oj.uz

Submission #393385

# Submission time Handle Problem Language Result Execution time Memory
393385 2021-04-23T10:54:19 Z juggernaut Race (IOI11_race) C++14
100 / 100
 524 ms 36220 KB 
#include"race.h"
#include<bits/stdc++.h>
#ifdef IOI2021SG
#include"grader.cpp"
#endif
using namespace std;
#define fr first
#define sc second
vector<pair<int,int>>g[200005];
const int INF=2e9;
int k,ans=INF;
int sz[200005];
bool vis[200005];
pair<int,int>mt[1000005];
int timer;
void calc_sz(int v,int p){
    sz[v]=1;
    for(auto to:g[v])if(to.fr!=p&&!vis[to.fr]){
        calc_sz(to.fr,v);
        sz[v]+=sz[to.fr];
    }
}
int centroid(int v,int p,int num){
    for(auto to:g[v])if(to.fr!=p&&!vis[to.fr])
        if(sz[to.fr]>num)return centroid(to.fr,v,num);
    return v;
}
void go(int v,int p,int depth,int weight){
    if(weight>k)return;
    if(mt[k-weight].fr==timer)
        ans=min(ans,depth+mt[k-weight].sc);
    for(auto to:g[v])if(to.fr!=p&&!vis[to.fr])go(to.fr,v,depth+1,weight+to.sc);
}
void update(int v,int p,int depth,int weight){
    if(weight>k)return;
    if(mt[weight].fr==timer)mt[weight].sc=min(mt[weight].sc,depth);
    else mt[weight]={timer,depth};
    for(auto to:g[v])if(to.fr!=p&&!vis[to.fr])update(to.fr,v,depth+1,weight+to.sc);
}
void decompose(int v){
    calc_sz(v,v);
    v=centroid(v,v,sz[v]>>1);
    timer++;
    mt[0]={timer,0};
    for(auto to:g[v]){
      if(vis[to.fr])continue;
        go(to.fr,v,1,to.sc);
        update(to.fr,v,1,to.sc);
    }
    vis[v]=true;
    for(auto to:g[v])if(!vis[to.fr])decompose(to.fr);
}
int best_path(int n,int K,int h[][2],int l[]){
    k=K;
    for(int i=1;i^n;i++){
        g[h[i-1][1]].push_back({h[i-1][0],l[i-1]});
        g[h[i-1][0]].push_back({h[i-1][1],l[i-1]});
    }
    decompose(0);
    if(ans==INF)return -1;
    return ans;
}
/*
3 3
0 1 1
1 2 1
-1
 
 
 
 
4 3
0 1 1
1 2 2
1 3 4
2
 
 
11 12
0 1 3
0 2 4
2 3 5
3 4 4
4 5 6
0 6 3
6 7 2
6 8 5
8 9 6
8 10 7
2
 
 
*/

Subtask #1
9.0 / 9.0

# Verdict Execution time Memory Grader output
1 Correct 3 ms 4940 KB Output is correct
2 Correct 3 ms 4940 KB Output is correct
3 Correct 3 ms 4940 KB Output is correct
4 Correct 3 ms 4940 KB Output is correct
5 Correct 3 ms 4940 KB Output is correct
6 Correct 3 ms 4940 KB Output is correct
7 Correct 3 ms 4940 KB Output is correct
8 Correct 3 ms 4940 KB Output is correct
9 Correct 4 ms 4940 KB Output is correct
10 Correct 3 ms 4940 KB Output is correct
11 Correct 3 ms 4940 KB Output is correct
12 Correct 4 ms 5032 KB Output is correct
13 Correct 4 ms 4940 KB Output is correct
14 Correct 4 ms 4940 KB Output is correct
15 Correct 3 ms 4992 KB Output is correct
16 Correct 3 ms 5028 KB Output is correct
17 Correct 3 ms 4940 KB Output is correct
18 Correct 3 ms 4940 KB Output is correct

