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답안 #700209

# 제출 시각 아이디 문제 언어 결과 실행 시간 메모리
700209 2023-02-18T20:45:29 Z mnbvcxz123 경주 (Race) (IOI11_race) C++17
100 / 100
 928 ms 41960 KB 
#include<bits/stdc++.h>
using namespace std;
using ll=long long;
using ar=array<ll,2>;
ll n,k,res=1e7;
vector<ar>g[200000];
ll sz[200000];
bool used[200000];
map<ll,ll>mp;
void siz(ll v, ll e){
        sz[v]=1;
        for(const auto&[i,w]:g[v])
                if(i!=e and !used[i]) siz(i,v),sz[v]+=sz[i];
}
ll get(ll v, ll e, ll des){
        for(const auto&[i,w]:g[v])
                if(i!=e and !used[i] and sz[i]>des) return get(i,v,des);
        return v;
}
void help(ll v, ll e, ll km, ll d, bool fill){
        if(km>k) return;
        if(fill){
                if(!mp.count(km)) mp[km]=d;
                else mp[km]=min(mp[km],d);
        }
        else{
                if(km==k) res=min(res,d);
                else if(mp.count(k-km)) res=min(res,d+mp[k-km]);
        }
        for(const auto&[i,w]:g[v])
                if(i!=e and !used[i]) help(i,v,km+w,d+1,fill);
}
void decomp(ll v=0){
        siz(v,-1);
        ll c=get(v,-1,sz[v]>>1);
        used[c]=1;
        for(const auto&[i,w]:g[c])
                if(!used[i]){
                        help(i,c,w,1,0);
                        help(i,c,w,1,1);
                }
        mp.clear();
        for(const auto&[i,w]:g[c])
                if(!used[i]) decomp(i);
}
int best_path(int N, int K, int H[][2],int L[]){
        n=N;
        k=K;
        for(ll i=0;i<n-1;++i){
                g[H[i][0]].push_back({H[i][1],L[i]});
                g[H[i][1]].push_back({H[i][0],L[i]});
        }
        decomp();
        if(res==1e7) res=-1;
        return res;
}

Subtask #1
9.0 / 9.0

# 결과 실행 시간 메모리 Grader output
1 Correct 3 ms 4948 KB Output is correct
2 Correct 4 ms 4948 KB Output is correct
3 Correct 2 ms 4948 KB Output is correct
4 Correct 2 ms 4948 KB Output is correct
5 Correct 3 ms 4948 KB Output is correct
6 Correct 2 ms 4948 KB Output is correct
7 Correct 2 ms 4936 KB Output is correct
8 Correct 3 ms 4948 KB Output is correct
9 Correct 3 ms 4948 KB Output is correct
10 Correct 2 ms 4948 KB Output is correct
11 Correct 3 ms 4948 KB Output is correct
12 Correct 4 ms 4948 KB Output is correct
13 Correct 3 ms 4948 KB Output is correct
14 Correct 3 ms 4948 KB Output is correct
15 Correct 3 ms 5032 KB Output is correct
16 Correct 2 ms 4948 KB Output is correct
17 Correct 3 ms 4948 KB Output is correct
18 Correct 3 ms 4948 KB Output is correct

Subtask #2
12.0 / 12.0

# 결과 실행 시간 메모리 Grader output
1 Correct 3 ms 4948 KB Output is correct
2 Correct 4 ms 4948 KB Output is correct
3 Correct 2 ms 4948 KB Output is correct
4 Correct 2 ms 4948 KB Output is correct
5 Correct 3 ms 4948 KB Output is correct
6 Correct 2 ms 4948 KB Output is correct
7 Correct 2 ms 4936 KB Output is correct
8 Correct 3 ms 4948 KB Output is correct
9 Correct 3 ms 4948 KB Output is correct
10 Correct 2 ms 4948 KB Output is correct
11 Correct 3 ms 4948 KB Output is correct
12 Correct 4 ms 4948 KB Output is correct
13 Correct 3 ms 4948 KB Output is correct
14 Correct 3 ms 4948 KB Output is correct
15 Correct 3 ms 5032 KB Output is correct
16 Correct 2 ms 4948 KB Output is correct
17 Correct 3 ms 4948 KB Output is correct
18 Correct 3 ms 4948 KB Output is correct
19 Correct 2 ms 4948 KB Output is correct
20 Correct 3 ms 4948 KB Output is correct
21 Correct 4 ms 5076 KB Output is correct
22 Correct 3 ms 5092 KB Output is correct
23 Correct 3 ms 5076 KB Output is correct
24 Correct 3 ms 5076 KB Output is correct
25 Correct 4 ms 5076 KB Output is correct
26 Correct 3 ms 5076 KB Output is correct
27 Correct 3 ms 5076 KB Output is correct
28 Correct 4 ms 5076 KB Output is correct
29 Correct 4 ms 5148 KB Output is correct
30 Correct 4 ms 5076 KB Output is correct
31 Correct 4 ms 5076 KB Output is correct
32 Correct 4 ms 5076 KB Output is correct
33 Correct 4 ms 5152 KB Output is correct
34 Correct 3 ms 5076 KB Output is correct
35 Correct 3 ms 5076 KB Output is correct
36 Correct 3 ms 5076 KB Output is correct
37 Correct 3 ms 5076 KB Output is correct
38 Correct 4 ms 5076 KB Output is correct

