oj.uz

Submission #713011

# Submission time Handle Problem Language Result Execution time Memory
713011 2023-03-20T20:16:10 Z Ahmed57 Race (IOI11_race) C++14
100 / 100
 1392 ms 51184 KB 
#include <bits/stdc++.h>

using namespace std;
int sz[200007];long long all = 0;
int vis[200007];
vector<pair<int,int>> adj[200007];
bool ss = 0;
map<long long,long long> mp;
long long k;
long long ans = 1e18;
void calc(int no,int pr,long long dep,long long cost){
    if(cost>k)return ;
    if(ss){
        if(mp[cost]==0)mp[cost] = dep;
        else mp[cost] = min(mp[cost],dep);
    }else{
        if(mp[k-cost]!=0){
            ans = min(ans,dep+mp[k-cost]-2);
        }
    }
    for(auto i:adj[no]){
        if(i.first==pr||vis[i.first])continue;
        calc(i.first,no,dep+1,cost+i.second);
    }
}
int dfs(int no,int pr){
    sz[no] = 1;
    for(auto i:adj[no]){
        if(i.first==pr||vis[i.first]!=0)continue;
        sz[no]+=dfs(i.first,no);
    }
    return sz[no];
}
int get_centroid(int no,int ss,int pr){
    for(auto i:adj[no]){
        if(pr==i.first||vis[i.first]!=0)continue;
        if(sz[i.first]*2>ss){
            return get_centroid(i.first,ss,no);
        }
    }
    return no;
}
void centroid(int no){
    int cen = get_centroid(no,dfs(no,-1),-1);
    mp.clear();
    mp[0] = 1;
    vis[cen] = 1;
    for(auto i:adj[cen]){
        if(vis[i.first])continue;
        ss = 0;
        calc(i.first,-1,2,i.second);
        ss = 1;
        calc(i.first,-1,2,i.second);
    }
    for(auto i:adj[cen]){
        if(vis[i.first])continue;
        centroid(i.first);
    }
}
int best_path(int N,int K,int H[][2],int L[]){
    k = K;
    for(int i = 0;i<N-1;i++){
        adj[H[i][0]+1].push_back({H[i][1]+1,L[i]});
        adj[H[i][1]+1].push_back({H[i][0]+1,L[i]});
    }
    centroid(1);
    return (ans==1e18?-1:ans);
}
/*
int main(){
    ios_base::sync_with_stdio(false);cin.tie(0);cout.tie(0);
    int N = 3 , K = 3;
    int L[] = {1,2,4};
    int H[3][2] = {{0,1},{1,2},{1,3}};
    cout<<best_path(N,K,H,L);
}
*/

Subtask #1
9.0 / 9.0

# Verdict Execution time Memory Grader output
1 Correct 3 ms 4948 KB Output is correct
2 Correct 3 ms 4948 KB Output is correct
3 Correct 4 ms 5016 KB Output is correct
4 Correct 3 ms 5012 KB Output is correct
5 Correct 3 ms 5020 KB Output is correct
6 Correct 3 ms 5020 KB Output is correct
7 Correct 3 ms 5020 KB Output is correct
8 Correct 3 ms 4948 KB Output is correct
9 Correct 3 ms 4948 KB Output is correct
10 Correct 3 ms 4948 KB Output is correct
11 Correct 3 ms 5016 KB Output is correct
12 Correct 3 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 4948 KB Output is correct
16 Correct 3 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

# Verdict Execution time Memory Grader output
1 Correct 3 ms 4948 KB Output is correct
2 Correct 3 ms 4948 KB Output is correct
3 Correct 4 ms 5016 KB Output is correct
4 Correct 3 ms 5012 KB Output is correct
5 Correct 3 ms 5020 KB Output is correct
6 Correct 3 ms 5020 KB Output is correct
7 Correct 3 ms 5020 KB Output is correct
8 Correct 3 ms 4948 KB Output is correct
9 Correct 3 ms 4948 KB Output is correct
10 Correct 3 ms 4948 KB Output is correct
11 Correct 3 ms 5016 KB Output is correct
12 Correct 3 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 4948 KB Output is correct
16 Correct 3 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 3 ms 4948 KB Output is correct
20 Correct 3 ms 4948 KB Output is correct
21 Correct 5 ms 5020 KB Output is correct
22 Correct 4 ms 5076 KB Output is correct
23 Correct 4 ms 5024 KB Output is correct
24 Correct 4 ms 5076 KB Output is correct
25 Correct 5 ms 5156 KB Output is correct
26 Correct 4 ms 5076 KB Output is correct
27 Correct 3 ms 5036 KB Output is correct
28 Correct 5 ms 5156 KB Output is correct
29 Correct 5 ms 5204 KB Output is correct
30 Correct 5 ms 5204 KB Output is correct
31 Correct 5 ms 5152 KB Output is correct
32 Correct 5 ms 5204 KB Output is correct
33 Correct 6 ms 5204 KB Output is correct
34 Correct 4 ms 5028 KB Output is correct
35 Correct 5 ms 5076 KB Output is correct
36 Correct 5 ms 5020 KB Output is correct
37 Correct 5 ms 5204 KB Output is correct
38 Correct 5 ms 5148 KB Output is correct

