46824 KB	Output is correct
23	Correct	337 ms	46032 KB	Output is correct
24	Correct	290 ms	42868 KB	Output is correct

Subtask #6
27.0 / 27.0

#	결과	실행 시간	메모리	Grader output
1	Correct	2 ms	2644 KB	Output is correct
2	Correct	2 ms	2644 KB	Output is correct
3	Correct	2 ms	2684 KB	Output is correct
4	Correct	1 ms	2684 KB	Output is correct
5	Correct	2 ms	2644 KB	Output is correct
6	Correct	2 ms	2644 KB	Output is correct
7	Correct	2 ms	2692 KB	Output is correct
8	Correct	2 ms	2644 KB	Output is correct
9	Correct	2 ms	2688 KB	Output is correct
10	Correct	2 ms	2644 KB	Output is correct
11	Correct	2 ms	2688 KB	Output is correct
12	Correct	2 ms	2644 KB	Output is correct
13	Correct	2 ms	2692 KB	Output is correct
14	Correct	2 ms	2684 KB	Output is correct
15	Correct	1 ms	2644 KB	Output is correct
16	Correct	2 ms	2688 KB	Output is correct
17	Correct	2 ms	2644 KB	Output is correct
18	Correct	2 ms	2644 KB	Output is correct
19	Correct	6 ms	3028 KB	Output is correct
20	Correct	5 ms	2960 KB	Output is correct
21	Correct	6 ms	3076 KB	Output is correct
22	Correct	6 ms	3028 KB	Output is correct
23	Correct	14 ms	4876 KB	Output is correct
24	Correct	12 ms	4692 KB	Output is correct
25	Correct	12 ms	4820 KB	Output is correct
26	Correct	11 ms	5076 KB	Output is correct
27	Correct	2 ms	2644 KB	Output is correct
28	Correct	2 ms	2688 KB	Output is correct
29	Correct	2 ms	2696 KB	Output is correct
30	Correct	8 ms	2824 KB	Output is correct
31	Correct	33 ms	3796 KB	Output is correct
32	Correct	1 ms	2644 KB	Output is correct
33	Correct	2 ms	2772 KB	Output is correct
34	Correct	2 ms	2772 KB	Output is correct
35	Correct	4 ms	2772 KB	Output is correct
36	Correct	11 ms	3028 KB	Output is correct
37	Correct	56 ms	4248 KB	Output is correct
38	Correct	6 ms	4640 KB	Output is correct
39	Correct	6 ms	4564 KB	Output is correct
40	Correct	6 ms	4620 KB	Output is correct
41	Correct	15 ms	4872 KB	Output is correct
42	Correct	60 ms	6052 KB	Output is correct
43	Correct	67 ms	34920 KB	Output is correct
44	Correct	81 ms	34884 KB	Output is correct
45	Correct	85 ms	34924 KB	Output is correct
46	Correct	84 ms	35256 KB	Output is correct
47	Correct	179 ms	36580 KB	Output is correct
48	Correct	3 ms	2900 KB	Output is correct
49	Correct	9 ms	3136 KB	Output is correct
50	Correct	35 ms	3588 KB	Output is correct
51	Correct	69 ms	4252 KB	Output is correct
52	Correct	12 ms	6700 KB	Output is correct
53	Correct	18 ms	6856 KB	Output is correct
54	Correct	55 ms	7452 KB	Output is correct
55	Correct	102 ms	8216 KB	Output is correct
56	Correct	42 ms	19900 KB	Output is correct
57	Correct	53 ms	19992 KB	Output is correct
58	Correct	105 ms	20716 KB	Output is correct
59	Correct	159 ms	21524 KB	Output is correct
60	Correct	83 ms	37068 KB	Output is correct
61	Correct	95 ms	37284 KB	Output is correct
62	Correct	184 ms	37912 KB	Output is correct
63	Correct	217 ms	38724 KB	Output is correct
64	Correct	181 ms	38496 KB	Output is correct
65	Correct	350 ms	40864 KB	Output is correct
66	Correct	273 ms	40608 KB	Output is correct
67	Correct	293 ms	40664 KB	Output is correct
68	Correct	330 ms	40548 KB	Output is correct
69	Correct	300 ms	40444 KB	Output is correct
70	Correct	236 ms	39780 KB	Output is correct
71	Correct	384 ms	43216 KB	Output is correct
72	Correct	392 ms	43124 KB	Output is correct
73	Correct	309 ms	43092 KB	Output is correct
74	Correct	311 ms	43032 KB	Output is correct
75	Correct	306 ms	42840 KB	Output is correct
76	Correct	276 ms	41648 KB	Output is correct
77	Correct	362 ms	46832 KB	Output is correct
78	Correct	376 ms	46860 KB	Output is correct
79	Correct	414 ms	46872 KB	Output is correct
80	Correct	358 ms	46796 KB	Output is correct
81	Correct	364 ms	46088 KB	Output is correct
82	Correct	295 ms	42884 KB	Output is correct
83	Correct	359 ms	46988 KB	Output is correct
84	Correct	374 ms	46848 KB	Output is correct
85	Correct	373 ms	46820 KB	Output is correct
86	Correct	355 ms	46824 KB	Output is correct
87	Correct	337 ms	46032 KB	Output is correct
88	Correct	290 ms	42868 KB	Output is correct
89	Correct	318 ms	39880 KB	Output is correct
90	Correct	304 ms	40240 KB	Output is correct
91	Correct	285 ms	41540 KB	Output is correct
92	Correct	324 ms	41596 KB	Output is correct
93	Correct	323 ms	43888 KB	Output is correct
94	Correct	373 ms	42992 KB	Output is correct
95	Correct	381 ms	44492 KB	Output is correct
96	Correct	346 ms	43492 KB	Output is correct
97	Correct	388 ms	44476 KB	Output is correct
98	Correct	463 ms	46284 KB	Output is correct
99	Correct	332 ms	44236 KB	Output is correct
100	Correct	354 ms	44184 KB	Output is correct

답안 #658636

Compilation message

Subtask #1 11.0 / 11.0

Subtask #2 13.0 / 13.0

Subtask #3 7.0 / 7.0

Subtask #4 18.0 / 18.0

Subtask #5 24.0 / 24.0

Subtask #6 27.0 / 27.0

Subtask #1
11.0 / 11.0

Subtask #2
13.0 / 13.0

Subtask #3
7.0 / 7.0

Subtask #4
18.0 / 18.0

Subtask #5
24.0 / 24.0

Subtask #6
27.0 / 27.0