oj.uz

Submission #551233

# Submission time Handle Problem Language Result Execution time Memory
551233 2022-04-20T06:11:41 Z alirezasamimi100 Race (IOI11_race) C++17
100 / 100
 1243 ms 42256 KB 
#include "race.h"
#include <bits/stdc++.h>
using namespace std;
using ll = long long int;
using pll= pair<ll,ll>;
#define pb push_back
vector<pll> adj[200010];
bool hide[200010];
ll sz[200010],k,ans=1e9;
map<ll,ll> mp;
void plant(ll v , ll p = 0){
    sz[v] = 1;
    for(auto [u,w] : adj[v])
        if(u != p && !hide[u]){
            plant(u , v);
            sz[v] += sz[u];
        }
}
ll find_centroid(ll v , ll n , ll p = 0){
    bool found = 1;
    while(found){
        found = 0;
        for(auto [u,w] : adj[v])
            if(u != p && !hide[u] && sz[u] * 2 > n){
                found = 1;
                p = v;
                v = u;
                break;
            }
    }
    return v;
}
void dfs(ll v, ll x, ll h, ll p=0){
    if(x<=k && mp.count(k-x)) ans=min(ans,h+mp[k-x]);
    for(auto [u,w] : adj[v]) if(!hide[u] && u!=p) dfs(u,x+w,h+1,v);
}
void sfd(ll v, ll x, ll h, ll p=0){
    if(x<=k && (!mp.count(x) || mp[x]>h)) mp[x]=h;
    for(auto [u,w] : adj[v]) if(!hide[u] && u!=p) sfd(u,x+w,h+1,v);
}
void solve(ll v){
    plant(v);
    v = find_centroid(v , sz[v]);
    hide[v] = 1;
    mp.clear();
    mp[0]=0;
    for(auto [u,w] : adj[v]){
        if(!hide[u]){
            dfs(u,w,1);
            sfd(u,w,1);
        }
    }
    for(auto [u,w] : adj[v]) if(!hide[u]) solve(u);
}
int best_path(int N, int K, int H[][2], int L[]){
    for(ll i=0; i<N-1; i++){
        ll v=H[i][0]+1,u=H[i][1]+1;
        adj[v].pb({u,L[i]});
        adj[u].pb({v,L[i]});
    }
    k=K;
    solve(1);
    if(ans==1e9) ans=-1;
    return ans;
}

Subtask #1
9.0 / 9.0

# Verdict Execution time Memory Grader output
1 Correct 4 ms 4948 KB Output is correct
2 Correct 3 ms 4948 KB Output is correct
3 Correct 4 ms 4948 KB Output is correct
4 Correct 3 ms 4948 KB Output is correct
5 Correct 5 ms 4924 KB Output is correct
6 Correct 3 ms 4948 KB Output is correct
7 Correct 5 ms 4948 KB Output is correct
8 Correct 3 ms 4948 KB Output is correct
9 Correct 3 ms 4948 KB Output is correct
10 Correct 4 ms 4948 KB Output is correct
11 Correct 3 ms 4948 KB Output is correct
12 Correct 3 ms 4948 KB Output is correct
13 Correct 4 ms 4948 KB Output is correct
14 Correct 4 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 4 ms 4948 KB Output is correct
2 Correct 3 ms 4948 KB Output is correct
3 Correct 4 ms 4948 KB Output is correct
4 Correct 3 ms 4948 KB Output is correct
5 Correct 5 ms 4924 KB Output is correct
6 Correct 3 ms 4948 KB Output is correct
7 Correct 5 ms 4948 KB Output is correct
8 Correct 3 ms 4948 KB Output is correct
9 Correct 3 ms 4948 KB Output is correct
10 Correct 4 ms 4948 KB Output is correct
11 Correct 3 ms 4948 KB Output is correct
12 Correct 3 ms 4948 KB Output is correct
13 Correct 4 ms 4948 KB Output is correct
14 Correct 4 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 5000 KB Output is correct
20 Correct 4 ms 4948 KB Output is correct
21 Correct 4 ms 5076 KB Output is correct
22 Correct 4 ms 5076 KB Output is correct
23 Correct 4 ms 5076 KB Output is correct
24 Correct 4 ms 5076 KB Output is correct
25 Correct 4 ms 5076 KB Output is correct
26 Correct 4 ms 5076 KB Output is correct
27 Correct 4 ms 5076 KB Output is correct
28 Correct 6 ms 5076 KB Output is correct
29 Correct 4 ms 5076 KB Output is correct
30 Correct 6 ms 5148 KB Output is correct
31 Correct 5 ms 5076 KB Output is correct
32 Correct 4 ms 5076 KB Output is correct
33 Correct 4 ms 5076 KB Output is correct
34 Correct 4 ms 5076 KB Output is correct
35 Correct 5 ms 5076 KB Output is correct
36 Correct 4 ms 5076 KB Output is correct
37 Correct 4 ms 5076 KB Output is correct
38 Correct 6 ms 5156 KB Output is correct

