oj.uz

답안 #686480

# 제출 시각 아이디 문제 언어 결과 실행 시간 메모리
686480 2023-01-25T10:39:23 Z pragmatist 경주 (Race) (IOI11_race) C++17
100 / 100
 449 ms 84444 KB 
#include "race.h"
#include<bits/stdc++.h>
 
#define sz(v) (int)v.size()
#define ll long long
#define pb push_back
#define x first
#define y second
#define all(v) v.begin(), v.end()
#define rall(v) v.rbegin(), v.rend()
#define nl "\n"

using namespace std;
using pii = pair<int, int>;

const int N = (int)2e5 + 7; // make sure this is right
const int inf = (int)1e9;
const ll INF = (ll)3e18 + 7; 
const ll MOD = (ll)1e9 + 7; // make sure this is right

pii dir[] = {{1, 0}, {0, 1}, {-1, 0}, {0, -1}};

int n, k, d[N], ans = inf;
vector<pii> g[N];
map<ll, int> mn[N];

int comb(map<ll, int> &a, map<ll, int> &b, int q, ll w) {
	int res = inf;
	if(sz(a) < sz(b)) {
		for(auto [x, y] : a) {
			if(b.count(k + 2 * w - x)) {
				res = min(res, y + b[k + 2 * w - x] - 2 * q);
			}
		}
		for(auto [x, y] : a) {
			if(!b.count(x)) {
				b[x] = y;
			} else b[x] = min(b[x], y);
		}
		a.swap(b);
		b.clear();				
	} else {
		for(auto [x, y] : b) {
			if(a.count(k + 2 * w - x)) {
				res = min(res, y + a[k + 2 * w - x] - 2 * q);
			}
		}
		for(auto [x, y] : b) {
			if(!a.count(x)) a[x] = y;
			else a[x] = min(a[x], y);
		}  
	}
	return res;
} 
       
void dfs(int v, int pr, ll len) {
	for(auto [to, w] : g[v]) {
		if(to == pr) continue;
		d[to] = d[v] + 1;
		dfs(to, v, len + w);  
	}	
	for(auto [to, w] : g[v]) {
		ans = min(ans, comb(mn[v], mn[to], d[v], len));
	}
	mn[v][len] = d[v];
	if(mn[v].count(len + k)) {
		ans = min(ans, mn[v][len + k] - d[v]);
	}
}

int best_path(int n_, int k_, int h_[][2], int l_[]) {
	n = n_;
	k = k_;
	for(int i = 0; i < n - 1; ++i) {
		h_[i][0]++;
		h_[i][1]++;
		g[h_[i][0]].pb({h_[i][1], l_[i]});
		g[h_[i][1]].pb({h_[i][0], l_[i]});
	}
	dfs(1, 1, 0);
	return (ans == inf ? -1 : ans);
}

