oj.uz

답안 #839071

# 제출 시각 아이디 문제 언어 결과 실행 시간 메모리
839071 2023-08-28T14:59:57 Z cpptowin 경주 (Race) (IOI11_race) C++14
100 / 100
 407 ms 102296 KB 
#include "race.h"
#include <bits/stdc++.h>
#define X first
#define Y second
 
using namespace std;
typedef long long llint;
 
const int maxn = 2e5+10;
const int maxk = 1e6+10;
const int inf = 0x3f3f3f3f;
 
int n, k;
vector< pair<int, int> > graph[maxn];
map< llint, llint > s[maxn];
llint sol = inf;
llint ofx[maxn], ofy[maxn];
 
void solve(int x, int parr) {
	//printf("solving: %d %d\n", x, parr);
	s[x][0] = 0;
	for (auto iter : graph[x]) {
		int tren = iter.X;
		int cost = iter.Y;
		if (tren == parr) continue;
		solve(tren, x);
		
		//printf("merging %d %d\n", x, tren);
		ofx[tren] += cost;
		ofy[tren]++;
		if (s[tren].size() > s[x].size()) {
			//printf("child is larger\n");
			swap(s[tren], s[x]);
			swap(ofx[tren], ofx[x]);
			swap(ofy[tren], ofy[x]);
		}
		
		for (auto iter : s[tren]) {
			llint dis = iter.X + ofx[tren];
			//printf("trying %lld\n", dis);
			if (s[x].count(k - dis - ofx[x])) 
				sol = min(sol, s[x][k - dis - ofx[x]] + iter.Y + ofy[tren] + ofy[x]);
			
		}
		
		for (auto iter : s[tren]) {
			llint dis = iter.X + ofx[tren] - ofx[x];
			if (s[x].count(dis)) s[x][dis] = min(s[x][dis], iter.Y + ofy[tren] - ofy[x]);
			else s[x][dis] = iter.Y + ofy[tren] - ofy[x];
		} 
	}
}
 
int best_path(int N, int K, int H[][2], int L[])
{
	n = N, k = K;
	for (int i = 0; i < n - 1; i++) {
		int a = H[i][0];
		int b = H[i][1];
		graph[a].push_back({b, L[i]});
		graph[b].push_back({a, L[i]});
	}
	solve(0, -1);
	if (sol == inf) return -1;
	return sol;
}

Subtask #1
9.0 / 9.0

# 결과 실행 시간 메모리 Grader output
1 Correct 7 ms 14420 KB Output is correct
2 Correct 8 ms 14444 KB Output is correct
3 Correct 7 ms 14412 KB Output is correct
4 Correct 7 ms 14420 KB Output is correct
5 Correct 7 ms 14420 KB Output is correct
6 Correct 7 ms 14420 KB Output is correct
7 Correct 7 ms 14348 KB Output is correct
8 Correct 9 ms 14460 KB Output is correct
9 Correct 11 ms 14424 KB Output is correct
10 Correct 7 ms 14420 KB Output is correct
11 Correct 8 ms 14436 KB Output is correct
12 Correct 7 ms 14392 KB Output is correct
13 Correct 7 ms 14456 KB Output is correct
14 Correct 7 ms 14436 KB Output is correct
15 Correct 7 ms 14396 KB Output is correct
16 Correct 7 ms 14420 KB Output is correct
17 Correct 7 ms 14420 KB Output is correct
18 Correct 7 ms 14420 KB Output is correct

Subtask #2
12.0 / 12.0

# 결과 실행 시간 메모리 Grader output
1 Correct 7 ms 14420 KB Output is correct
2 Correct 8 ms 14444 KB Output is correct
3 Correct 7 ms 14412 KB Output is correct
4 Correct 7 ms 14420 KB Output is correct
5 Correct 7 ms 14420 KB Output is correct
6 Correct 7 ms 14420 KB Output is correct
7 Correct 7 ms 14348 KB Output is correct
8 Correct 9 ms 14460 KB Output is correct
9 Correct 11 ms 14424 KB Output is correct
10 Correct 7 ms 14420 KB Output is correct
11 Correct 8 ms 14436 KB Output is correct
12 Correct 7 ms 14392 KB Output is correct
13 Correct 7 ms 14456 KB Output is correct
14 Correct 7 ms 14436 KB Output is correct
15 Correct 7 ms 14396 KB Output is correct
16 Correct 7 ms 14420 KB Output is correct
17 Correct 7 ms 14420 KB Output is correct
18 Correct 7 ms 14420 KB Output is correct
19 Correct 7 ms 14400 KB Output is correct
20 Correct 7 ms 14420 KB Output is correct
21 Correct 8 ms 14664 KB Output is correct
22 Correct 8 ms 14768 KB Output is correct
23 Correct 8 ms 14664 KB Output is correct
24 Correct 7 ms 14676 KB Output is correct
25 Correct 11 ms 14708 KB Output is correct
26 Correct 9 ms 14660 KB Output is correct
27 Correct 8 ms 14500 KB Output is correct
28 Correct 8 ms 14684 KB Output is correct
29 Correct 9 ms 14672 KB Output is correct
30 Correct 9 ms 14668 KB Output is correct
31 Correct 10 ms 14628 KB Output is correct
32 Correct 9 ms 14648 KB Output is correct
33 Correct 8 ms 14676 KB Output is correct
34 Correct 7 ms 14664 KB Output is correct
35 Correct 8 ms 14676 KB Output is correct
36 Correct 7 ms 14660 KB Output is correct
37 Correct 8 ms 14572 KB Output is correct
38 Correct 8 ms 14656 KB Output is correct

