oj.uz

답안 #749267

# 제출 시각 아이디 문제 언어 결과 실행 시간 메모리
749267 2023-05-27T15:40:43 Z aedmhsn 경주 (Race) (IOI11_race) C++17
100 / 100
 613 ms 27796 KB 
#include <bits/stdc++.h>
#include <ext/pb_ds/tree_policy.hpp>
#include <ext/pb_ds/assoc_container.hpp>



using namespace std;
using namespace __gnu_pbds;

#define A first
#define B second
#define MP make_pair
#define ms(a, x) memset(a, x, sizeof(a)) 

#pragma GCC optimize ("Ofast") 
//#pragma GCC optimize ("trapv")

#define boost() ios_base::sync_with_stdio(false); cin.tie(0)

typedef __int128_t vl;
typedef long long ll;
typedef long double ld;
typedef pair<int, int> pii;
typedef pair<ll, ll> pll;
typedef pair<long double, long double> pld;
const int INF = 0x3f3f3f3f;
const ll LLINF = 0x3f3f3f3f3f3f3f3f;
const double PI = acos(-1);

const int mxN=2e5+5, LOG=21;


vector <vector<pii>> adj(mxN);

int sz[mxN], cnt[int(1e6)+5], ans=INF;
bool mark[mxN];

void dfs_sz(int u, int p){
	sz[u]=1;
	for(auto [v, x]:adj[u]){
		if(v == p || mark[v]) continue;
		dfs_sz(v, u);
		sz[u] += sz[v];
	}
	return;
}
int dfs_cntrd(int u, int p, int subsz){
	for(auto [v, x]:adj[u]){
		if(v == p || mark[v]) continue;
		if(sz[v] > subsz/2) return dfs_cntrd(v, u, subsz);
	}
	return u;
}
void dfs_cnt(int u, int x, int d, int p, int mode, int k){
	if(x > k) return;
	(mode ? (mode == 1 ? ans = min(ans, d+cnt[k-x]):cnt[x]=INF):cnt[x] = min(cnt[x], d));
	for(auto [v, dist]:adj[u]){
		if(mark[v] || v == p) continue;
		dfs_cnt(v, dist+x, d+1, u, mode, k);
	}
}
void decompose(int u, int subsz, int k){
	dfs_sz(u, -1);
	int cntrd = dfs_cntrd(u, -1, subsz);
	mark[cntrd]=1;
	for(auto [v, x]:adj[cntrd]){
		if(mark[v]) continue;
		dfs_cnt(v, x, 1, -1, 1, k);
		dfs_cnt(v, x, 1, -1, 0, k);
	}
	ans = min(ans, cnt[k]);
	for(auto [v, x]:adj[cntrd]){
		if(mark[v]) continue;
		dfs_cnt(v, x, 1, -1, 2, k);
	}
	for(auto [v, x]:adj[cntrd]){
		if(mark[v]) continue;
		decompose(v, sz[v], k);
	}
	return;
}

int best_path(int n, int k, int h[mxN][2], int l[mxN]){
	ms(cnt, INF);
	for(int i=0; i<n-1; i++){
		adj[h[i][0]+1].push_back({h[i][1]+1, l[i]});
		adj[h[i][1]+1].push_back({h[i][0]+1, l[i]});
	}
	decompose(1, n, k);
	if(ans == INF) return -1;
	else return ans;
}

Subtask #1
9.0 / 9.0

# 결과 실행 시간 메모리 Grader output
1 Correct 5 ms 8916 KB Output is correct
2 Correct 5 ms 8916 KB Output is correct
3 Correct 5 ms 8916 KB Output is correct
4 Correct 5 ms 8916 KB Output is correct
5 Correct 5 ms 8860 KB Output is correct
6 Correct 5 ms 8916 KB Output is correct
7 Correct 5 ms 8916 KB Output is correct
8 Correct 6 ms 8916 KB Output is correct
9 Correct 5 ms 8916 KB Output is correct
10 Correct 5 ms 8916 KB Output is correct
11 Correct 5 ms 8872 KB Output is correct
12 Correct 5 ms 8916 KB Output is correct
13 Correct 5 ms 8916 KB Output is correct
14 Correct 5 ms 8916 KB Output is correct
15 Correct 4 ms 8916 KB Output is correct
16 Correct 5 ms 8916 KB Output is correct
17 Correct 5 ms 8916 KB Output is correct
18 Correct 4 ms 8864 KB Output is correct