Subtask #1
9.0 / 9.0

# 결과 실행 시간 메모리 Grader output
1 Correct 8 ms 14420 KB Output is correct
2 Correct 7 ms 14420 KB Output is correct
3 Correct 7 ms 14420 KB Output is correct
4 Correct 7 ms 14420 KB Output is correct
5 Correct 7 ms 14320 KB Output is correct
6 Correct 7 ms 14392 KB Output is correct
7 Correct 7 ms 14420 KB Output is correct
8 Correct 8 ms 14420 KB Output is correct
9 Correct 9 ms 14420 KB Output is correct
10 Correct 8 ms 14420 KB Output is correct
11 Correct 8 ms 14420 KB Output is correct
12 Correct 9 ms 14404 KB Output is correct
13 Correct 9 ms 14432 KB Output is correct
14 Correct 8 ms 14420 KB Output is correct
15 Correct 8 ms 14420 KB Output is correct
16 Correct 8 ms 14400 KB Output is correct
17 Correct 7 ms 14380 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 8 ms 14420 KB Output is correct
2 Correct 7 ms 14420 KB Output is correct
3 Correct 7 ms 14420 KB Output is correct
4 Correct 7 ms 14420 KB Output is correct
5 Correct 7 ms 14320 KB Output is correct
6 Correct 7 ms 14392 KB Output is correct
7 Correct 7 ms 14420 KB Output is correct
8 Correct 8 ms 14420 KB Output is correct
9 Correct 9 ms 14420 KB Output is correct
10 Correct 8 ms 14420 KB Output is correct
11 Correct 8 ms 14420 KB Output is correct
12 Correct 9 ms 14404 KB Output is correct
13 Correct 9 ms 14432 KB Output is correct
14 Correct 8 ms 14420 KB Output is correct
15 Correct 8 ms 14420 KB Output is correct
16 Correct 8 ms 14400 KB Output is correct
17 Correct 7 ms 14380 KB Output is correct
18 Correct 7 ms 14420 KB Output is correct
19 Correct 9 ms 14512 KB Output is correct
20 Correct 8 ms 14360 KB Output is correct
21 Correct 8 ms 14608 KB Output is correct
22 Correct 9 ms 14608 KB Output is correct
23 Correct 9 ms 14548 KB Output is correct
24 Correct 9 ms 14548 KB Output is correct
25 Correct 8 ms 14624 KB Output is correct
26 Correct 8 ms 14676 KB Output is correct
27 Correct 8 ms 14512 KB Output is correct
28 Correct 8 ms 14548 KB Output is correct
29 Correct 8 ms 14544 KB Output is correct
30 Correct 8 ms 14548 KB Output is correct
31 Correct 9 ms 14548 KB Output is correct
32 Correct 9 ms 14548 KB Output is correct
33 Correct 9 ms 14548 KB Output is correct
34 Correct 8 ms 14548 KB Output is correct
35 Correct 10 ms 14548 KB Output is correct
36 Correct 11 ms 14584 KB Output is correct
37 Correct 8 ms 14536 KB Output is correct
38 Correct 8 ms 14496 KB Output is correct

Subtask #3
22.0 / 22.0

# 결과 실행 시간 메모리 Grader output
1 Correct 8 ms 14420 KB Output is correct
2 Correct 7 ms 14420 KB Output is correct
3 Correct 7 ms 14420 KB Output is correct
4 Correct 7 ms 14420 KB Output is correct
5 Correct 7 ms 14320 KB Output is correct
6 Correct 7 ms 14392 KB Output is correct
7 Correct 7 ms 14420 KB Output is correct
8 Correct 8 ms 14420 KB Output is correct
9 Correct 9 ms 14420 KB Output is correct
10 Correct 8 ms 14420 KB Output is correct
11 Correct 8 ms 14420 KB Output is correct
12 Correct 9 ms 14404 KB Output is correct
13 Correct 9 ms 14432 KB Output is correct
14 Correct 8 ms 14420 KB Output is correct
15 Correct 8 ms 14420 KB Output is correct
16 Correct 8 ms 14400 KB Output is correct
17 Correct 7 ms 14380 KB Output is correct
18 Correct 7 ms 14420 KB Output is correct
19 Correct 108 ms 28888 KB Output is correct
20 Correct 105 ms 28600 KB Output is correct
21 Correct 107 ms 29236 KB Output is correct
22 Correct 112 ms 30428 KB Output is correct
23 Correct 143 ms 38288 KB Output is correct
24 Correct 122 ms 37732 KB Output is correct
25 Correct 79 ms 27632 KB Output is correct
26 Correct 49 ms 32968 KB Output is correct
27 Correct 179 ms 40836 KB Output is correct
28 Correct 232 ms 64380 KB Output is correct
29 Correct 224 ms 63428 KB Output is correct
30 Correct 180 ms 40728 KB Output is correct
31 Correct 217 ms 40776 KB Output is correct
32 Correct 232 ms 40920 KB Output is correct
33 Correct 183 ms 34500 KB Output is correct
34 Correct 328 ms 58384 KB Output is correct

