답안 #42431 :: oj.uz

#	제출 시각	아이디	문제	언어	결과	실행 시간	메모리
42431	2018-02-27T06:33:55 Z	comfile	경주 (Race) (IOI11_race)	C++11	43 / 100	3000 ms	33276 KB

race

#include <bits/stdc++.h>
#define mp make_pair
#define pb push_back
using namespace std;
const int MN = 200010;
int n,k,ans,sz[MN],dead[MN];
vector<pair<int,int> > g[MN];
void get_sz(int cur,int prev){
    sz[cur] = 1;
    for(auto &x : g[cur]) if(x.first!=prev && !dead[x.first]){
        get_sz(x.first,cur);
        sz[cur] += sz[x.first];
    }
}
int dfs(int cur,int prev,int tot){
    for(auto &x : g[cur]) if(x.first!=prev && !dead[x.first]){
        if(sz[x.first]>(tot/2)) return dfs(x.first,cur,tot);
    }
    return cur;
}
int one(int root){
    get_sz(root,-1);
    return dfs(root,-1,sz[root]);
}
void rec(int start){
    int c = one(start);
    dead[c] = 1;
    for(auto &x : g[c]) if(!dead[x.first]) rec(x.first);
    map<int,int> cnt;
    function<void (int,int,int,int,int)> add_cnt = [&](int cur,int prev,int d,int st,int add){
        if(d>k) return;
        cnt[d] = cnt[d]?min(cnt[d],st):st;
        for(auto &x : g[cur]) if(x.first!=prev && !dead[x.first]){
            add_cnt(x.first,cur,d+x.second,st+1,add);
        }
    };
    function<void (int,int,int,int)> calc = [&](int cur,int prev,int d,int st){
        if(d>k) return;
        if(k!=d && cnt[k-d]) ans = min(ans,st+cnt[k-d]);
        for(auto &x: g[cur]) if(x.first!=prev && !dead[x.first]){
            calc(x.first,cur,d+x.second,st+1);
        }
    };
    add_cnt(c,-1,0,0,1);
    if(cnt[k]) ans = min(ans,cnt[k]);
    cnt.clear();
    for(auto &x : g[c]) if(!dead[x.first]){
        calc(x.first,c,x.second,1);
        add_cnt(x.first,c,x.second,1,1);
    }
    dead[c] = 0;
}
int best_path(int _n,int _k,int h[][2],int l[]){
    ans = MN;
    n = _n; k = _k;
    for(int i=0;i<n-1;i++){
        int a = h[i][0];
        int b = h[i][1];
        int c = l[i];
        g[a].pb(mp(b,c));
        g[b].pb(mp(a,c));
    }
    rec(0);
    if(ans>=MN) ans = -1;
    return ans;
}

Subtask #1
9.0 / 9.0

#	결과	실행 시간	메모리	Grader output
1	Correct	6 ms	4984 KB	Output is correct
2	Correct	7 ms	5220 KB	Output is correct
3	Correct	7 ms	5220 KB	Output is correct
4	Correct	6 ms	5220 KB	Output is correct
5	Correct	7 ms	5220 KB	Output is correct
6	Correct	6 ms	5220 KB	Output is correct
7	Correct	7 ms	5220 KB	Output is correct
8	Correct	7 ms	5220 KB	Output is correct
9	Correct	8 ms	5220 KB	Output is correct
10	Correct	7 ms	5220 KB	Output is correct
11	Correct	6 ms	5220 KB	Output is correct
12	Correct	6 ms	5220 KB	Output is correct
13	Correct	8 ms	5252 KB	Output is correct
14	Correct	7 ms	5272 KB	Output is correct
15	Correct	7 ms	5272 KB	Output is correct
16	Correct	8 ms	5272 KB	Output is correct
17	Correct	5 ms	5272 KB	Output is correct
18	Correct	6 ms	5272 KB	Output is correct

