oj.uz

답안 #990182

# 제출 시각 아이디 문제 언어 결과 실행 시간 메모리
990182 2024-05-29T19:48:21 Z hasan2006 경주 (Race) (IOI11_race) C++17
21 / 100
 343 ms 39508 KB 
//#include "race.h"
#include <bits/stdc++.h>

using namespace std;

#define TL ios::sync_with_stdio(0),cin.tie(0),cout.tie(0);
#define rall(s) s.rbegin(),s.rend()
#define all(s) s.begin(),s.end()
#define pb push_back
#define se second
#define fi first
#define ll long long
#define ld long double
#define YES cout<<"YES\n"
#define Yes cout<<"Yes\n"
#define yes cout<<"yes\n"
#define NO cout<<"NO\n"
#define No cout<<"No\n"
#define no cout<<"no\n"


const int N = 5e5 + 9 , mod = 1e9 + 7;
ll a[N] , b[N] , dp[N] , c[N] , d[N] , sz[N] , us[N];
vector<pair<int,int>>v[N];
int dfs_sz(int n , int par = 0){
    sz[n] = 1;
    for(auto to : v[n])
        if(!us[to.fi] && to.fi != par)
            sz[n] += dfs_sz(to.fi , n);
    return sz[n];
}
ll ans = 1e9 , k;
int get_centroid(int n , int par , int s){
    for(auto to : v[n])
        if(!us[to.fi] && to.fi != par && sz[to.fi] > s / 2)
            return get_centroid(to.fi , n , s);
    return n;
}
set<pair<ll,ll>>st,st1;
void dfs(int n , int par, ll dis  , ll cnt){
    st1.insert({dis , cnt});
    if(dis == k)
        ans = min(ans , cnt);
    auto it = st.lower_bound({k - dis , 0});
    if(it->fi == k - dis)
        ans = min(ans , cnt + it->se);
    for(auto to : v[n])
        if(!us[to.fi] && to.fi != par)
            dfs(to.fi , n , dis + to.se , cnt + 1);
}


void centroid(int n){
    int x = get_centroid(n , 0 , dfs_sz(n));
    us[x] = 1;
    st.clear();
    for(auto to : v[x]){
        if(!us[to.fi]){
            st1.clear();
            dfs(to.fi , x , to.se , 1);
            for(auto it : st1)
                st.insert(it);
        }
    }
    for(auto to : v[x])
        if(!us[to.fi])
            centroid(to.fi);
}

int best_path(int N, int K,  int H[][2], int L[]){
    k = K;
    for(int i = 0; i < N - 1; i++) {
        int x = H[i][0] + 1,y = H[i][1] + 1;
        v[x].pb({y, L[i]});
        v[y].pb({x, L[i]});
    }
    centroid(1);
    if(ans > N)
        ans = -1;
    return ans;
}
// Author : حسن

Subtask #1
9.0 / 9.0

# 결과 실행 시간 메모리 Grader output
1 Correct 3 ms 18780 KB Output is correct
2 Correct 3 ms 18780 KB Output is correct
3 Correct 2 ms 18780 KB Output is correct
4 Correct 3 ms 18780 KB Output is correct
5 Correct 2 ms 18780 KB Output is correct
6 Correct 2 ms 18780 KB Output is correct
7 Correct 2 ms 18780 KB Output is correct
8 Correct 3 ms 18780 KB Output is correct
9 Correct 2 ms 18780 KB Output is correct
10 Correct 2 ms 18780 KB Output is correct
11 Correct 2 ms 18780 KB Output is correct
12 Correct 3 ms 18776 KB Output is correct
13 Correct 2 ms 18780 KB Output is correct
14 Correct 2 ms 18780 KB Output is correct
15 Correct 2 ms 18780 KB Output is correct
16 Correct 3 ms 18780 KB Output is correct
17 Correct 2 ms 18780 KB Output is correct
18 Correct 2 ms 18776 KB Output is correct

Subtask #2
12.0 / 12.0

# 결과 실행 시간 메모리 Grader output
1 Correct 3 ms 18780 KB Output is correct
2 Correct 3 ms 18780 KB Output is correct
3 Correct 2 ms 18780 KB Output is correct
4 Correct 3 ms 18780 KB Output is correct
5 Correct 2 ms 18780 KB Output is correct
6 Correct 2 ms 18780 KB Output is correct
7 Correct 2 ms 18780 KB Output is correct
8 Correct 3 ms 18780 KB Output is correct
9 Correct 2 ms 18780 KB Output is correct
10 Correct 2 ms 18780 KB Output is correct
11 Correct 2 ms 18780 KB Output is correct
12 Correct 3 ms 18776 KB Output is correct
13 Correct 2 ms 18780 KB Output is correct
14 Correct 2 ms 18780 KB Output is correct
15 Correct 2 ms 18780 KB Output is correct
16 Correct 3 ms 18780 KB Output is correct
17 Correct 2 ms 18780 KB Output is correct
18 Correct 2 ms 18776 KB Output is correct
19 Correct 2 ms 18780 KB Output is correct
20 Correct 3 ms 18780 KB Output is correct
21 Correct 4 ms 18888 KB Output is correct
22 Correct 5 ms 18780 KB Output is correct
23 Correct 4 ms 19036 KB Output is correct
24 Correct 4 ms 19036 KB Output is correct
25 Correct 3 ms 19036 KB Output is correct
26 Correct 3 ms 19032 KB Output is correct
27 Correct 3 ms 18780 KB Output is correct
28 Correct 4 ms 18780 KB Output is correct
29 Correct 3 ms 18912 KB Output is correct
30 Correct 4 ms 19032 KB Output is correct
31 Correct 4 ms 18780 KB Output is correct
32 Correct 4 ms 18776 KB Output is correct
33 Correct 4 ms 19036 KB Output is correct
34 Correct 3 ms 19036 KB Output is correct
35 Correct 4 ms 19036 KB Output is correct
36 Correct 4 ms 18780 KB Output is correct
37 Correct 4 ms 18780 KB Output is correct
38 Correct 4 ms 18892 KB Output is correct