Subtask #3
22.0 / 22.0

# Verdict Execution time Memory Grader output
1 Correct 4 ms 4948 KB Output is correct
2 Correct 3 ms 4948 KB Output is correct
3 Correct 4 ms 4948 KB Output is correct
4 Correct 3 ms 4948 KB Output is correct
5 Correct 5 ms 4924 KB Output is correct
6 Correct 3 ms 4948 KB Output is correct
7 Correct 5 ms 4948 KB Output is correct
8 Correct 3 ms 4948 KB Output is correct
9 Correct 3 ms 4948 KB Output is correct
10 Correct 4 ms 4948 KB Output is correct
11 Correct 3 ms 4948 KB Output is correct
12 Correct 3 ms 4948 KB Output is correct
13 Correct 4 ms 4948 KB Output is correct
14 Correct 4 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 299 ms 12160 KB Output is correct
20 Correct 357 ms 12164 KB Output is correct
21 Correct 314 ms 12108 KB Output is correct
22 Correct 304 ms 12204 KB Output is correct
23 Correct 169 ms 12544 KB Output is correct
24 Correct 101 ms 11664 KB Output is correct
25 Correct 203 ms 16700 KB Output is correct
26 Correct 150 ms 18264 KB Output is correct
27 Correct 293 ms 20144 KB Output is correct
28 Correct 590 ms 31332 KB Output is correct
29 Correct 623 ms 30428 KB Output is correct
30 Correct 280 ms 20232 KB Output is correct
31 Correct 308 ms 20224 KB Output is correct
32 Correct 374 ms 20124 KB Output is correct
33 Correct 523 ms 18928 KB Output is correct
34 Correct 432 ms 18944 KB Output is correct

Subtask #4
57.0 / 57.0

# Verdict Execution time Memory Grader output
1 Correct 4 ms 4948 KB Output is correct
2 Correct 3 ms 4948 KB Output is correct
3 Correct 4 ms 4948 KB Output is correct
4 Correct 3 ms 4948 KB Output is correct
5 Correct 5 ms 4924 KB Output is correct
6 Correct 3 ms 4948 KB Output is correct
7 Correct 5 ms 4948 KB Output is correct
8 Correct 3 ms 4948 KB Output is correct
9 Correct 3 ms 4948 KB Output is correct
10 Correct 4 ms 4948 KB Output is correct
11 Correct 3 ms 4948 KB Output is correct
12 Correct 3 ms 4948 KB Output is correct
13 Correct 4 ms 4948 KB Output is correct
14 Correct 4 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 5000 KB Output is correct
20 Correct 4 ms 4948 KB Output is correct
21 Correct 4 ms 5076 KB Output is correct
22 Correct 4 ms 5076 KB Output is correct
23 Correct 4 ms 5076 KB Output is correct
24 Correct 4 ms 5076 KB Output is correct
25 Correct 4 ms 5076 KB Output is correct
26 Correct 4 ms 5076 KB Output is correct
27 Correct 4 ms 5076 KB Output is correct
28 Correct 6 ms 5076 KB Output is correct
29 Correct 4 ms 5076 KB Output is correct
30 Correct 6 ms 5148 KB Output is correct
31 Correct 5 ms 5076 KB Output is correct
32 Correct 4 ms 5076 KB Output is correct
33 Correct 4 ms 5076 KB Output is correct
34 Correct 4 ms 5076 KB Output is correct
35 Correct 5 ms 5076 KB Output is correct
36 Correct 4 ms 5076 KB Output is correct
37 Correct 4 ms 5076 KB Output is correct
38 Correct 6 ms 5156 KB Output is correct
39 Correct 299 ms 12160 KB Output is correct
40 Correct 357 ms 12164 KB Output is correct
41 Correct 314 ms 12108 KB Output is correct
42 Correct 304 ms 12204 KB Output is correct
43 Correct 169 ms 12544 KB Output is correct
44 Correct 101 ms 11664 KB Output is correct
45 Correct 203 ms 16700 KB Output is correct
46 Correct 150 ms 18264 KB Output is correct
47 Correct 293 ms 20144 KB Output is correct
48 Correct 590 ms 31332 KB Output is correct
49 Correct 623 ms 30428 KB Output is correct
50 Correct 280 ms 20232 KB Output is correct
51 Correct 308 ms 20224 KB Output is correct
52 Correct 374 ms 20124 KB Output is correct
53 Correct 523 ms 18928 KB Output is correct
54 Correct 432 ms 18944 KB Output is correct
55 Correct 26 ms 6012 KB Output is correct
56 Correct 18 ms 5764 KB Output is correct
57 Correct 158 ms 12780 KB Output is correct
58 Correct 50 ms 12068 KB Output is correct
59 Correct 322 ms 22964 KB Output is correct
60 Correct 1139 ms 42256 KB Output is correct
61 Correct 343 ms 20560 KB Output is correct
62 Correct 336 ms 20408 KB Output is correct
63 Correct 401 ms 20412 KB Output is correct
64 Correct 1243 ms 25756 KB Output is correct
65 Correct 354 ms 19764 KB Output is correct
66 Correct 724 ms 28588 KB Output is correct
67 Correct 130 ms 18880 KB Output is correct
68 Correct 432 ms 24532 KB Output is correct
69 Correct 458 ms 24280 KB Output is correct
70 Correct 452 ms 23668 KB Output is correct