Subtask #3
22.0 / 22.0

# Verdict Execution time Memory Grader output
1 Correct 3 ms 4948 KB Output is correct
2 Correct 3 ms 4948 KB Output is correct
3 Correct 4 ms 5016 KB Output is correct
4 Correct 3 ms 5012 KB Output is correct
5 Correct 3 ms 5020 KB Output is correct
6 Correct 3 ms 5020 KB Output is correct
7 Correct 3 ms 5020 KB Output is correct
8 Correct 3 ms 4948 KB Output is correct
9 Correct 3 ms 4948 KB Output is correct
10 Correct 3 ms 4948 KB Output is correct
11 Correct 3 ms 5016 KB Output is correct
12 Correct 3 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 4948 KB Output is correct
16 Correct 3 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 227 ms 11972 KB Output is correct
20 Correct 227 ms 11980 KB Output is correct
21 Correct 229 ms 11992 KB Output is correct
22 Correct 220 ms 12096 KB Output is correct
23 Correct 92 ms 12304 KB Output is correct
24 Correct 83 ms 12192 KB Output is correct
25 Correct 155 ms 14736 KB Output is correct
26 Correct 109 ms 17660 KB Output is correct
27 Correct 234 ms 18124 KB Output is correct
28 Correct 268 ms 29968 KB Output is correct
29 Correct 276 ms 29064 KB Output is correct
30 Correct 239 ms 18796 KB Output is correct
31 Correct 230 ms 18708 KB Output is correct
32 Correct 259 ms 18860 KB Output is correct
33 Correct 354 ms 17536 KB Output is correct
34 Correct 182 ms 17628 KB Output is correct

Subtask #4
57.0 / 57.0

# Verdict Execution time Memory Grader output
1 Correct 3 ms 4948 KB Output is correct
2 Correct 3 ms 4948 KB Output is correct
3 Correct 4 ms 5016 KB Output is correct
4 Correct 3 ms 5012 KB Output is correct
5 Correct 3 ms 5020 KB Output is correct
6 Correct 3 ms 5020 KB Output is correct
7 Correct 3 ms 5020 KB Output is correct
8 Correct 3 ms 4948 KB Output is correct
9 Correct 3 ms 4948 KB Output is correct
10 Correct 3 ms 4948 KB Output is correct
11 Correct 3 ms 5016 KB Output is correct
12 Correct 3 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 4948 KB Output is correct
16 Correct 3 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 3 ms 4948 KB Output is correct
20 Correct 3 ms 4948 KB Output is correct
21 Correct 5 ms 5020 KB Output is correct
22 Correct 4 ms 5076 KB Output is correct
23 Correct 4 ms 5024 KB Output is correct
24 Correct 4 ms 5076 KB Output is correct
25 Correct 5 ms 5156 KB Output is correct
26 Correct 4 ms 5076 KB Output is correct
27 Correct 3 ms 5036 KB Output is correct
28 Correct 5 ms 5156 KB Output is correct
29 Correct 5 ms 5204 KB Output is correct
30 Correct 5 ms 5204 KB Output is correct
31 Correct 5 ms 5152 KB Output is correct
32 Correct 5 ms 5204 KB Output is correct
33 Correct 6 ms 5204 KB Output is correct
34 Correct 4 ms 5028 KB Output is correct
35 Correct 5 ms 5076 KB Output is correct
36 Correct 5 ms 5020 KB Output is correct
37 Correct 5 ms 5204 KB Output is correct
38 Correct 5 ms 5148 KB Output is correct
39 Correct 227 ms 11972 KB Output is correct
40 Correct 227 ms 11980 KB Output is correct
41 Correct 229 ms 11992 KB Output is correct
42 Correct 220 ms 12096 KB Output is correct
43 Correct 92 ms 12304 KB Output is correct
44 Correct 83 ms 12192 KB Output is correct
45 Correct 155 ms 14736 KB Output is correct
46 Correct 109 ms 17660 KB Output is correct
47 Correct 234 ms 18124 KB Output is correct
48 Correct 268 ms 29968 KB Output is correct
49 Correct 276 ms 29064 KB Output is correct
50 Correct 239 ms 18796 KB Output is correct
51 Correct 230 ms 18708 KB Output is correct
52 Correct 259 ms 18860 KB Output is correct
53 Correct 354 ms 17536 KB Output is correct
54 Correct 182 ms 17628 KB Output is correct
55 Correct 26 ms 5972 KB Output is correct
56 Correct 19 ms 5588 KB Output is correct
57 Correct 183 ms 12216 KB Output is correct
58 Correct 46 ms 11948 KB Output is correct
59 Correct 422 ms 26532 KB Output is correct
60 Correct 1289 ms 51184 KB Output is correct
61 Correct 341 ms 18988 KB Output is correct
62 Correct 365 ms 19148 KB Output is correct
63 Correct 429 ms 19236 KB Output is correct
64 Correct 1392 ms 30716 KB Output is correct
65 Correct 211 ms 18788 KB Output is correct
66 Correct 819 ms 27596 KB Output is correct
67 Correct 140 ms 19276 KB Output is correct
68 Correct 558 ms 28484 KB Output is correct
69 Correct 533 ms 28236 KB Output is correct
70 Correct 523 ms 27684 KB Output is correct