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답안 #877898

# 제출 시각 아이디 문제 언어 결과 실행 시간 메모리
877898 2023-11-23T20:39:49 Z raul2008487 경주 (Race) (IOI11_race) C++17
100 / 100
 656 ms 50404 KB 
#include<bits/stdc++.h>
#include "race.h"
#define ll long long
#define pb push_back
#define eb emplace_back
#define vl vector<ll>
#define fi first
#define se second
#define in insert
#define mpr make_pair
#define lg(x) __lg(x)
#define bpc(x) __builtin_popcount(x)
#define all(v) v.begin(), v.end()
#define endl "\n"
using namespace std;
const int sz = 2e5+5;
const ll inf = 1000000000000000;
bool used[sz];
vector<pair<ll,ll>> arr, adj[sz];
ll n, k, ss[sz], res = inf;
map<ll,ll> mp;
void construct(ll node, ll p){
    ss[node] = 1;
    for(pair<ll,ll> edge: adj[node]){
        if(!used[edge.fi] && edge.fi != p){
            construct(edge.fi, node);
            ss[node] += ss[edge.fi];
        }
    }
}
ll centroid(ll v, ll p, ll cs){
    for(pair<ll,ll> edge: adj[v]){
        if(edge.fi == p || used[edge.fi]){continue;}
        if(ss[edge.fi] > (cs>>1)){
            return centroid(edge.fi, v, cs);
        }
    }
    return v;
}
void init(ll v, ll p, ll w, ll we){
    if(mp.find(k - w) != mp.end()){
        res = min(res, mp[k-w] + we);
    }
    arr.pb({w, we});
    for(pair<ll,ll> edge: adj[v]){
        if(used[v] || edge.fi == p){continue;}
        init(edge.fi, v, w + edge.se, we + 1);
    }
}
void calc(ll node){
    mp.clear();
    construct(node, -1);
    ll c = centroid(node, -1, ss[node]);
    mp[0] = 0;
    for(pair<ll,ll> edge: adj[c]){
        if(used[edge.fi]){continue;}
        arr.clear();
        init(edge.fi, c, edge.se, 1);
        for(pair<ll,ll> y: arr){
            if(mp.find(y.fi) == mp.end()){
                mp[y.fi] = y.se;
            }
            else{
                mp[y.fi] = min(mp[y.fi], y.se);
            }
        }
    }
    used[c] = 1;
    for(pair<ll,ll> edge: adj[c]){
        if(!used[edge.fi]){
            calc(edge.fi);
        }
    }
}
int best_path(int N, int K, int H[][2], int L[])
{
    n = N;
    k = K;
    for(ll i=0;i<n-1;i++){
        adj[H[i][0]].pb({H[i][1], L[i]});
        adj[H[i][1]].pb({H[i][0], L[i]});
    }
    calc(0);
    if(res == inf){
        return -1;
    }
    return res;
}

Subtask #1
9.0 / 9.0

# 결과 실행 시간 메모리 Grader output
1 Correct 2 ms 10336 KB Output is correct
2 Correct 2 ms 10332 KB Output is correct
3 Correct 2 ms 10340 KB Output is correct
4 Correct 2 ms 10332 KB Output is correct
5 Correct 2 ms 10332 KB Output is correct
6 Correct 2 ms 10340 KB Output is correct
7 Correct 2 ms 10332 KB Output is correct
8 Correct 2 ms 10332 KB Output is correct
9 Correct 2 ms 10340 KB Output is correct
10 Correct 2 ms 10332 KB Output is correct
11 Correct 3 ms 10332 KB Output is correct
12 Correct 3 ms 10332 KB Output is correct
13 Correct 3 ms 10164 KB Output is correct
14 Correct 2 ms 10332 KB Output is correct
15 Correct 2 ms 10332 KB Output is correct
16 Correct 2 ms 10328 KB Output is correct
17 Correct 2 ms 10328 KB Output is correct
18 Correct 2 ms 10328 KB Output is correct

