oj.uz

답안 #307469

# 제출 시각 아이디 문제 언어 결과 실행 시간 메모리
307469 2020-09-28T08:23:51 Z juggernaut 경주 (Race) (IOI11_race) C++14
100 / 100
 624 ms 29560 KB 
#include"race.h"
#include<bits/stdc++.h>
#define fr first
#define sc second
using namespace std;
int k,inf=2e9,ans=inf,t,res[1000005],mt[1000005],a[200005];
bool vis[200005];
vector<pair<int,int>>g[200005];
void app(int v,int p,int len,int depth){
    if(k>len&&mt[k-len]==t)ans=min(ans,depth+res[k-len]);
    else if(k==len)ans=min(ans,depth);
    if(len>k)return;
    for(auto to:g[v])
        if(to.fr!=p&&!vis[to.fr])app(to.fr,v,len+to.sc,depth+1);
}
void update(int v,int p,int len,int depth){
    if(k>len&&mt[len]!=t){
        mt[len]=t;
        res[len]=depth;
    }else if(k>len)res[len]=min(depth,res[len]);
    else return;
    for(auto to:g[v])
        if(to.fr!=p&&!vis[to.fr])update(to.fr,v,len+to.sc,depth+1);
}
int dfs(int v,int p){
    a[v]=1;
    for(auto to:g[v])
        if(to.fr!=p&&!vis[to.fr])
            a[v]+=dfs(to.fr,v);
    return a[v];
}
int centroid(int c){
    dfs(c,c);
    bool flag=true;
    int v=c,p=v;
    while(flag){
        flag=false;
        for(auto to:g[v]){
            if(to.fr!=p&&!vis[to.fr]&&(a[to.fr]<<1)>=a[c]){
                p=v;
                v=to.fr;
                flag=true;
                break;
            }
        }
    }
    return v;
}
void go(int v){
    v=centroid(v);
    vis[v]=1;
    t++;
    for(auto to:g[v])
        if(!vis[to.fr]){
            app(to.fr,v,to.sc,1);
            update(to.fr,v,to.sc,1);
        }
    for(auto to:g[v])
        if(!vis[to.fr])go(to.fr);
}
int best_path(int N,int K,int H[][2],int L[]){
    k=K;
    for(int i=0;i+1<N;i++){
        g[H[i][0]].push_back({H[i][1],L[i]});
        g[H[i][1]].push_back({H[i][0],L[i]});
    }
    go(0);
    if(ans==inf)return -1;
    return ans;
}

Subtask #1
9.0 / 9.0

# 결과 실행 시간 메모리 Grader output
1 Correct 4 ms 4992 KB Output is correct
2 Correct 4 ms 4992 KB Output is correct
3 Correct 4 ms 5120 KB Output is correct
4 Correct 4 ms 4992 KB Output is correct
5 Correct 4 ms 4992 KB Output is correct
6 Correct 4 ms 5044 KB Output is correct
7 Correct 4 ms 4992 KB Output is correct
8 Correct 3 ms 4992 KB Output is correct
9 Correct 4 ms 4992 KB Output is correct
10 Correct 4 ms 5120 KB Output is correct
11 Correct 4 ms 5120 KB Output is correct
12 Correct 4 ms 4992 KB Output is correct
13 Correct 4 ms 4992 KB Output is correct
14 Correct 4 ms 4992 KB Output is correct
15 Correct 4 ms 5120 KB Output is correct
16 Correct 4 ms 4992 KB Output is correct
17 Correct 4 ms 4992 KB Output is correct
18 Correct 4 ms 5248 KB Output is correct

