답안 #345064

#	제출 시각	아이디	문제	언어	결과	실행 시간	메모리
345064	2021-01-07T01:59:46 Z	Kevin_Zhang_TW	경주 (Race) (IOI11_race)	C++17	100 / 100	530 ms	83180 KB

race

#include "race.h"
#include <bits/stdc++.h>
using namespace std;
using ll = long long;
#define pb emplace_back
#define AI(i) begin(i), end(i)
template<class T> bool chmin(T &a, T b) { return b < a ? (a = b, true) : false; }
template<class T> bool chmax(T &a, T b) { return a < b ? (a = b, true) : false; }
#ifdef KEV
#define DE(args...) kout("[ " + string(#args) + " ] = ", args)
void kout() { cerr << endl; }
template<class T, class ...U> void kout(T a, U ...b) { cerr << a << ' ', kout(b...); }
template<class T> void debug(T L, T R) { while (L != R) cerr << *L << " \n"[next(L) == R], ++L; }
#else
#define DE(...) 0
#define debug(...) 0
#endif
const int MAX_N = 300010, inf = 1e9;

vector<pair<int,int>> edge[MAX_N];

map<ll,int> amp[MAX_N];

int k;

int dfs(int x, int lst = -1, ll len = 0) {
	static int dep;
	++dep;

	DE(x, dep, len);

	int res = inf;

	auto &cur = amp[x]; cur[len] = dep;

	for (auto [u, w] : edge[x]) if (u != lst) {
		chmin(res, dfs(u, x, len + w));
		auto &nxt = amp[u];

		if (cur.size() < nxt.size()) swap(cur, nxt);

		for (auto [L, D] : nxt) {
			if (cur.count(k + 2 * len - L))
				chmin(res, D + cur[k + 2 * len - L] - 2 * dep);
		}
		for (auto [L, D] : nxt)
			if (cur.count(L))
				chmin(cur[L], D);
			else cur[L] = D;
		nxt.clear();
	}
//	if (false) if (cur.count(k + len)) {
//		DE(dep, cur[k + len]);
//		chmin(res, cur[k + len] - dep);
//	}
	--dep;

	return res;
}

int best_path(int N, int K, int H[][2], int L[]) {
	static int cnt;
	assert(++cnt == 1);
	for (int i = 0;i+1 < N;++i) {
		int a = H[i][0], b = H[i][1], w = L[i];
		edge[a].pb(b, w);
		edge[b].pb(a, w);
	}
	k = K;
	int res = dfs(0);
	return res == inf ? -1 : res;
}

Compilation message

race.cpp: In function 'int dfs(int, int, ll)':
race.cpp:15:17: warning: statement has no effect [-Wunused-value]
   15 | #define DE(...) 0
      |                 ^
race.cpp:30:2: note: in expansion of macro 'DE'
   30 |  DE(x, dep, len);
      |  ^~

Subtask #1
9.0 / 9.0

#	결과	실행 시간	메모리	Grader output
1	Correct	17 ms	21484 KB	Output is correct
2	Correct	15 ms	21484 KB	Output is correct
3	Correct	16 ms	21484 KB	Output is correct
4	Correct	16 ms	21484 KB	Output is correct
5	Correct	15 ms	21484 KB	Output is correct
6	Correct	15 ms	21484 KB	Output is correct
7	Correct	15 ms	21484 KB	Output is correct
8	Correct	15 ms	21484 KB	Output is correct
9	Correct	15 ms	21484 KB	Output is correct
10	Correct	15 ms	21484 KB	Output is correct
11	Correct	15 ms	21484 KB	Output is correct
12	Correct	16 ms	21484 KB	Output is correct
13	Correct	15 ms	21484 KB	Output is correct
14	Correct	17 ms	21632 KB	Output is correct
15	Correct	15 ms	21484 KB	Output is correct
16	Correct	15 ms	21484 KB	Output is correct
17	Correct	15 ms	21484 KB	Output is correct
18	Correct	15 ms	21504 KB	Output is correct