Subtask #2
12.0 / 12.0

#	결과	실행 시간	메모리	Grader output
1	Correct	6 ms	4984 KB	Output is correct
2	Correct	7 ms	5220 KB	Output is correct
3	Correct	7 ms	5220 KB	Output is correct
4	Correct	6 ms	5220 KB	Output is correct
5	Correct	7 ms	5220 KB	Output is correct
6	Correct	6 ms	5220 KB	Output is correct
7	Correct	7 ms	5220 KB	Output is correct
8	Correct	7 ms	5220 KB	Output is correct
9	Correct	8 ms	5220 KB	Output is correct
10	Correct	7 ms	5220 KB	Output is correct
11	Correct	6 ms	5220 KB	Output is correct
12	Correct	6 ms	5220 KB	Output is correct
13	Correct	8 ms	5252 KB	Output is correct
14	Correct	7 ms	5272 KB	Output is correct
15	Correct	7 ms	5272 KB	Output is correct
16	Correct	8 ms	5272 KB	Output is correct
17	Correct	5 ms	5272 KB	Output is correct
18	Correct	6 ms	5272 KB	Output is correct
19	Correct	7 ms	5272 KB	Output is correct
20	Correct	6 ms	5328 KB	Output is correct
21	Correct	11 ms	5352 KB	Output is correct
22	Correct	8 ms	5480 KB	Output is correct
23	Correct	8 ms	5480 KB	Output is correct
24	Correct	10 ms	5480 KB	Output is correct
25	Correct	10 ms	5480 KB	Output is correct
26	Correct	7 ms	5480 KB	Output is correct
27	Correct	6 ms	5480 KB	Output is correct
28	Correct	9 ms	5480 KB	Output is correct
29	Correct	8 ms	5480 KB	Output is correct
30	Correct	9 ms	5480 KB	Output is correct
31	Correct	9 ms	5480 KB	Output is correct
32	Correct	9 ms	5480 KB	Output is correct
33	Correct	10 ms	5480 KB	Output is correct
34	Correct	8 ms	5480 KB	Output is correct
35	Correct	8 ms	5480 KB	Output is correct
36	Correct	8 ms	5480 KB	Output is correct
37	Correct	9 ms	5480 KB	Output is correct
38	Correct	10 ms	5480 KB	Output is correct

Subtask #3
22.0 / 22.0

#	결과	실행 시간	메모리	Grader output
1	Correct	6 ms	4984 KB	Output is correct
2	Correct	7 ms	5220 KB	Output is correct
3	Correct	7 ms	5220 KB	Output is correct
4	Correct	6 ms	5220 KB	Output is correct
5	Correct	7 ms	5220 KB	Output is correct
6	Correct	6 ms	5220 KB	Output is correct
7	Correct	7 ms	5220 KB	Output is correct
8	Correct	7 ms	5220 KB	Output is correct
9	Correct	8 ms	5220 KB	Output is correct
10	Correct	7 ms	5220 KB	Output is correct
11	Correct	6 ms	5220 KB	Output is correct
12	Correct	6 ms	5220 KB	Output is correct
13	Correct	8 ms	5252 KB	Output is correct
14	Correct	7 ms	5272 KB	Output is correct
15	Correct	7 ms	5272 KB	Output is correct
16	Correct	8 ms	5272 KB	Output is correct
17	Correct	5 ms	5272 KB	Output is correct
18	Correct	6 ms	5272 KB	Output is correct
19	Correct	500 ms	10968 KB	Output is correct
20	Correct	439 ms	10968 KB	Output is correct
21	Correct	462 ms	11004 KB	Output is correct
22	Correct	465 ms	11148 KB	Output is correct
23	Correct	215 ms	11260 KB	Output is correct
24	Correct	161 ms	11260 KB	Output is correct
25	Correct	318 ms	12804 KB	Output is correct
26	Correct	251 ms	16636 KB	Output is correct
27	Correct	473 ms	16724 KB	Output is correct
28	Correct	614 ms	24856 KB	Output is correct
29	Correct	467 ms	24856 KB	Output is correct
30	Correct	458 ms	24856 KB	Output is correct
31	Correct	489 ms	24856 KB	Output is correct
32	Correct	451 ms	24856 KB	Output is correct
33	Correct	860 ms	24856 KB	Output is correct
34	Correct	414 ms	24856 KB	Output is correct