Subtask #2
12.0 / 12.0

# 결과 실행 시간 메모리 Grader output
1 Correct 4 ms 4992 KB Output is correct
2 Correct 4 ms 4992 KB Output is correct
3 Correct 4 ms 5120 KB Output is correct
4 Correct 4 ms 4992 KB Output is correct
5 Correct 4 ms 4992 KB Output is correct
6 Correct 4 ms 5044 KB Output is correct
7 Correct 4 ms 4992 KB Output is correct
8 Correct 3 ms 4992 KB Output is correct
9 Correct 4 ms 4992 KB Output is correct
10 Correct 4 ms 5120 KB Output is correct
11 Correct 4 ms 5120 KB Output is correct
12 Correct 4 ms 4992 KB Output is correct
13 Correct 4 ms 4992 KB Output is correct
14 Correct 4 ms 4992 KB Output is correct
15 Correct 4 ms 5120 KB Output is correct
16 Correct 4 ms 4992 KB Output is correct
17 Correct 4 ms 4992 KB Output is correct
18 Correct 4 ms 5248 KB Output is correct
19 Correct 3 ms 4992 KB Output is correct
20 Correct 4 ms 5120 KB Output is correct
21 Correct 5 ms 5120 KB Output is correct
22 Correct 8 ms 10112 KB Output is correct
23 Correct 9 ms 9344 KB Output is correct
24 Correct 8 ms 10880 KB Output is correct
25 Correct 7 ms 8576 KB Output is correct
26 Correct 6 ms 7680 KB Output is correct
27 Correct 4 ms 5120 KB Output is correct
28 Correct 5 ms 6656 KB Output is correct
29 Correct 6 ms 7680 KB Output is correct
30 Correct 6 ms 7936 KB Output is correct
31 Correct 7 ms 8704 KB Output is correct
32 Correct 7 ms 8832 KB Output is correct
33 Correct 8 ms 10368 KB Output is correct
34 Correct 8 ms 9600 KB Output is correct
35 Correct 9 ms 11136 KB Output is correct
36 Correct 9 ms 11520 KB Output is correct
37 Correct 7 ms 8960 KB Output is correct
38 Correct 7 ms 7424 KB Output is correct

Subtask #3
22.0 / 22.0

# 결과 실행 시간 메모리 Grader output
1 Correct 4 ms 4992 KB Output is correct
2 Correct 4 ms 4992 KB Output is correct
3 Correct 4 ms 5120 KB Output is correct
4 Correct 4 ms 4992 KB Output is correct
5 Correct 4 ms 4992 KB Output is correct
6 Correct 4 ms 5044 KB Output is correct
7 Correct 4 ms 4992 KB Output is correct
8 Correct 3 ms 4992 KB Output is correct
9 Correct 4 ms 4992 KB Output is correct
10 Correct 4 ms 5120 KB Output is correct
11 Correct 4 ms 5120 KB Output is correct
12 Correct 4 ms 4992 KB Output is correct
13 Correct 4 ms 4992 KB Output is correct
14 Correct 4 ms 4992 KB Output is correct
15 Correct 4 ms 5120 KB Output is correct
16 Correct 4 ms 4992 KB Output is correct
17 Correct 4 ms 4992 KB Output is correct
18 Correct 4 ms 5248 KB Output is correct
19 Correct 163 ms 10596 KB Output is correct
20 Correct 154 ms 10360 KB Output is correct
21 Correct 170 ms 10360 KB Output is correct
22 Correct 183 ms 10488 KB Output is correct
23 Correct 104 ms 10616 KB Output is correct
24 Correct 76 ms 10616 KB Output is correct
25 Correct 135 ms 12280 KB Output is correct
26 Correct 94 ms 14584 KB Output is correct
27 Correct 226 ms 15992 KB Output is correct
28 Correct 326 ms 23928 KB Output is correct
29 Correct 324 ms 23352 KB Output is correct
30 Correct 208 ms 15864 KB Output is correct
31 Correct 208 ms 15864 KB Output is correct
32 Correct 265 ms 15992 KB Output is correct
33 Correct 263 ms 14712 KB Output is correct
34 Correct 242 ms 14712 KB Output is correct