Subtask #2
12.0 / 12.0

# 결과 실행 시간 메모리 Grader output
1 Correct 2 ms 10336 KB Output is correct
2 Correct 2 ms 10332 KB Output is correct
3 Correct 2 ms 10340 KB Output is correct
4 Correct 2 ms 10332 KB Output is correct
5 Correct 2 ms 10332 KB Output is correct
6 Correct 2 ms 10340 KB Output is correct
7 Correct 2 ms 10332 KB Output is correct
8 Correct 2 ms 10332 KB Output is correct
9 Correct 2 ms 10340 KB Output is correct
10 Correct 2 ms 10332 KB Output is correct
11 Correct 3 ms 10332 KB Output is correct
12 Correct 3 ms 10332 KB Output is correct
13 Correct 3 ms 10164 KB Output is correct
14 Correct 2 ms 10332 KB Output is correct
15 Correct 2 ms 10332 KB Output is correct
16 Correct 2 ms 10328 KB Output is correct
17 Correct 2 ms 10328 KB Output is correct
18 Correct 2 ms 10328 KB Output is correct
19 Correct 2 ms 10332 KB Output is correct
20 Correct 2 ms 10332 KB Output is correct
21 Correct 3 ms 10444 KB Output is correct
22 Correct 4 ms 10360 KB Output is correct
23 Correct 4 ms 10332 KB Output is correct
24 Correct 3 ms 10332 KB Output is correct
25 Correct 3 ms 10332 KB Output is correct
26 Correct 3 ms 10332 KB Output is correct
27 Correct 4 ms 10340 KB Output is correct
28 Correct 3 ms 10332 KB Output is correct
29 Correct 4 ms 10332 KB Output is correct
30 Correct 3 ms 10332 KB Output is correct
31 Correct 4 ms 10356 KB Output is correct
32 Correct 4 ms 10328 KB Output is correct
33 Correct 3 ms 10328 KB Output is correct
34 Correct 3 ms 10332 KB Output is correct
35 Correct 3 ms 10332 KB Output is correct
36 Correct 3 ms 10332 KB Output is correct
37 Correct 3 ms 10428 KB Output is correct
38 Correct 3 ms 10328 KB Output is correct

Subtask #3
22.0 / 22.0

# 결과 실행 시간 메모리 Grader output
1 Correct 2 ms 10336 KB Output is correct
2 Correct 2 ms 10332 KB Output is correct
3 Correct 2 ms 10340 KB Output is correct
4 Correct 2 ms 10332 KB Output is correct
5 Correct 2 ms 10332 KB Output is correct
6 Correct 2 ms 10340 KB Output is correct
7 Correct 2 ms 10332 KB Output is correct
8 Correct 2 ms 10332 KB Output is correct
9 Correct 2 ms 10340 KB Output is correct
10 Correct 2 ms 10332 KB Output is correct
11 Correct 3 ms 10332 KB Output is correct
12 Correct 3 ms 10332 KB Output is correct
13 Correct 3 ms 10164 KB Output is correct
14 Correct 2 ms 10332 KB Output is correct
15 Correct 2 ms 10332 KB Output is correct
16 Correct 2 ms 10328 KB Output is correct
17 Correct 2 ms 10328 KB Output is correct
18 Correct 2 ms 10328 KB Output is correct
19 Correct 161 ms 19664 KB Output is correct
20 Correct 163 ms 19664 KB Output is correct
21 Correct 147 ms 19772 KB Output is correct
22 Correct 141 ms 19920 KB Output is correct
23 Correct 224 ms 20276 KB Output is correct
24 Correct 102 ms 18908 KB Output is correct
25 Correct 144 ms 25036 KB Output is correct
26 Correct 83 ms 25560 KB Output is correct
27 Correct 223 ms 25724 KB Output is correct
28 Correct 627 ms 50404 KB Output is correct
29 Correct 605 ms 49520 KB Output is correct
30 Correct 222 ms 25784 KB Output is correct
31 Correct 209 ms 25684 KB Output is correct
32 Correct 255 ms 25832 KB Output is correct
33 Correct 382 ms 26192 KB Output is correct
34 Correct 594 ms 38232 KB Output is correct