Subtask #4
57.0 / 57.0

# 결과 실행 시간 메모리 Grader output
1 Correct 8 ms 14420 KB Output is correct
2 Correct 7 ms 14420 KB Output is correct
3 Correct 7 ms 14420 KB Output is correct
4 Correct 7 ms 14420 KB Output is correct
5 Correct 7 ms 14320 KB Output is correct
6 Correct 7 ms 14392 KB Output is correct
7 Correct 7 ms 14420 KB Output is correct
8 Correct 8 ms 14420 KB Output is correct
9 Correct 9 ms 14420 KB Output is correct
10 Correct 8 ms 14420 KB Output is correct
11 Correct 8 ms 14420 KB Output is correct
12 Correct 9 ms 14404 KB Output is correct
13 Correct 9 ms 14432 KB Output is correct
14 Correct 8 ms 14420 KB Output is correct
15 Correct 8 ms 14420 KB Output is correct
16 Correct 8 ms 14400 KB Output is correct
17 Correct 7 ms 14380 KB Output is correct
18 Correct 7 ms 14420 KB Output is correct
19 Correct 9 ms 14512 KB Output is correct
20 Correct 8 ms 14360 KB Output is correct
21 Correct 8 ms 14608 KB Output is correct
22 Correct 9 ms 14608 KB Output is correct
23 Correct 9 ms 14548 KB Output is correct
24 Correct 9 ms 14548 KB Output is correct
25 Correct 8 ms 14624 KB Output is correct
26 Correct 8 ms 14676 KB Output is correct
27 Correct 8 ms 14512 KB Output is correct
28 Correct 8 ms 14548 KB Output is correct
29 Correct 8 ms 14544 KB Output is correct
30 Correct 8 ms 14548 KB Output is correct
31 Correct 9 ms 14548 KB Output is correct
32 Correct 9 ms 14548 KB Output is correct
33 Correct 9 ms 14548 KB Output is correct
34 Correct 8 ms 14548 KB Output is correct
35 Correct 10 ms 14548 KB Output is correct
36 Correct 11 ms 14584 KB Output is correct
37 Correct 8 ms 14536 KB Output is correct
38 Correct 8 ms 14496 KB Output is correct
39 Correct 108 ms 28888 KB Output is correct
40 Correct 105 ms 28600 KB Output is correct
41 Correct 107 ms 29236 KB Output is correct
42 Correct 112 ms 30428 KB Output is correct
43 Correct 143 ms 38288 KB Output is correct
44 Correct 122 ms 37732 KB Output is correct
45 Correct 79 ms 27632 KB Output is correct
46 Correct 49 ms 32968 KB Output is correct
47 Correct 179 ms 40836 KB Output is correct
48 Correct 232 ms 64380 KB Output is correct
49 Correct 224 ms 63428 KB Output is correct
50 Correct 180 ms 40728 KB Output is correct
51 Correct 217 ms 40776 KB Output is correct
52 Correct 232 ms 40920 KB Output is correct
53 Correct 183 ms 34500 KB Output is correct
54 Correct 328 ms 58384 KB Output is correct
55 Correct 20 ms 16888 KB Output is correct
56 Correct 14 ms 15556 KB Output is correct
57 Correct 69 ms 28108 KB Output is correct
58 Correct 54 ms 27112 KB Output is correct
59 Correct 81 ms 39104 KB Output is correct
60 Correct 241 ms 63532 KB Output is correct
61 Correct 209 ms 44356 KB Output is correct
62 Correct 182 ms 40888 KB Output is correct
63 Correct 214 ms 40860 KB Output is correct
64 Correct 417 ms 68132 KB Output is correct
65 Correct 449 ms 84444 KB Output is correct
66 Correct 244 ms 61464 KB Output is correct
67 Correct 173 ms 41292 KB Output is correct
68 Correct 358 ms 59616 KB Output is correct
69 Correct 350 ms 64452 KB Output is correct
70 Correct 300 ms 57628 KB Output is correct