Subtask #4
57.0 / 57.0

# 결과 실행 시간 메모리 Grader output
1 Correct 4 ms 4992 KB Output is correct
2 Correct 4 ms 4992 KB Output is correct
3 Correct 4 ms 5120 KB Output is correct
4 Correct 4 ms 4992 KB Output is correct
5 Correct 4 ms 4992 KB Output is correct
6 Correct 4 ms 5044 KB Output is correct
7 Correct 4 ms 4992 KB Output is correct
8 Correct 3 ms 4992 KB Output is correct
9 Correct 4 ms 4992 KB Output is correct
10 Correct 4 ms 5120 KB Output is correct
11 Correct 4 ms 5120 KB Output is correct
12 Correct 4 ms 4992 KB Output is correct
13 Correct 4 ms 4992 KB Output is correct
14 Correct 4 ms 4992 KB Output is correct
15 Correct 4 ms 5120 KB Output is correct
16 Correct 4 ms 4992 KB Output is correct
17 Correct 4 ms 4992 KB Output is correct
18 Correct 4 ms 5248 KB Output is correct
19 Correct 3 ms 4992 KB Output is correct
20 Correct 4 ms 5120 KB Output is correct
21 Correct 5 ms 5120 KB Output is correct
22 Correct 8 ms 10112 KB Output is correct
23 Correct 9 ms 9344 KB Output is correct
24 Correct 8 ms 10880 KB Output is correct
25 Correct 7 ms 8576 KB Output is correct
26 Correct 6 ms 7680 KB Output is correct
27 Correct 4 ms 5120 KB Output is correct
28 Correct 5 ms 6656 KB Output is correct
29 Correct 6 ms 7680 KB Output is correct
30 Correct 6 ms 7936 KB Output is correct
31 Correct 7 ms 8704 KB Output is correct
32 Correct 7 ms 8832 KB Output is correct
33 Correct 8 ms 10368 KB Output is correct
34 Correct 8 ms 9600 KB Output is correct
35 Correct 9 ms 11136 KB Output is correct
36 Correct 9 ms 11520 KB Output is correct
37 Correct 7 ms 8960 KB Output is correct
38 Correct 7 ms 7424 KB Output is correct
39 Correct 163 ms 10596 KB Output is correct
40 Correct 154 ms 10360 KB Output is correct
41 Correct 170 ms 10360 KB Output is correct
42 Correct 183 ms 10488 KB Output is correct
43 Correct 104 ms 10616 KB Output is correct
44 Correct 76 ms 10616 KB Output is correct
45 Correct 135 ms 12280 KB Output is correct
46 Correct 94 ms 14584 KB Output is correct
47 Correct 226 ms 15992 KB Output is correct
48 Correct 326 ms 23928 KB Output is correct
49 Correct 324 ms 23352 KB Output is correct
50 Correct 208 ms 15864 KB Output is correct
51 Correct 208 ms 15864 KB Output is correct
52 Correct 265 ms 15992 KB Output is correct
53 Correct 263 ms 14712 KB Output is correct
54 Correct 242 ms 14712 KB Output is correct
55 Correct 13 ms 5632 KB Output is correct
56 Correct 14 ms 5632 KB Output is correct
57 Correct 90 ms 10616 KB Output is correct
58 Correct 46 ms 10604 KB Output is correct
59 Correct 103 ms 15352 KB Output is correct
60 Correct 534 ms 28408 KB Output is correct
61 Correct 234 ms 15864 KB Output is correct
62 Correct 247 ms 15864 KB Output is correct
63 Correct 331 ms 15992 KB Output is correct
64 Correct 624 ms 18040 KB Output is correct
65 Correct 296 ms 15864 KB Output is correct
66 Correct 480 ms 29560 KB Output is correct
67 Correct 150 ms 16228 KB Output is correct
68 Correct 325 ms 21372 KB Output is correct
69 Correct 335 ms 21668 KB Output is correct
70 Correct 315 ms 20856 KB Output is correct