Subtask #2
12.0 / 12.0

# 결과 실행 시간 메모리 Grader output
1 Correct 5 ms 8916 KB Output is correct
2 Correct 5 ms 8916 KB Output is correct
3 Correct 5 ms 8916 KB Output is correct
4 Correct 5 ms 8916 KB Output is correct
5 Correct 5 ms 8860 KB Output is correct
6 Correct 5 ms 8916 KB Output is correct
7 Correct 5 ms 8916 KB Output is correct
8 Correct 6 ms 8916 KB Output is correct
9 Correct 5 ms 8916 KB Output is correct
10 Correct 5 ms 8916 KB Output is correct
11 Correct 5 ms 8872 KB Output is correct
12 Correct 5 ms 8916 KB Output is correct
13 Correct 5 ms 8916 KB Output is correct
14 Correct 5 ms 8916 KB Output is correct
15 Correct 4 ms 8916 KB Output is correct
16 Correct 5 ms 8916 KB Output is correct
17 Correct 5 ms 8916 KB Output is correct
18 Correct 4 ms 8864 KB Output is correct
19 Correct 6 ms 8856 KB Output is correct
20 Correct 5 ms 8916 KB Output is correct
21 Correct 5 ms 8992 KB Output is correct
22 Correct 6 ms 8916 KB Output is correct
23 Correct 6 ms 9000 KB Output is correct
24 Correct 6 ms 8916 KB Output is correct
25 Correct 5 ms 8996 KB Output is correct
26 Correct 6 ms 8916 KB Output is correct
27 Correct 5 ms 8968 KB Output is correct
28 Correct 7 ms 8916 KB Output is correct
29 Correct 7 ms 8916 KB Output is correct
30 Correct 5 ms 8968 KB Output is correct
31 Correct 5 ms 8916 KB Output is correct
32 Correct 6 ms 9004 KB Output is correct
33 Correct 6 ms 8916 KB Output is correct
34 Correct 6 ms 8916 KB Output is correct
35 Correct 5 ms 8916 KB Output is correct
36 Correct 6 ms 8916 KB Output is correct
37 Correct 5 ms 8996 KB Output is correct
38 Correct 6 ms 8916 KB Output is correct

Subtask #3
22.0 / 22.0

# 결과 실행 시간 메모리 Grader output
1 Correct 5 ms 8916 KB Output is correct
2 Correct 5 ms 8916 KB Output is correct
3 Correct 5 ms 8916 KB Output is correct
4 Correct 5 ms 8916 KB Output is correct
5 Correct 5 ms 8860 KB Output is correct
6 Correct 5 ms 8916 KB Output is correct
7 Correct 5 ms 8916 KB Output is correct
8 Correct 6 ms 8916 KB Output is correct
9 Correct 5 ms 8916 KB Output is correct
10 Correct 5 ms 8916 KB Output is correct
11 Correct 5 ms 8872 KB Output is correct
12 Correct 5 ms 8916 KB Output is correct
13 Correct 5 ms 8916 KB Output is correct
14 Correct 5 ms 8916 KB Output is correct
15 Correct 4 ms 8916 KB Output is correct
16 Correct 5 ms 8916 KB Output is correct
17 Correct 5 ms 8916 KB Output is correct
18 Correct 4 ms 8864 KB Output is correct
19 Correct 150 ms 15664 KB Output is correct
20 Correct 147 ms 15508 KB Output is correct
21 Correct 154 ms 15628 KB Output is correct
22 Correct 160 ms 15716 KB Output is correct
23 Correct 79 ms 15820 KB Output is correct
24 Correct 56 ms 15724 KB Output is correct
25 Correct 134 ms 16624 KB Output is correct
26 Correct 109 ms 18124 KB Output is correct
27 Correct 194 ms 22824 KB Output is correct
28 Correct 260 ms 27796 KB Output is correct
29 Correct 248 ms 27340 KB Output is correct
30 Correct 175 ms 22732 KB Output is correct
31 Correct 176 ms 22680 KB Output is correct
32 Correct 205 ms 22780 KB Output is correct
33 Correct 227 ms 21456 KB Output is correct
34 Correct 203 ms 22352 KB Output is correct

