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답안 #691899

# 제출 시각 아이디 문제 언어 결과 실행 시간 메모리
691899 2023-01-31T22:41:22 Z EthanKim8683 경주 (Race) (IOI11_race) C++17
100 / 100
 504 ms 98248 KB 
#include<bits/stdc++.h>
using namespace std;
using I=int;
using Lli=long long int;
const I N=200000;
const I MAX=1e9;
vector<pair<I,I>>adjs[N];
map<Lli,I>vals[N];
I res=MAX;
I len;
void dfs(I a,I p=-1,I dep1=0,Lli dis1=0){
  vals[a][dis1]=dep1;
  for(auto[b,l]:adjs[a])if(b!=p){
    dfs(b,a,dep1+1,dis1+l);
    if(vals[b].size()>vals[a].size())swap(vals[a],vals[b]);
    for(auto[dis2,dep2]:vals[b]){
      Lli dis3=len-(dis2-dis1)+dis1;
      if(!vals[a].count(dis3))continue;
      res=min(res,vals[a][dis3]+dep2-dep1*2);
    }
    for(auto[dis2,dep2]:vals[b]){
      if(!vals[a].count(dis2))vals[a][dis2]=MAX;
      vals[a][dis2]=min(vals[a][dis2],dep2);
    }
  }
}
I best_path(I n,I k,I h_arr[][2],I l_arr[]){
  len=k;
  for(I i=0;i<n-1;i++){
    I a=h_arr[i][0],b=h_arr[i][1],l=l_arr[i];
    adjs[a].push_back({b,l});
    adjs[b].push_back({a,l});
  }
  dfs(0);
  return res==MAX?-1:res;
}
#ifdef ETHANKIM8683
I main(){
  cin.tie(0)->sync_with_stdio(0);
  I n,k;cin>>n>>k;
  I h_arr[n-1][2],l_arr[n-1];
  for(I i=0;i<n;i++)cin>>h_arr[i][0]>>h_arr[i][1]>>l_arr[i];
  printf("%i\n",best_path(n,k,h_arr,l_arr));
}
#endif