Subtask #3
0 / 22.0

# 결과 실행 시간 메모리 Grader output
1 Correct 3 ms 18780 KB Output is correct
2 Correct 3 ms 18780 KB Output is correct
3 Correct 2 ms 18780 KB Output is correct
4 Correct 3 ms 18780 KB Output is correct
5 Correct 2 ms 18780 KB Output is correct
6 Correct 2 ms 18780 KB Output is correct
7 Correct 2 ms 18780 KB Output is correct
8 Correct 3 ms 18780 KB Output is correct
9 Correct 2 ms 18780 KB Output is correct
10 Correct 2 ms 18780 KB Output is correct
11 Correct 2 ms 18780 KB Output is correct
12 Correct 3 ms 18776 KB Output is correct
13 Correct 2 ms 18780 KB Output is correct
14 Correct 2 ms 18780 KB Output is correct
15 Correct 2 ms 18780 KB Output is correct
16 Correct 3 ms 18780 KB Output is correct
17 Correct 2 ms 18780 KB Output is correct
18 Correct 2 ms 18776 KB Output is correct
19 Correct 179 ms 24912 KB Output is correct
20 Correct 175 ms 26132 KB Output is correct
21 Correct 166 ms 25680 KB Output is correct
22 Correct 149 ms 26192 KB Output is correct
23 Correct 233 ms 26992 KB Output is correct
24 Correct 93 ms 26352 KB Output is correct
25 Incorrect 343 ms 39508 KB Output isn't correct
26 Halted 0 ms 0 KB -

Subtask #4
0 / 57.0

# 결과 실행 시간 메모리 Grader output
1 Correct 3 ms 18780 KB Output is correct
2 Correct 3 ms 18780 KB Output is correct
3 Correct 2 ms 18780 KB Output is correct
4 Correct 3 ms 18780 KB Output is correct
5 Correct 2 ms 18780 KB Output is correct
6 Correct 2 ms 18780 KB Output is correct
7 Correct 2 ms 18780 KB Output is correct
8 Correct 3 ms 18780 KB Output is correct
9 Correct 2 ms 18780 KB Output is correct
10 Correct 2 ms 18780 KB Output is correct
11 Correct 2 ms 18780 KB Output is correct
12 Correct 3 ms 18776 KB Output is correct
13 Correct 2 ms 18780 KB Output is correct
14 Correct 2 ms 18780 KB Output is correct
15 Correct 2 ms 18780 KB Output is correct
16 Correct 3 ms 18780 KB Output is correct
17 Correct 2 ms 18780 KB Output is correct
18 Correct 2 ms 18776 KB Output is correct
19 Correct 2 ms 18780 KB Output is correct
20 Correct 3 ms 18780 KB Output is correct
21 Correct 4 ms 18888 KB Output is correct
22 Correct 5 ms 18780 KB Output is correct
23 Correct 4 ms 19036 KB Output is correct
24 Correct 4 ms 19036 KB Output is correct
25 Correct 3 ms 19036 KB Output is correct
26 Correct 3 ms 19032 KB Output is correct
27 Correct 3 ms 18780 KB Output is correct
28 Correct 4 ms 18780 KB Output is correct
29 Correct 3 ms 18912 KB Output is correct
30 Correct 4 ms 19032 KB Output is correct
31 Correct 4 ms 18780 KB Output is correct
32 Correct 4 ms 18776 KB Output is correct
33 Correct 4 ms 19036 KB Output is correct
34 Correct 3 ms 19036 KB Output is correct
35 Correct 4 ms 19036 KB Output is correct
36 Correct 4 ms 18780 KB Output is correct
37 Correct 4 ms 18780 KB Output is correct
38 Correct 4 ms 18892 KB Output is correct
39 Correct 179 ms 24912 KB Output is correct
40 Correct 175 ms 26132 KB Output is correct
41 Correct 166 ms 25680 KB Output is correct
42 Correct 149 ms 26192 KB Output is correct
43 Correct 233 ms 26992 KB Output is correct
44 Correct 93 ms 26352 KB Output is correct
45 Incorrect 343 ms 39508 KB Output isn't correct
46 Halted 0 ms 0 KB -