Subtask #2
12.0 / 12.0

# Verdict Execution time Memory Grader output
1 Correct 3 ms 4940 KB Output is correct
2 Correct 3 ms 4940 KB Output is correct
3 Correct 3 ms 4940 KB Output is correct
4 Correct 3 ms 4940 KB Output is correct
5 Correct 3 ms 4940 KB Output is correct
6 Correct 3 ms 4940 KB Output is correct
7 Correct 3 ms 4940 KB Output is correct
8 Correct 3 ms 4940 KB Output is correct
9 Correct 4 ms 4940 KB Output is correct
10 Correct 3 ms 4940 KB Output is correct
11 Correct 3 ms 4940 KB Output is correct
12 Correct 4 ms 5032 KB Output is correct
13 Correct 4 ms 4940 KB Output is correct
14 Correct 4 ms 4940 KB Output is correct
15 Correct 3 ms 4992 KB Output is correct
16 Correct 3 ms 5028 KB Output is correct
17 Correct 3 ms 4940 KB Output is correct
18 Correct 3 ms 4940 KB Output is correct
19 Correct 3 ms 4940 KB Output is correct
20 Correct 3 ms 4940 KB Output is correct
21 Correct 4 ms 5068 KB Output is correct
22 Correct 7 ms 8396 KB Output is correct
23 Correct 6 ms 7884 KB Output is correct
24 Correct 7 ms 9164 KB Output is correct
25 Correct 7 ms 8140 KB Output is correct
26 Correct 5 ms 7372 KB Output is correct
27 Correct 4 ms 5068 KB Output is correct
28 Correct 5 ms 6604 KB Output is correct
29 Correct 6 ms 7508 KB Output is correct
30 Correct 6 ms 7756 KB Output is correct
31 Correct 7 ms 8396 KB Output is correct
32 Correct 7 ms 8396 KB Output is correct
33 Correct 8 ms 9804 KB Output is correct
34 Correct 7 ms 9036 KB Output is correct
35 Correct 8 ms 9936 KB Output is correct
36 Correct 8 ms 10444 KB Output is correct
37 Correct 7 ms 8268 KB Output is correct
38 Correct 6 ms 7252 KB Output is correct

Subtask #3
22.0 / 22.0

# Verdict Execution time Memory Grader output
1 Correct 3 ms 4940 KB Output is correct
2 Correct 3 ms 4940 KB Output is correct
3 Correct 3 ms 4940 KB Output is correct
4 Correct 3 ms 4940 KB Output is correct
5 Correct 3 ms 4940 KB Output is correct
6 Correct 3 ms 4940 KB Output is correct
7 Correct 3 ms 4940 KB Output is correct
8 Correct 3 ms 4940 KB Output is correct
9 Correct 4 ms 4940 KB Output is correct
10 Correct 3 ms 4940 KB Output is correct
11 Correct 3 ms 4940 KB Output is correct
12 Correct 4 ms 5032 KB Output is correct
13 Correct 4 ms 4940 KB Output is correct
14 Correct 4 ms 4940 KB Output is correct
15 Correct 3 ms 4992 KB Output is correct
16 Correct 3 ms 5028 KB Output is correct
17 Correct 3 ms 4940 KB Output is correct
18 Correct 3 ms 4940 KB Output is correct
19 Correct 141 ms 10288 KB Output is correct
20 Correct 132 ms 10240 KB Output is correct
21 Correct 149 ms 10256 KB Output is correct
22 Correct 139 ms 10384 KB Output is correct
23 Correct 78 ms 10580 KB Output is correct
24 Correct 61 ms 10436 KB Output is correct
25 Correct 127 ms 13912 KB Output is correct
26 Correct 96 ms 17696 KB Output is correct
27 Correct 181 ms 15884 KB Output is correct
28 Correct 306 ms 30148 KB Output is correct
29 Correct 282 ms 28992 KB Output is correct
30 Correct 181 ms 15876 KB Output is correct
31 Correct 194 ms 15812 KB Output is correct
32 Correct 231 ms 15956 KB Output is correct
33 Correct 218 ms 14784 KB Output is correct
34 Correct 198 ms 14744 KB Output is correct