Subtask #4
0 / 57.0

#	결과	실행 시간	메모리	Grader output
1	Correct	6 ms	4984 KB	Output is correct
2	Correct	7 ms	5220 KB	Output is correct
3	Correct	7 ms	5220 KB	Output is correct
4	Correct	6 ms	5220 KB	Output is correct
5	Correct	7 ms	5220 KB	Output is correct
6	Correct	6 ms	5220 KB	Output is correct
7	Correct	7 ms	5220 KB	Output is correct
8	Correct	7 ms	5220 KB	Output is correct
9	Correct	8 ms	5220 KB	Output is correct
10	Correct	7 ms	5220 KB	Output is correct
11	Correct	6 ms	5220 KB	Output is correct
12	Correct	6 ms	5220 KB	Output is correct
13	Correct	8 ms	5252 KB	Output is correct
14	Correct	7 ms	5272 KB	Output is correct
15	Correct	7 ms	5272 KB	Output is correct
16	Correct	8 ms	5272 KB	Output is correct
17	Correct	5 ms	5272 KB	Output is correct
18	Correct	6 ms	5272 KB	Output is correct
19	Correct	7 ms	5272 KB	Output is correct
20	Correct	6 ms	5328 KB	Output is correct
21	Correct	11 ms	5352 KB	Output is correct
22	Correct	8 ms	5480 KB	Output is correct
23	Correct	8 ms	5480 KB	Output is correct
24	Correct	10 ms	5480 KB	Output is correct
25	Correct	10 ms	5480 KB	Output is correct
26	Correct	7 ms	5480 KB	Output is correct
27	Correct	6 ms	5480 KB	Output is correct
28	Correct	9 ms	5480 KB	Output is correct
29	Correct	8 ms	5480 KB	Output is correct
30	Correct	9 ms	5480 KB	Output is correct
31	Correct	9 ms	5480 KB	Output is correct
32	Correct	9 ms	5480 KB	Output is correct
33	Correct	10 ms	5480 KB	Output is correct
34	Correct	8 ms	5480 KB	Output is correct
35	Correct	8 ms	5480 KB	Output is correct
36	Correct	8 ms	5480 KB	Output is correct
37	Correct	9 ms	5480 KB	Output is correct
38	Correct	10 ms	5480 KB	Output is correct
39	Correct	500 ms	10968 KB	Output is correct
40	Correct	439 ms	10968 KB	Output is correct
41	Correct	462 ms	11004 KB	Output is correct
42	Correct	465 ms	11148 KB	Output is correct
43	Correct	215 ms	11260 KB	Output is correct
44	Correct	161 ms	11260 KB	Output is correct
45	Correct	318 ms	12804 KB	Output is correct
46	Correct	251 ms	16636 KB	Output is correct
47	Correct	473 ms	16724 KB	Output is correct
48	Correct	614 ms	24856 KB	Output is correct
49	Correct	467 ms	24856 KB	Output is correct
50	Correct	458 ms	24856 KB	Output is correct
51	Correct	489 ms	24856 KB	Output is correct
52	Correct	451 ms	24856 KB	Output is correct
53	Correct	860 ms	24856 KB	Output is correct
54	Correct	414 ms	24856 KB	Output is correct
55	Correct	56 ms	24856 KB	Output is correct
56	Correct	44 ms	24856 KB	Output is correct
57	Correct	432 ms	24856 KB	Output is correct
58	Correct	95 ms	24856 KB	Output is correct
59	Correct	1025 ms	24856 KB	Output is correct
60	Execution timed out	3051 ms	33276 KB	Time limit exceeded
61	Halted	0 ms	0 KB	-

답안 #42431

Compilation message

Subtask #1 9.0 / 9.0

Subtask #2 12.0 / 12.0

Subtask #3 22.0 / 22.0

Subtask #4 0 / 57.0

Subtask #1
9.0 / 9.0

Subtask #2
12.0 / 12.0

Subtask #3
22.0 / 22.0

Subtask #4
0 / 57.0