oj.uz

답안 #1112721

# 제출 시각 아이디 문제 언어 결과 실행 시간 메모리
1112721 2024-11-14T16:53:34 Z hainam2k9 경주 (Race) (IOI11_race) C++17
21 / 100
 3000 ms 18256 KB 
#include <bits/stdc++.h>
#include <race.h>
#define tt cin.tie(0), cout.tie(0), ios_base::sync_with_stdio(0)
#define fo freopen((NAME+".INP").c_str(), "r", stdin), freopen((NAME+".OUT").c_str(), "w", stdout)
#define ll long long
#define ull unsigned long long
#define i128 __int128
#define db long double
#define sz(a) ((int)(a).size())
#define pb emplace_back
#define pf emplace_front
#define pob pop_back
#define pof pop_front
#define lb lower_bound
#define ub upper_bound
#define fi first
#define se second
#define ins emplace
using namespace std;
const int MOD = 1e9+7, MAXN = 2e5+5;
const string NAME = "";
int n,k,rs=MAXN,sz[MAXN],cnt[1000005];
bool del[MAXN];
vector<pair<int,int>> adj[MAXN];
void GetSize(int u, int par){
    sz[u]=1;
    for(pair<int,int> p : adj[u])
        if(p.fi!=par&&!del[p.fi]) GetSize(p.fi,u), sz[u]+=sz[p.fi];
}
int Centroid(int u, int par){
    for(pair<int,int> p : adj[u])
        if(p.fi!=par&&!del[p.fi]&&sz[p.fi]>(n>>1)) return Centroid(p.fi,u);
    return u;
}
void dfs(int u, int par, bool type, int cur, ll len){
    if(k<len) return;
    if(type==1) cnt[len] = !cnt[len] ? cur : min(cnt[len],cur);
    else if(type==0&&cnt[k-len]) rs=min(rs,cnt[k-len]+cur);
    else if(len==k) rs=min(rs,cur);
    for(pair<int,int> p : adj[u])
        if(p.fi!=par) dfs(p.fi,u,type,cur+1,len+p.se);
}
void CentroidDecomposition(int u){
    GetSize(u,0), n=sz[u];
    int root=Centroid(u,0);
    memset(cnt,0,(k+1)*sizeof(int));
    for(pair<int,int> p : adj[root])
        if(!del[p.fi]) dfs(p.fi,root,0,1,p.se), dfs(p.fi,root,1,1,p.se);
    del[root]=1;
    for(pair<int,int> p : adj[root])
        if(!del[p.fi]) CentroidDecomposition(p.fi);
}
int best_path(int N, int K, int h[][2], int l[]){
    n=N, k=K;
    for(int i = 1; i<n; ++i)
        adj[h[i-1][0]+1].pb(h[i-1][1]+1,l[i-1]), adj[h[i-1][1]+1].pb(h[i-1][0]+1,l[i-1]);
    CentroidDecomposition(1);
    return rs==MAXN ? -1 : rs;
}
//int main()
//{
//    tt;
//    if(fopen((NAME + ".INP").c_str(), "r")) fo;
//    cin >> n >> k;
//    int h[n][2], l[n];
//    for(int i = 0; i<n-1; ++i)
//        cin >> h[i][0] >> h[i][1] >> l[i];
//    cout << best_path(n,k,h,l);
//    cerr << 1.0L*clock()/CLOCKS_PER_SEC << "s\n";
//}

Subtask #1
9.0 / 9.0

# 결과 실행 시간 메모리 Grader output
1 Correct 3 ms 10576 KB Output is correct
2 Correct 2 ms 10576 KB Output is correct
3 Correct 3 ms 10576 KB Output is correct
4 Correct 2 ms 10576 KB Output is correct
5 Correct 2 ms 10576 KB Output is correct
6 Correct 3 ms 8528 KB Output is correct
7 Correct 2 ms 10576 KB Output is correct
8 Correct 3 ms 10576 KB Output is correct
9 Correct 2 ms 10576 KB Output is correct
10 Correct 2 ms 10576 KB Output is correct
11 Correct 2 ms 10576 KB Output is correct
12 Correct 2 ms 10576 KB Output is correct
13 Correct 3 ms 10576 KB Output is correct
14 Correct 2 ms 10576 KB Output is correct
15 Correct 2 ms 10576 KB Output is correct
16 Correct 2 ms 10576 KB Output is correct
17 Correct 2 ms 10576 KB Output is correct
18 Correct 2 ms 10576 KB Output is correct