Subtask #1
9.0 / 9.0

# 결과 실행 시간 메모리 Grader output
1 Correct 7 ms 14420 KB Output is correct
2 Correct 7 ms 14420 KB Output is correct
3 Correct 8 ms 14420 KB Output is correct
4 Correct 7 ms 14428 KB Output is correct
5 Correct 7 ms 14424 KB Output is correct
6 Correct 7 ms 14420 KB Output is correct
7 Correct 9 ms 14420 KB Output is correct
8 Correct 10 ms 14368 KB Output is correct
9 Correct 11 ms 14360 KB Output is correct
10 Correct 8 ms 14372 KB Output is correct
11 Correct 8 ms 14360 KB Output is correct
12 Correct 9 ms 14348 KB Output is correct
13 Correct 7 ms 14432 KB Output is correct
14 Correct 7 ms 14420 KB Output is correct
15 Correct 10 ms 14420 KB Output is correct
16 Correct 9 ms 14420 KB Output is correct
17 Correct 9 ms 14400 KB Output is correct
18 Correct 7 ms 14432 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 7 ms 14420 KB Output is correct
3 Correct 8 ms 14420 KB Output is correct
4 Correct 7 ms 14428 KB Output is correct
5 Correct 7 ms 14424 KB Output is correct
6 Correct 7 ms 14420 KB Output is correct
7 Correct 9 ms 14420 KB Output is correct
8 Correct 10 ms 14368 KB Output is correct
9 Correct 11 ms 14360 KB Output is correct
10 Correct 8 ms 14372 KB Output is correct
11 Correct 8 ms 14360 KB Output is correct
12 Correct 9 ms 14348 KB Output is correct
13 Correct 7 ms 14432 KB Output is correct
14 Correct 7 ms 14420 KB Output is correct
15 Correct 10 ms 14420 KB Output is correct
16 Correct 9 ms 14420 KB Output is correct
17 Correct 9 ms 14400 KB Output is correct
18 Correct 7 ms 14432 KB Output is correct
19 Correct 7 ms 14292 KB Output is correct
20 Correct 8 ms 14420 KB Output is correct
21 Correct 8 ms 14596 KB Output is correct
22 Correct 8 ms 14676 KB Output is correct
23 Correct 10 ms 14588 KB Output is correct
24 Correct 9 ms 14676 KB Output is correct
25 Correct 10 ms 14676 KB Output is correct
26 Correct 9 ms 14676 KB Output is correct
27 Correct 8 ms 14548 KB Output is correct
28 Correct 10 ms 14676 KB Output is correct
29 Correct 9 ms 14676 KB Output is correct
30 Correct 10 ms 14584 KB Output is correct
31 Correct 9 ms 14676 KB Output is correct
32 Correct 10 ms 14652 KB Output is correct
33 Correct 11 ms 14808 KB Output is correct
34 Correct 9 ms 14580 KB Output is correct
35 Correct 8 ms 14568 KB Output is correct
36 Correct 8 ms 14548 KB Output is correct
37 Correct 8 ms 14548 KB Output is correct
38 Correct 8 ms 14548 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 7 ms 14420 KB Output is correct
3 Correct 8 ms 14420 KB Output is correct
4 Correct 7 ms 14428 KB Output is correct
5 Correct 7 ms 14424 KB Output is correct
6 Correct 7 ms 14420 KB Output is correct
7 Correct 9 ms 14420 KB Output is correct
8 Correct 10 ms 14368 KB Output is correct
9 Correct 11 ms 14360 KB Output is correct
10 Correct 8 ms 14372 KB Output is correct
11 Correct 8 ms 14360 KB Output is correct
12 Correct 9 ms 14348 KB Output is correct
13 Correct 7 ms 14432 KB Output is correct
14 Correct 7 ms 14420 KB Output is correct
15 Correct 10 ms 14420 KB Output is correct
16 Correct 9 ms 14420 KB Output is correct
17 Correct 9 ms 14400 KB Output is correct
18 Correct 7 ms 14432 KB Output is correct
19 Correct 115 ms 34848 KB Output is correct
20 Correct 121 ms 34804 KB Output is correct
21 Correct 116 ms 34508 KB Output is correct
22 Correct 144 ms 34056 KB Output is correct
23 Correct 176 ms 46788 KB Output is correct
24 Correct 131 ms 37444 KB Output is correct
25 Correct 103 ms 34948 KB Output is correct
26 Correct 56 ms 42440 KB Output is correct
27 Correct 183 ms 43764 KB Output is correct
28 Correct 339 ms 82744 KB Output is correct
29 Correct 314 ms 80992 KB Output is correct
30 Correct 204 ms 43588 KB Output is correct
31 Correct 193 ms 43628 KB Output is correct
32 Correct 249 ms 43648 KB Output is correct
33 Correct 246 ms 48640 KB Output is correct
34 Correct 383 ms 80580 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 7 ms 14420 KB Output is correct
3 Correct 8 ms 14420 KB Output is correct
4 Correct 7 ms 14428 KB Output is correct
5 Correct 7 ms 14424 KB Output is correct
6 Correct 7 ms 14420 KB Output is correct
7 Correct 9 ms 14420 KB Output is correct
8 Correct 10 ms 14368 KB Output is correct
9 Correct 11 ms 14360 KB Output is correct
10 Correct 8 ms 14372 KB Output is correct
11 Correct 8 ms 14360 KB Output is correct
12 Correct 9 ms 14348 KB Output is correct
13 Correct 7 ms 14432 KB Output is correct
14 Correct 7 ms 14420 KB Output is correct
15 Correct 10 ms 14420 KB Output is correct
16 Correct 9 ms 14420 KB Output is correct
17 Correct 9 ms 14400 KB Output is correct
18 Correct 7 ms 14432 KB Output is correct
19 Correct 7 ms 14292 KB Output is correct
20 Correct 8 ms 14420 KB Output is correct
21 Correct 8 ms 14596 KB Output is correct
22 Correct 8 ms 14676 KB Output is correct
23 Correct 10 ms 14588 KB Output is correct
24 Correct 9 ms 14676 KB Output is correct
25 Correct 10 ms 14676 KB Output is correct
26 Correct 9 ms 14676 KB Output is correct
27 Correct 8 ms 14548 KB Output is correct
28 Correct 10 ms 14676 KB Output is correct
29 Correct 9 ms 14676 KB Output is correct
30 Correct 10 ms 14584 KB Output is correct
31 Correct 9 ms 14676 KB Output is correct
32 Correct 10 ms 14652 KB Output is correct
33 Correct 11 ms 14808 KB Output is correct
34 Correct 9 ms 14580 KB Output is correct
35 Correct 8 ms 14568 KB Output is correct
36 Correct 8 ms 14548 KB Output is correct
37 Correct 8 ms 14548 KB Output is correct
38 Correct 8 ms 14548 KB Output is correct
39 Correct 115 ms 34848 KB Output is correct
40 Correct 121 ms 34804 KB Output is correct
41 Correct 116 ms 34508 KB Output is correct
42 Correct 144 ms 34056 KB Output is correct
43 Correct 176 ms 46788 KB Output is correct
44 Correct 131 ms 37444 KB Output is correct
45 Correct 103 ms 34948 KB Output is correct
46 Correct 56 ms 42440 KB Output is correct
47 Correct 183 ms 43764 KB Output is correct
48 Correct 339 ms 82744 KB Output is correct
49 Correct 314 ms 80992 KB Output is correct
50 Correct 204 ms 43588 KB Output is correct
51 Correct 193 ms 43628 KB Output is correct
52 Correct 249 ms 43648 KB Output is correct
53 Correct 246 ms 48640 KB Output is correct
54 Correct 383 ms 80580 KB Output is correct
55 Correct 23 ms 17492 KB Output is correct
56 Correct 17 ms 16212 KB Output is correct
57 Correct 79 ms 32528 KB Output is correct
58 Correct 52 ms 25988 KB Output is correct
59 Correct 103 ms 48628 KB Output is correct
60 Correct 310 ms 81572 KB Output is correct
61 Correct 235 ms 47028 KB Output is correct
62 Correct 187 ms 43544 KB Output is correct
63 Correct 243 ms 43596 KB Output is correct
64 Correct 504 ms 98248 KB Output is correct
65 Correct 499 ms 96092 KB Output is correct
66 Correct 343 ms 77456 KB Output is correct
67 Correct 165 ms 37560 KB Output is correct
68 Correct 384 ms 60040 KB Output is correct
69 Correct 426 ms 65012 KB Output is correct
70 Correct 370 ms 58292 KB Output is correct