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답안 #426013

# 제출 시각 아이디 문제 언어 결과 실행 시간 메모리
426013 2021-06-13T12:59:23 Z Mounir 경주 (Race) (IOI11_race) C++14
100 / 100
 665 ms 103724 KB 
#include "race.h"
#include <bits/stdc++.h>
#define pii pair<int, int>
#define chmin(x, v) x = min(x, v)
#define pb push_back
#define sz(x) (int)x.size()
using namespace std;

const int N_NOEUDS = 1e6;

struct SousArbre {
	map<int, int> profMin;
};

vector<SousArbre> arbre;
bool vu[N_NOEUDS];
int prof[N_NOEUDS], distRacine[N_NOEUDS];
vector<pii> voisins[N_NOEUDS];

int ans = N_NOEUDS, k;

int fusion(int pere, int fils, int noeud){
	if (sz(arbre[pere].profMin) < sz(arbre[fils].profMin))
		return fusion(fils, pere, noeud);

	for (pii couple : arbre[fils].profMin){
		int cible = k + 2 * distRacine[noeud] - couple.first;
		if (arbre[pere].profMin.count(cible) == 1)
			chmin(ans, couple.second + arbre[pere].profMin[cible] - 2 * prof[noeud]);
	}

	for (pii couple : arbre[fils].profMin){
		if (arbre[pere].profMin.count(couple.first) == 1)
			chmin(arbre[pere].profMin[couple.first], couple.second);
		else
			arbre[pere].profMin[couple.first] = couple.second;
	}

	return pere;
}

int parcours(int noeud, int etage, int dRoot){
	vu[noeud] = true;
	prof[noeud] = etage;
	distRacine[noeud] = dRoot;

	int ind = sz(arbre);
	map<int, int> p; p[distRacine[noeud]] = prof[noeud];
	arbre.pb({p});

	for (pii sortant : voisins[noeud]){
		int enfant = sortant.first, distSup = sortant.second;
		if (vu[enfant]) continue;
		ind = fusion(ind, parcours(enfant, etage + 1, dRoot + distSup), noeud);
	}

	return ind;
}

int best_path(int N, int K, int H[][2], int L[]){
	k = K;
	for (int ind = 0; ind < N - 1; ++ind){
		int poids = L[ind], noeud = H[ind][0], voisin = H[ind][1];
		voisins[noeud].pb({voisin, poids});
		voisins[voisin].pb({noeud, poids});
	}

	int racine = parcours(0, 0, 0);
	/*for (pii couple : arbre[racine].profMin)
		cout << "paire " << couple.first << " " << couple.second << endl;*/
	if (ans == N_NOEUDS) ans = -1;
	return ans;
}

Compilation message

race.cpp: In function 'int best_path(int, int, int (*)[2], int*)':
race.cpp:68:6: warning: unused variable 'racine' [-Wunused-variable]
   68 |  int racine = parcours(0, 0, 0);
      |      ^~~~~~

Subtask #1
9.0 / 9.0

# 결과 실행 시간 메모리 Grader output
1 Correct 15 ms 23804 KB Output is correct
2 Correct 17 ms 23804 KB Output is correct
3 Correct 14 ms 23780 KB Output is correct
4 Correct 15 ms 23756 KB Output is correct
5 Correct 18 ms 23772 KB Output is correct
6 Correct 15 ms 23768 KB Output is correct
7 Correct 14 ms 23816 KB Output is correct
8 Correct 15 ms 23812 KB Output is correct
9 Correct 15 ms 23804 KB Output is correct
10 Correct 15 ms 23740 KB Output is correct
11 Correct 14 ms 23796 KB Output is correct
12 Correct 14 ms 23756 KB Output is correct
13 Correct 15 ms 23756 KB Output is correct
14 Correct 15 ms 23804 KB Output is correct
15 Correct 18 ms 23788 KB Output is correct
16 Correct 17 ms 23708 KB Output is correct
17 Correct 16 ms 23836 KB Output is correct
18 Correct 15 ms 23776 KB Output is correct