Subtask #2
12.0 / 12.0

#	결과	실행 시간	메모리	Grader output
1	Correct	17 ms	21484 KB	Output is correct
2	Correct	15 ms	21484 KB	Output is correct
3	Correct	16 ms	21484 KB	Output is correct
4	Correct	16 ms	21484 KB	Output is correct
5	Correct	15 ms	21484 KB	Output is correct
6	Correct	15 ms	21484 KB	Output is correct
7	Correct	15 ms	21484 KB	Output is correct
8	Correct	15 ms	21484 KB	Output is correct
9	Correct	15 ms	21484 KB	Output is correct
10	Correct	15 ms	21484 KB	Output is correct
11	Correct	15 ms	21484 KB	Output is correct
12	Correct	16 ms	21484 KB	Output is correct
13	Correct	15 ms	21484 KB	Output is correct
14	Correct	17 ms	21632 KB	Output is correct
15	Correct	15 ms	21484 KB	Output is correct
16	Correct	15 ms	21484 KB	Output is correct
17	Correct	15 ms	21484 KB	Output is correct
18	Correct	15 ms	21504 KB	Output is correct
19	Correct	15 ms	21484 KB	Output is correct
20	Correct	14 ms	21612 KB	Output is correct
21	Correct	16 ms	21484 KB	Output is correct
22	Correct	16 ms	21632 KB	Output is correct
23	Correct	16 ms	21612 KB	Output is correct
24	Correct	16 ms	21612 KB	Output is correct
25	Correct	16 ms	21612 KB	Output is correct
26	Correct	16 ms	21612 KB	Output is correct
27	Correct	15 ms	21484 KB	Output is correct
28	Correct	18 ms	21612 KB	Output is correct
29	Correct	16 ms	21612 KB	Output is correct
30	Correct	20 ms	21612 KB	Output is correct
31	Correct	16 ms	21612 KB	Output is correct
32	Correct	16 ms	21612 KB	Output is correct
33	Correct	16 ms	21612 KB	Output is correct
34	Correct	16 ms	21612 KB	Output is correct
35	Correct	16 ms	21612 KB	Output is correct
36	Correct	15 ms	21612 KB	Output is correct
37	Correct	15 ms	21612 KB	Output is correct
38	Correct	16 ms	21612 KB	Output is correct

Subtask #3
22.0 / 22.0

#	결과	실행 시간	메모리	Grader output
1	Correct	17 ms	21484 KB	Output is correct
2	Correct	15 ms	21484 KB	Output is correct
3	Correct	16 ms	21484 KB	Output is correct
4	Correct	16 ms	21484 KB	Output is correct
5	Correct	15 ms	21484 KB	Output is correct
6	Correct	15 ms	21484 KB	Output is correct
7	Correct	15 ms	21484 KB	Output is correct
8	Correct	15 ms	21484 KB	Output is correct
9	Correct	15 ms	21484 KB	Output is correct
10	Correct	15 ms	21484 KB	Output is correct
11	Correct	15 ms	21484 KB	Output is correct
12	Correct	16 ms	21484 KB	Output is correct
13	Correct	15 ms	21484 KB	Output is correct
14	Correct	17 ms	21632 KB	Output is correct
15	Correct	15 ms	21484 KB	Output is correct
16	Correct	15 ms	21484 KB	Output is correct
17	Correct	15 ms	21484 KB	Output is correct
18	Correct	15 ms	21504 KB	Output is correct
19	Correct	129 ms	26348 KB	Output is correct
20	Correct	132 ms	27756 KB	Output is correct
21	Correct	132 ms	27884 KB	Output is correct
22	Correct	130 ms	27756 KB	Output is correct
23	Correct	162 ms	28396 KB	Output is correct
24	Correct	143 ms	28012 KB	Output is correct
25	Correct	131 ms	40684 KB	Output is correct
26	Correct	91 ms	52224 KB	Output is correct
27	Correct	227 ms	34668 KB	Output is correct
28	Correct	325 ms	83180 KB	Output is correct
29	Correct	324 ms	81388 KB	Output is correct
30	Correct	228 ms	34540 KB	Output is correct
31	Correct	227 ms	34540 KB	Output is correct
32	Correct	288 ms	35052 KB	Output is correct
33	Correct	253 ms	34212 KB	Output is correct
34	Correct	404 ms	47724 KB	Output is correct