Subtask #4
57.0 / 57.0

# 결과 실행 시간 메모리 Grader output
1 Correct 2 ms 10336 KB Output is correct
2 Correct 2 ms 10332 KB Output is correct
3 Correct 2 ms 10340 KB Output is correct
4 Correct 2 ms 10332 KB Output is correct
5 Correct 2 ms 10332 KB Output is correct
6 Correct 2 ms 10340 KB Output is correct
7 Correct 2 ms 10332 KB Output is correct
8 Correct 2 ms 10332 KB Output is correct
9 Correct 2 ms 10340 KB Output is correct
10 Correct 2 ms 10332 KB Output is correct
11 Correct 3 ms 10332 KB Output is correct
12 Correct 3 ms 10332 KB Output is correct
13 Correct 3 ms 10164 KB Output is correct
14 Correct 2 ms 10332 KB Output is correct
15 Correct 2 ms 10332 KB Output is correct
16 Correct 2 ms 10328 KB Output is correct
17 Correct 2 ms 10328 KB Output is correct
18 Correct 2 ms 10328 KB Output is correct
19 Correct 2 ms 10332 KB Output is correct
20 Correct 2 ms 10332 KB Output is correct
21 Correct 3 ms 10444 KB Output is correct
22 Correct 4 ms 10360 KB Output is correct
23 Correct 4 ms 10332 KB Output is correct
24 Correct 3 ms 10332 KB Output is correct
25 Correct 3 ms 10332 KB Output is correct
26 Correct 3 ms 10332 KB Output is correct
27 Correct 4 ms 10340 KB Output is correct
28 Correct 3 ms 10332 KB Output is correct
29 Correct 4 ms 10332 KB Output is correct
30 Correct 3 ms 10332 KB Output is correct
31 Correct 4 ms 10356 KB Output is correct
32 Correct 4 ms 10328 KB Output is correct
33 Correct 3 ms 10328 KB Output is correct
34 Correct 3 ms 10332 KB Output is correct
35 Correct 3 ms 10332 KB Output is correct
36 Correct 3 ms 10332 KB Output is correct
37 Correct 3 ms 10428 KB Output is correct
38 Correct 3 ms 10328 KB Output is correct
39 Correct 161 ms 19664 KB Output is correct
40 Correct 163 ms 19664 KB Output is correct
41 Correct 147 ms 19772 KB Output is correct
42 Correct 141 ms 19920 KB Output is correct
43 Correct 224 ms 20276 KB Output is correct
44 Correct 102 ms 18908 KB Output is correct
45 Correct 144 ms 25036 KB Output is correct
46 Correct 83 ms 25560 KB Output is correct
47 Correct 223 ms 25724 KB Output is correct
48 Correct 627 ms 50404 KB Output is correct
49 Correct 605 ms 49520 KB Output is correct
50 Correct 222 ms 25784 KB Output is correct
51 Correct 209 ms 25684 KB Output is correct
52 Correct 255 ms 25832 KB Output is correct
53 Correct 382 ms 26192 KB Output is correct
54 Correct 594 ms 38232 KB Output is correct
55 Correct 18 ms 11376 KB Output is correct
56 Correct 11 ms 11124 KB Output is correct
57 Correct 107 ms 20080 KB Output is correct
58 Correct 43 ms 18064 KB Output is correct
59 Correct 238 ms 30156 KB Output is correct
60 Correct 630 ms 49588 KB Output is correct
61 Correct 261 ms 27968 KB Output is correct
62 Correct 209 ms 26196 KB Output is correct
63 Correct 244 ms 26256 KB Output is correct
64 Correct 656 ms 33552 KB Output is correct
65 Correct 583 ms 39904 KB Output is correct
66 Correct 643 ms 49908 KB Output is correct
67 Correct 100 ms 25272 KB Output is correct
68 Correct 383 ms 38144 KB Output is correct
69 Correct 333 ms 38152 KB Output is correct
70 Correct 327 ms 36968 KB Output is correct