Subtask #2
12.0 / 12.0

# 결과 실행 시간 메모리 Grader output
1 Correct 15 ms 23804 KB Output is correct
2 Correct 17 ms 23804 KB Output is correct
3 Correct 14 ms 23780 KB Output is correct
4 Correct 15 ms 23756 KB Output is correct
5 Correct 18 ms 23772 KB Output is correct
6 Correct 15 ms 23768 KB Output is correct
7 Correct 14 ms 23816 KB Output is correct
8 Correct 15 ms 23812 KB Output is correct
9 Correct 15 ms 23804 KB Output is correct
10 Correct 15 ms 23740 KB Output is correct
11 Correct 14 ms 23796 KB Output is correct
12 Correct 14 ms 23756 KB Output is correct
13 Correct 15 ms 23756 KB Output is correct
14 Correct 15 ms 23804 KB Output is correct
15 Correct 18 ms 23788 KB Output is correct
16 Correct 17 ms 23708 KB Output is correct
17 Correct 16 ms 23836 KB Output is correct
18 Correct 15 ms 23776 KB Output is correct
19 Correct 14 ms 23752 KB Output is correct
20 Correct 14 ms 23824 KB Output is correct
21 Correct 16 ms 24012 KB Output is correct
22 Correct 16 ms 24004 KB Output is correct
23 Correct 19 ms 24012 KB Output is correct
24 Correct 16 ms 24004 KB Output is correct
25 Correct 20 ms 24040 KB Output is correct
26 Correct 14 ms 24012 KB Output is correct
27 Correct 14 ms 24012 KB Output is correct
28 Correct 15 ms 24012 KB Output is correct
29 Correct 16 ms 24012 KB Output is correct
30 Correct 33 ms 24060 KB Output is correct
31 Correct 17 ms 24056 KB Output is correct
32 Correct 20 ms 24068 KB Output is correct
33 Correct 16 ms 24092 KB Output is correct
34 Correct 15 ms 24012 KB Output is correct
35 Correct 17 ms 24040 KB Output is correct
36 Correct 16 ms 24096 KB Output is correct
37 Correct 16 ms 24012 KB Output is correct
38 Correct 19 ms 24084 KB Output is correct

Subtask #3
22.0 / 22.0

# 결과 실행 시간 메모리 Grader output
1 Correct 15 ms 23804 KB Output is correct
2 Correct 17 ms 23804 KB Output is correct
3 Correct 14 ms 23780 KB Output is correct
4 Correct 15 ms 23756 KB Output is correct
5 Correct 18 ms 23772 KB Output is correct
6 Correct 15 ms 23768 KB Output is correct
7 Correct 14 ms 23816 KB Output is correct
8 Correct 15 ms 23812 KB Output is correct
9 Correct 15 ms 23804 KB Output is correct
10 Correct 15 ms 23740 KB Output is correct
11 Correct 14 ms 23796 KB Output is correct
12 Correct 14 ms 23756 KB Output is correct
13 Correct 15 ms 23756 KB Output is correct
14 Correct 15 ms 23804 KB Output is correct
15 Correct 18 ms 23788 KB Output is correct
16 Correct 17 ms 23708 KB Output is correct
17 Correct 16 ms 23836 KB Output is correct
18 Correct 15 ms 23776 KB Output is correct
19 Correct 160 ms 47204 KB Output is correct
20 Correct 177 ms 47384 KB Output is correct
21 Correct 169 ms 47124 KB Output is correct
22 Correct 190 ms 46824 KB Output is correct
23 Correct 192 ms 56388 KB Output is correct
24 Correct 178 ms 49508 KB Output is correct
25 Correct 161 ms 52256 KB Output is correct
26 Correct 103 ms 63104 KB Output is correct
27 Correct 257 ms 61968 KB Output is correct
28 Correct 384 ms 102860 KB Output is correct
29 Correct 372 ms 100808 KB Output is correct
30 Correct 321 ms 61972 KB Output is correct
31 Correct 306 ms 61984 KB Output is correct
32 Correct 362 ms 62188 KB Output is correct
33 Correct 368 ms 65564 KB Output is correct
34 Correct 483 ms 90412 KB Output is correct