Subtask #3
22.0 / 22.0

# 결과 실행 시간 메모리 Grader output
1 Correct 7 ms 14420 KB Output is correct
2 Correct 8 ms 14444 KB Output is correct
3 Correct 7 ms 14412 KB Output is correct
4 Correct 7 ms 14420 KB Output is correct
5 Correct 7 ms 14420 KB Output is correct
6 Correct 7 ms 14420 KB Output is correct
7 Correct 7 ms 14348 KB Output is correct
8 Correct 9 ms 14460 KB Output is correct
9 Correct 11 ms 14424 KB Output is correct
10 Correct 7 ms 14420 KB Output is correct
11 Correct 8 ms 14436 KB Output is correct
12 Correct 7 ms 14392 KB Output is correct
13 Correct 7 ms 14456 KB Output is correct
14 Correct 7 ms 14436 KB Output is correct
15 Correct 7 ms 14396 KB Output is correct
16 Correct 7 ms 14420 KB Output is correct
17 Correct 7 ms 14420 KB Output is correct
18 Correct 7 ms 14420 KB Output is correct
19 Correct 107 ms 37416 KB Output is correct
20 Correct 105 ms 37444 KB Output is correct
21 Correct 110 ms 37076 KB Output is correct
22 Correct 110 ms 36668 KB Output is correct
23 Correct 148 ms 49444 KB Output is correct
24 Correct 124 ms 40124 KB Output is correct
25 Correct 98 ms 36804 KB Output is correct
26 Correct 51 ms 43440 KB Output is correct
27 Correct 159 ms 49400 KB Output is correct
28 Correct 253 ms 83388 KB Output is correct
29 Correct 239 ms 81940 KB Output is correct
30 Correct 170 ms 47524 KB Output is correct
31 Correct 180 ms 47632 KB Output is correct
32 Correct 234 ms 47608 KB Output is correct
33 Correct 217 ms 52424 KB Output is correct
34 Correct 308 ms 84412 KB Output is correct

Subtask #4
57.0 / 57.0

# 결과 실행 시간 메모리 Grader output
1 Correct 7 ms 14420 KB Output is correct
2 Correct 8 ms 14444 KB Output is correct
3 Correct 7 ms 14412 KB Output is correct
4 Correct 7 ms 14420 KB Output is correct
5 Correct 7 ms 14420 KB Output is correct
6 Correct 7 ms 14420 KB Output is correct
7 Correct 7 ms 14348 KB Output is correct
8 Correct 9 ms 14460 KB Output is correct
9 Correct 11 ms 14424 KB Output is correct
10 Correct 7 ms 14420 KB Output is correct
11 Correct 8 ms 14436 KB Output is correct
12 Correct 7 ms 14392 KB Output is correct
13 Correct 7 ms 14456 KB Output is correct
14 Correct 7 ms 14436 KB Output is correct
15 Correct 7 ms 14396 KB Output is correct
16 Correct 7 ms 14420 KB Output is correct
17 Correct 7 ms 14420 KB Output is correct
18 Correct 7 ms 14420 KB Output is correct
19 Correct 7 ms 14400 KB Output is correct
20 Correct 7 ms 14420 KB Output is correct
21 Correct 8 ms 14664 KB Output is correct
22 Correct 8 ms 14768 KB Output is correct
23 Correct 8 ms 14664 KB Output is correct
24 Correct 7 ms 14676 KB Output is correct
25 Correct 11 ms 14708 KB Output is correct
26 Correct 9 ms 14660 KB Output is correct
27 Correct 8 ms 14500 KB Output is correct
28 Correct 8 ms 14684 KB Output is correct
29 Correct 9 ms 14672 KB Output is correct
30 Correct 9 ms 14668 KB Output is correct
31 Correct 10 ms 14628 KB Output is correct
32 Correct 9 ms 14648 KB Output is correct
33 Correct 8 ms 14676 KB Output is correct
34 Correct 7 ms 14664 KB Output is correct
35 Correct 8 ms 14676 KB Output is correct
36 Correct 7 ms 14660 KB Output is correct
37 Correct 8 ms 14572 KB Output is correct
38 Correct 8 ms 14656 KB Output is correct
39 Correct 107 ms 37416 KB Output is correct
40 Correct 105 ms 37444 KB Output is correct
41 Correct 110 ms 37076 KB Output is correct
42 Correct 110 ms 36668 KB Output is correct
43 Correct 148 ms 49444 KB Output is correct
44 Correct 124 ms 40124 KB Output is correct
45 Correct 98 ms 36804 KB Output is correct
46 Correct 51 ms 43440 KB Output is correct
47 Correct 159 ms 49400 KB Output is correct
48 Correct 253 ms 83388 KB Output is correct
49 Correct 239 ms 81940 KB Output is correct
50 Correct 170 ms 47524 KB Output is correct
51 Correct 180 ms 47632 KB Output is correct
52 Correct 234 ms 47608 KB Output is correct
53 Correct 217 ms 52424 KB Output is correct
54 Correct 308 ms 84412 KB Output is correct
55 Correct 21 ms 17648 KB Output is correct
56 Correct 13 ms 16420 KB Output is correct
57 Correct 62 ms 34788 KB Output is correct
58 Correct 48 ms 28260 KB Output is correct
59 Correct 76 ms 49364 KB Output is correct
60 Correct 232 ms 82384 KB Output is correct
61 Correct 197 ms 50872 KB Output is correct
62 Correct 153 ms 47432 KB Output is correct
63 Correct 217 ms 47592 KB Output is correct
64 Correct 407 ms 102296 KB Output is correct
65 Correct 385 ms 100020 KB Output is correct
66 Correct 248 ms 78800 KB Output is correct
67 Correct 165 ms 41472 KB Output is correct
68 Correct 321 ms 63812 KB Output is correct
69 Correct 344 ms 68820 KB Output is correct
70 Correct 299 ms 61888 KB Output is correct