Subtask #3
22.0 / 22.0

# 결과 실행 시간 메모리 Grader output
1 Correct 3 ms 4948 KB Output is correct
2 Correct 4 ms 4948 KB Output is correct
3 Correct 2 ms 4948 KB Output is correct
4 Correct 2 ms 4948 KB Output is correct
5 Correct 3 ms 4948 KB Output is correct
6 Correct 2 ms 4948 KB Output is correct
7 Correct 2 ms 4936 KB Output is correct
8 Correct 3 ms 4948 KB Output is correct
9 Correct 3 ms 4948 KB Output is correct
10 Correct 2 ms 4948 KB Output is correct
11 Correct 3 ms 4948 KB Output is correct
12 Correct 4 ms 4948 KB Output is correct
13 Correct 3 ms 4948 KB Output is correct
14 Correct 3 ms 4948 KB Output is correct
15 Correct 3 ms 5032 KB Output is correct
16 Correct 2 ms 4948 KB Output is correct
17 Correct 3 ms 4948 KB Output is correct
18 Correct 3 ms 4948 KB Output is correct
19 Correct 185 ms 12156 KB Output is correct
20 Correct 182 ms 12160 KB Output is correct
21 Correct 192 ms 12080 KB Output is correct
22 Correct 184 ms 12184 KB Output is correct
23 Correct 78 ms 12560 KB Output is correct
24 Correct 66 ms 11704 KB Output is correct
25 Correct 126 ms 15052 KB Output is correct
26 Correct 92 ms 17888 KB Output is correct
27 Correct 176 ms 19708 KB Output is correct
28 Correct 242 ms 31136 KB Output is correct
29 Correct 240 ms 30024 KB Output is correct
30 Correct 176 ms 19756 KB Output is correct
31 Correct 186 ms 19832 KB Output is correct
32 Correct 199 ms 19788 KB Output is correct
33 Correct 248 ms 18528 KB Output is correct
34 Correct 167 ms 18764 KB Output is correct

Subtask #4
57.0 / 57.0

# 결과 실행 시간 메모리 Grader output
1 Correct 3 ms 4948 KB Output is correct
2 Correct 4 ms 4948 KB Output is correct
3 Correct 2 ms 4948 KB Output is correct
4 Correct 2 ms 4948 KB Output is correct
5 Correct 3 ms 4948 KB Output is correct
6 Correct 2 ms 4948 KB Output is correct
7 Correct 2 ms 4936 KB Output is correct
8 Correct 3 ms 4948 KB Output is correct
9 Correct 3 ms 4948 KB Output is correct
10 Correct 2 ms 4948 KB Output is correct
11 Correct 3 ms 4948 KB Output is correct
12 Correct 4 ms 4948 KB Output is correct
13 Correct 3 ms 4948 KB Output is correct
14 Correct 3 ms 4948 KB Output is correct
15 Correct 3 ms 5032 KB Output is correct
16 Correct 2 ms 4948 KB Output is correct
17 Correct 3 ms 4948 KB Output is correct
18 Correct 3 ms 4948 KB Output is correct
19 Correct 2 ms 4948 KB Output is correct
20 Correct 3 ms 4948 KB Output is correct
21 Correct 4 ms 5076 KB Output is correct
22 Correct 3 ms 5092 KB Output is correct
23 Correct 3 ms 5076 KB Output is correct
24 Correct 3 ms 5076 KB Output is correct
25 Correct 4 ms 5076 KB Output is correct
26 Correct 3 ms 5076 KB Output is correct
27 Correct 3 ms 5076 KB Output is correct
28 Correct 4 ms 5076 KB Output is correct
29 Correct 4 ms 5148 KB Output is correct
30 Correct 4 ms 5076 KB Output is correct
31 Correct 4 ms 5076 KB Output is correct
32 Correct 4 ms 5076 KB Output is correct
33 Correct 4 ms 5152 KB Output is correct
34 Correct 3 ms 5076 KB Output is correct
35 Correct 3 ms 5076 KB Output is correct
36 Correct 3 ms 5076 KB Output is correct
37 Correct 3 ms 5076 KB Output is correct
38 Correct 4 ms 5076 KB Output is correct
39 Correct 185 ms 12156 KB Output is correct
40 Correct 182 ms 12160 KB Output is correct
41 Correct 192 ms 12080 KB Output is correct
42 Correct 184 ms 12184 KB Output is correct
43 Correct 78 ms 12560 KB Output is correct
44 Correct 66 ms 11704 KB Output is correct
45 Correct 126 ms 15052 KB Output is correct
46 Correct 92 ms 17888 KB Output is correct
47 Correct 176 ms 19708 KB Output is correct
48 Correct 242 ms 31136 KB Output is correct
49 Correct 240 ms 30024 KB Output is correct
50 Correct 176 ms 19756 KB Output is correct
51 Correct 186 ms 19832 KB Output is correct
52 Correct 199 ms 19788 KB Output is correct
53 Correct 248 ms 18528 KB Output is correct
54 Correct 167 ms 18764 KB Output is correct
55 Correct 19 ms 5904 KB Output is correct
56 Correct 14 ms 5740 KB Output is correct
57 Correct 129 ms 12456 KB Output is correct
58 Correct 40 ms 11692 KB Output is correct
59 Correct 266 ms 22744 KB Output is correct
60 Correct 799 ms 41960 KB Output is correct
61 Correct 238 ms 20236 KB Output is correct
62 Correct 258 ms 20060 KB Output is correct
63 Correct 320 ms 20024 KB Output is correct
64 Correct 928 ms 25464 KB Output is correct
65 Correct 203 ms 19388 KB Output is correct
66 Correct 498 ms 28196 KB Output is correct
67 Correct 117 ms 18536 KB Output is correct
68 Correct 356 ms 24148 KB Output is correct
69 Correct 347 ms 23676 KB Output is correct
70 Correct 334 ms 23252 KB Output is correct