Subtask #4
57.0 / 57.0

# 결과 실행 시간 메모리 Grader output
1 Correct 15 ms 23804 KB Output is correct
2 Correct 17 ms 23804 KB Output is correct
3 Correct 14 ms 23780 KB Output is correct
4 Correct 15 ms 23756 KB Output is correct
5 Correct 18 ms 23772 KB Output is correct
6 Correct 15 ms 23768 KB Output is correct
7 Correct 14 ms 23816 KB Output is correct
8 Correct 15 ms 23812 KB Output is correct
9 Correct 15 ms 23804 KB Output is correct
10 Correct 15 ms 23740 KB Output is correct
11 Correct 14 ms 23796 KB Output is correct
12 Correct 14 ms 23756 KB Output is correct
13 Correct 15 ms 23756 KB Output is correct
14 Correct 15 ms 23804 KB Output is correct
15 Correct 18 ms 23788 KB Output is correct
16 Correct 17 ms 23708 KB Output is correct
17 Correct 16 ms 23836 KB Output is correct
18 Correct 15 ms 23776 KB Output is correct
19 Correct 14 ms 23752 KB Output is correct
20 Correct 14 ms 23824 KB Output is correct
21 Correct 16 ms 24012 KB Output is correct
22 Correct 16 ms 24004 KB Output is correct
23 Correct 19 ms 24012 KB Output is correct
24 Correct 16 ms 24004 KB Output is correct
25 Correct 20 ms 24040 KB Output is correct
26 Correct 14 ms 24012 KB Output is correct
27 Correct 14 ms 24012 KB Output is correct
28 Correct 15 ms 24012 KB Output is correct
29 Correct 16 ms 24012 KB Output is correct
30 Correct 33 ms 24060 KB Output is correct
31 Correct 17 ms 24056 KB Output is correct
32 Correct 20 ms 24068 KB Output is correct
33 Correct 16 ms 24092 KB Output is correct
34 Correct 15 ms 24012 KB Output is correct
35 Correct 17 ms 24040 KB Output is correct
36 Correct 16 ms 24096 KB Output is correct
37 Correct 16 ms 24012 KB Output is correct
38 Correct 19 ms 24084 KB Output is correct
39 Correct 160 ms 47204 KB Output is correct
40 Correct 177 ms 47384 KB Output is correct
41 Correct 169 ms 47124 KB Output is correct
42 Correct 190 ms 46824 KB Output is correct
43 Correct 192 ms 56388 KB Output is correct
44 Correct 178 ms 49508 KB Output is correct
45 Correct 161 ms 52256 KB Output is correct
46 Correct 103 ms 63104 KB Output is correct
47 Correct 257 ms 61968 KB Output is correct
48 Correct 384 ms 102860 KB Output is correct
49 Correct 372 ms 100808 KB Output is correct
50 Correct 321 ms 61972 KB Output is correct
51 Correct 306 ms 61984 KB Output is correct
52 Correct 362 ms 62188 KB Output is correct
53 Correct 368 ms 65564 KB Output is correct
54 Correct 483 ms 90412 KB Output is correct
55 Correct 37 ms 26804 KB Output is correct
56 Correct 29 ms 26008 KB Output is correct
57 Correct 123 ms 45288 KB Output is correct
58 Correct 87 ms 40224 KB Output is correct
59 Correct 181 ms 63140 KB Output is correct
60 Correct 378 ms 101380 KB Output is correct
61 Correct 407 ms 64632 KB Output is correct
62 Correct 317 ms 62084 KB Output is correct
63 Correct 321 ms 62176 KB Output is correct
64 Correct 665 ms 103724 KB Output is correct
65 Correct 553 ms 102288 KB Output is correct
66 Correct 452 ms 96264 KB Output is correct
67 Correct 283 ms 58100 KB Output is correct
68 Correct 508 ms 74856 KB Output is correct
69 Correct 555 ms 78832 KB Output is correct
70 Correct 491 ms 72788 KB Output is correct