Subtask #4
57.0 / 57.0

# Verdict Execution time Memory Grader output
1 Correct 3 ms 4940 KB Output is correct
2 Correct 3 ms 4940 KB Output is correct
3 Correct 3 ms 4940 KB Output is correct
4 Correct 3 ms 4940 KB Output is correct
5 Correct 3 ms 4940 KB Output is correct
6 Correct 3 ms 4940 KB Output is correct
7 Correct 3 ms 4940 KB Output is correct
8 Correct 3 ms 4940 KB Output is correct
9 Correct 4 ms 4940 KB Output is correct
10 Correct 3 ms 4940 KB Output is correct
11 Correct 3 ms 4940 KB Output is correct
12 Correct 4 ms 5032 KB Output is correct
13 Correct 4 ms 4940 KB Output is correct
14 Correct 4 ms 4940 KB Output is correct
15 Correct 3 ms 4992 KB Output is correct
16 Correct 3 ms 5028 KB Output is correct
17 Correct 3 ms 4940 KB Output is correct
18 Correct 3 ms 4940 KB Output is correct
19 Correct 3 ms 4940 KB Output is correct
20 Correct 3 ms 4940 KB Output is correct
21 Correct 4 ms 5068 KB Output is correct
22 Correct 7 ms 8396 KB Output is correct
23 Correct 6 ms 7884 KB Output is correct
24 Correct 7 ms 9164 KB Output is correct
25 Correct 7 ms 8140 KB Output is correct
26 Correct 5 ms 7372 KB Output is correct
27 Correct 4 ms 5068 KB Output is correct
28 Correct 5 ms 6604 KB Output is correct
29 Correct 6 ms 7508 KB Output is correct
30 Correct 6 ms 7756 KB Output is correct
31 Correct 7 ms 8396 KB Output is correct
32 Correct 7 ms 8396 KB Output is correct
33 Correct 8 ms 9804 KB Output is correct
34 Correct 7 ms 9036 KB Output is correct
35 Correct 8 ms 9936 KB Output is correct
36 Correct 8 ms 10444 KB Output is correct
37 Correct 7 ms 8268 KB Output is correct
38 Correct 6 ms 7252 KB Output is correct
39 Correct 141 ms 10288 KB Output is correct
40 Correct 132 ms 10240 KB Output is correct
41 Correct 149 ms 10256 KB Output is correct
42 Correct 139 ms 10384 KB Output is correct
43 Correct 78 ms 10580 KB Output is correct
44 Correct 61 ms 10436 KB Output is correct
45 Correct 127 ms 13912 KB Output is correct
46 Correct 96 ms 17696 KB Output is correct
47 Correct 181 ms 15884 KB Output is correct
48 Correct 306 ms 30148 KB Output is correct
49 Correct 282 ms 28992 KB Output is correct
50 Correct 181 ms 15876 KB Output is correct
51 Correct 194 ms 15812 KB Output is correct
52 Correct 231 ms 15956 KB Output is correct
53 Correct 218 ms 14784 KB Output is correct
54 Correct 198 ms 14744 KB Output is correct
55 Correct 12 ms 5556 KB Output is correct
56 Correct 13 ms 5568 KB Output is correct
57 Correct 82 ms 10560 KB Output is correct
58 Correct 41 ms 10492 KB Output is correct
59 Correct 98 ms 19724 KB Output is correct
60 Correct 464 ms 36212 KB Output is correct
61 Correct 197 ms 17860 KB Output is correct
62 Correct 214 ms 17860 KB Output is correct
63 Correct 290 ms 17992 KB Output is correct
64 Correct 524 ms 19872 KB Output is correct
65 Correct 267 ms 17808 KB Output is correct
66 Correct 429 ms 36220 KB Output is correct
67 Correct 127 ms 18140 KB Output is correct
68 Correct 300 ms 23192 KB Output is correct
69 Correct 298 ms 23484 KB Output is correct
70 Correct 277 ms 22668 KB Output is correct