Subtask #2
12.0 / 12.0

# 결과 실행 시간 메모리 Grader output
1 Correct 3 ms 10576 KB Output is correct
2 Correct 2 ms 10576 KB Output is correct
3 Correct 3 ms 10576 KB Output is correct
4 Correct 2 ms 10576 KB Output is correct
5 Correct 2 ms 10576 KB Output is correct
6 Correct 3 ms 8528 KB Output is correct
7 Correct 2 ms 10576 KB Output is correct
8 Correct 3 ms 10576 KB Output is correct
9 Correct 2 ms 10576 KB Output is correct
10 Correct 2 ms 10576 KB Output is correct
11 Correct 2 ms 10576 KB Output is correct
12 Correct 2 ms 10576 KB Output is correct
13 Correct 3 ms 10576 KB Output is correct
14 Correct 2 ms 10576 KB Output is correct
15 Correct 2 ms 10576 KB Output is correct
16 Correct 2 ms 10576 KB Output is correct
17 Correct 2 ms 10576 KB Output is correct
18 Correct 2 ms 10576 KB Output is correct
19 Correct 2 ms 10576 KB Output is correct
20 Correct 2 ms 10576 KB Output is correct
21 Correct 4 ms 10576 KB Output is correct
22 Correct 68 ms 12624 KB Output is correct
23 Correct 45 ms 12624 KB Output is correct
24 Correct 67 ms 12796 KB Output is correct
25 Correct 67 ms 10064 KB Output is correct
26 Correct 22 ms 10576 KB Output is correct
27 Correct 60 ms 12624 KB Output is correct
28 Correct 15 ms 10576 KB Output is correct
29 Correct 27 ms 10576 KB Output is correct
30 Correct 30 ms 10576 KB Output is correct
31 Correct 41 ms 12796 KB Output is correct
32 Correct 55 ms 12624 KB Output is correct
33 Correct 50 ms 12624 KB Output is correct
34 Correct 35 ms 12624 KB Output is correct
35 Correct 57 ms 12624 KB Output is correct
36 Correct 54 ms 12624 KB Output is correct
37 Correct 45 ms 12636 KB Output is correct
38 Correct 46 ms 12624 KB Output is correct

Subtask #3
0 / 22.0

# 결과 실행 시간 메모리 Grader output
1 Correct 3 ms 10576 KB Output is correct
2 Correct 2 ms 10576 KB Output is correct
3 Correct 3 ms 10576 KB Output is correct
4 Correct 2 ms 10576 KB Output is correct
5 Correct 2 ms 10576 KB Output is correct
6 Correct 3 ms 8528 KB Output is correct
7 Correct 2 ms 10576 KB Output is correct
8 Correct 3 ms 10576 KB Output is correct
9 Correct 2 ms 10576 KB Output is correct
10 Correct 2 ms 10576 KB Output is correct
11 Correct 2 ms 10576 KB Output is correct
12 Correct 2 ms 10576 KB Output is correct
13 Correct 3 ms 10576 KB Output is correct
14 Correct 2 ms 10576 KB Output is correct
15 Correct 2 ms 10576 KB Output is correct
16 Correct 2 ms 10576 KB Output is correct
17 Correct 2 ms 10576 KB Output is correct
18 Correct 2 ms 10576 KB Output is correct
19 Correct 655 ms 16764 KB Output is correct
20 Correct 552 ms 16976 KB Output is correct
21 Correct 1696 ms 17000 KB Output is correct
22 Execution timed out 3048 ms 18256 KB Time limit exceeded
23 Halted 0 ms 0 KB -

Subtask #4
0 / 57.0

# 결과 실행 시간 메모리 Grader output
1 Correct 3 ms 10576 KB Output is correct
2 Correct 2 ms 10576 KB Output is correct
3 Correct 3 ms 10576 KB Output is correct
4 Correct 2 ms 10576 KB Output is correct
5 Correct 2 ms 10576 KB Output is correct
6 Correct 3 ms 8528 KB Output is correct
7 Correct 2 ms 10576 KB Output is correct
8 Correct 3 ms 10576 KB Output is correct
9 Correct 2 ms 10576 KB Output is correct
10 Correct 2 ms 10576 KB Output is correct
11 Correct 2 ms 10576 KB Output is correct
12 Correct 2 ms 10576 KB Output is correct
13 Correct 3 ms 10576 KB Output is correct
14 Correct 2 ms 10576 KB Output is correct
15 Correct 2 ms 10576 KB Output is correct
16 Correct 2 ms 10576 KB Output is correct
17 Correct 2 ms 10576 KB Output is correct
18 Correct 2 ms 10576 KB Output is correct
19 Correct 2 ms 10576 KB Output is correct
20 Correct 2 ms 10576 KB Output is correct
21 Correct 4 ms 10576 KB Output is correct
22 Correct 68 ms 12624 KB Output is correct
23 Correct 45 ms 12624 KB Output is correct
24 Correct 67 ms 12796 KB Output is correct
25 Correct 67 ms 10064 KB Output is correct
26 Correct 22 ms 10576 KB Output is correct
27 Correct 60 ms 12624 KB Output is correct
28 Correct 15 ms 10576 KB Output is correct
29 Correct 27 ms 10576 KB Output is correct
30 Correct 30 ms 10576 KB Output is correct
31 Correct 41 ms 12796 KB Output is correct
32 Correct 55 ms 12624 KB Output is correct
33 Correct 50 ms 12624 KB Output is correct
34 Correct 35 ms 12624 KB Output is correct
35 Correct 57 ms 12624 KB Output is correct
36 Correct 54 ms 12624 KB Output is correct
37 Correct 45 ms 12636 KB Output is correct
38 Correct 46 ms 12624 KB Output is correct
39 Correct 655 ms 16764 KB Output is correct
40 Correct 552 ms 16976 KB Output is correct
41 Correct 1696 ms 17000 KB Output is correct
42 Execution timed out 3048 ms 18256 KB Time limit exceeded
43 Halted 0 ms 0 KB -