Subtask #4
57.0 / 57.0

# 결과 실행 시간 메모리 Grader output
1 Correct 5 ms 8916 KB Output is correct
2 Correct 5 ms 8916 KB Output is correct
3 Correct 5 ms 8916 KB Output is correct
4 Correct 5 ms 8916 KB Output is correct
5 Correct 5 ms 8860 KB Output is correct
6 Correct 5 ms 8916 KB Output is correct
7 Correct 5 ms 8916 KB Output is correct
8 Correct 6 ms 8916 KB Output is correct
9 Correct 5 ms 8916 KB Output is correct
10 Correct 5 ms 8916 KB Output is correct
11 Correct 5 ms 8872 KB Output is correct
12 Correct 5 ms 8916 KB Output is correct
13 Correct 5 ms 8916 KB Output is correct
14 Correct 5 ms 8916 KB Output is correct
15 Correct 4 ms 8916 KB Output is correct
16 Correct 5 ms 8916 KB Output is correct
17 Correct 5 ms 8916 KB Output is correct
18 Correct 4 ms 8864 KB Output is correct
19 Correct 6 ms 8856 KB Output is correct
20 Correct 5 ms 8916 KB Output is correct
21 Correct 5 ms 8992 KB Output is correct
22 Correct 6 ms 8916 KB Output is correct
23 Correct 6 ms 9000 KB Output is correct
24 Correct 6 ms 8916 KB Output is correct
25 Correct 5 ms 8996 KB Output is correct
26 Correct 6 ms 8916 KB Output is correct
27 Correct 5 ms 8968 KB Output is correct
28 Correct 7 ms 8916 KB Output is correct
29 Correct 7 ms 8916 KB Output is correct
30 Correct 5 ms 8968 KB Output is correct
31 Correct 5 ms 8916 KB Output is correct
32 Correct 6 ms 9004 KB Output is correct
33 Correct 6 ms 8916 KB Output is correct
34 Correct 6 ms 8916 KB Output is correct
35 Correct 5 ms 8916 KB Output is correct
36 Correct 6 ms 8916 KB Output is correct
37 Correct 5 ms 8996 KB Output is correct
38 Correct 6 ms 8916 KB Output is correct
39 Correct 150 ms 15664 KB Output is correct
40 Correct 147 ms 15508 KB Output is correct
41 Correct 154 ms 15628 KB Output is correct
42 Correct 160 ms 15716 KB Output is correct
43 Correct 79 ms 15820 KB Output is correct
44 Correct 56 ms 15724 KB Output is correct
45 Correct 134 ms 16624 KB Output is correct
46 Correct 109 ms 18124 KB Output is correct
47 Correct 194 ms 22824 KB Output is correct
48 Correct 260 ms 27796 KB Output is correct
49 Correct 248 ms 27340 KB Output is correct
50 Correct 175 ms 22732 KB Output is correct
51 Correct 176 ms 22680 KB Output is correct
52 Correct 205 ms 22780 KB Output is correct
53 Correct 227 ms 21456 KB Output is correct
54 Correct 203 ms 22352 KB Output is correct
55 Correct 14 ms 9508 KB Output is correct
56 Correct 20 ms 9508 KB Output is correct
57 Correct 99 ms 15776 KB Output is correct
58 Correct 38 ms 15480 KB Output is correct
59 Correct 120 ms 18372 KB Output is correct
60 Correct 488 ms 27440 KB Output is correct
61 Correct 197 ms 22816 KB Output is correct
62 Correct 218 ms 22652 KB Output is correct
63 Correct 331 ms 22768 KB Output is correct
64 Correct 613 ms 23036 KB Output is correct
65 Correct 224 ms 23532 KB Output is correct
66 Correct 381 ms 26504 KB Output is correct
67 Correct 135 ms 23332 KB Output is correct
68 Correct 311 ms 23528 KB Output is correct
69 Correct 304 ms 23672 KB Output is correct
70 Correct 305 ms 22928 KB Output is correct