Subtask #4
57.0 / 57.0

#	결과	실행 시간	메모리	Grader output
1	Correct	17 ms	21484 KB	Output is correct
2	Correct	15 ms	21484 KB	Output is correct
3	Correct	16 ms	21484 KB	Output is correct
4	Correct	16 ms	21484 KB	Output is correct
5	Correct	15 ms	21484 KB	Output is correct
6	Correct	15 ms	21484 KB	Output is correct
7	Correct	15 ms	21484 KB	Output is correct
8	Correct	15 ms	21484 KB	Output is correct
9	Correct	15 ms	21484 KB	Output is correct
10	Correct	15 ms	21484 KB	Output is correct
11	Correct	15 ms	21484 KB	Output is correct
12	Correct	16 ms	21484 KB	Output is correct
13	Correct	15 ms	21484 KB	Output is correct
14	Correct	17 ms	21632 KB	Output is correct
15	Correct	15 ms	21484 KB	Output is correct
16	Correct	15 ms	21484 KB	Output is correct
17	Correct	15 ms	21484 KB	Output is correct
18	Correct	15 ms	21504 KB	Output is correct
19	Correct	15 ms	21484 KB	Output is correct
20	Correct	14 ms	21612 KB	Output is correct
21	Correct	16 ms	21484 KB	Output is correct
22	Correct	16 ms	21632 KB	Output is correct
23	Correct	16 ms	21612 KB	Output is correct
24	Correct	16 ms	21612 KB	Output is correct
25	Correct	16 ms	21612 KB	Output is correct
26	Correct	16 ms	21612 KB	Output is correct
27	Correct	15 ms	21484 KB	Output is correct
28	Correct	18 ms	21612 KB	Output is correct
29	Correct	16 ms	21612 KB	Output is correct
30	Correct	20 ms	21612 KB	Output is correct
31	Correct	16 ms	21612 KB	Output is correct
32	Correct	16 ms	21612 KB	Output is correct
33	Correct	16 ms	21612 KB	Output is correct
34	Correct	16 ms	21612 KB	Output is correct
35	Correct	16 ms	21612 KB	Output is correct
36	Correct	15 ms	21612 KB	Output is correct
37	Correct	15 ms	21612 KB	Output is correct
38	Correct	16 ms	21612 KB	Output is correct
39	Correct	129 ms	26348 KB	Output is correct
40	Correct	132 ms	27756 KB	Output is correct
41	Correct	132 ms	27884 KB	Output is correct
42	Correct	130 ms	27756 KB	Output is correct
43	Correct	162 ms	28396 KB	Output is correct
44	Correct	143 ms	28012 KB	Output is correct
45	Correct	131 ms	40684 KB	Output is correct
46	Correct	91 ms	52224 KB	Output is correct
47	Correct	227 ms	34668 KB	Output is correct
48	Correct	325 ms	83180 KB	Output is correct
49	Correct	324 ms	81388 KB	Output is correct
50	Correct	228 ms	34540 KB	Output is correct
51	Correct	227 ms	34540 KB	Output is correct
52	Correct	288 ms	35052 KB	Output is correct
53	Correct	253 ms	34212 KB	Output is correct
54	Correct	404 ms	47724 KB	Output is correct
55	Correct	28 ms	22508 KB	Output is correct
56	Correct	21 ms	22124 KB	Output is correct
57	Correct	76 ms	27884 KB	Output is correct
58	Correct	65 ms	27616 KB	Output is correct
59	Correct	117 ms	52204 KB	Output is correct
60	Correct	317 ms	81688 KB	Output is correct
61	Correct	267 ms	36608 KB	Output is correct
62	Correct	223 ms	34796 KB	Output is correct
63	Correct	272 ms	34944 KB	Output is correct
64	Correct	530 ms	43372 KB	Output is correct
65	Correct	505 ms	47852 KB	Output is correct
66	Correct	349 ms	77292 KB	Output is correct
67	Correct	195 ms	35164 KB	Output is correct
68	Correct	397 ms	45804 KB	Output is correct
69	Correct	434 ms	50412 KB	Output is correct
70	Correct	431 ms	44920 KB	Output is correct

답안 #345064

Compilation message

Subtask #1 9.0 / 9.0

Subtask #2 12.0 / 12.0

Subtask #3 22.0 / 22.0

Subtask #4 57.0 / 57.0

Subtask #1
9.0 / 9.0

Subtask #2
12.0 / 12.0

Subtask #3
22.0 / 22.0

Subtask #4
57.0 / 57.0