oj.uz

Submission #964938

# Submission time Handle Problem Language Result Execution time Memory
964938 2024-04-17T18:10:31 Z Younis_Dwai Race (IOI11_race) C++14
21 / 100
 3000 ms 41452 KB 
#include "race.h"
#include <bits/stdc++.h>
#define F first
#define S second
#define pb push_back
using namespace std ;
const int MN=1e6+1;
bitset<MN> vis;
int res,k;
vector<int> dp(MN),sz(MN);
vector<pair<int,int>> adj[MN];
void dfs_sz(int node , int par){
     sz[node]=1;
     for(auto u : adj[node]){
         if(vis[u.F] || u.F==par) continue ;
         dfs_sz(u.F,node);
     }
     return ;
}
int  get_centroid(int node ,int par , int d){
     for(auto u : adj[node]){
         if(vis[u.F] || u.F==par || sz[u.F]<=d) continue ;
         return get_centroid(u.F,node,d);
     }
     return node;
}
void dfs_calc(int node, int par , int done ,int dis){
     res=min(res,dp[k-dis]+done);
     for(auto u : adj[node]){
         if(u.F==par || vis[u.F] || dis+u.S>k) continue ;
         dfs_calc(u.F,node,done+1,dis+u.S);
     }
     return ;
}
void dfs_upd(int node , int par , int done , int dis){
     dp[dis]=min(done,dp[dis]);
     for(auto u : adj[node]){
         if(u.F==par || vis[u.F] || dis+u.S>k) continue ;
         dfs_upd(u.F,node,done+1,dis+u.S);
     }
     return ;
}
void dfs_fill(int node , int par ,int dis){
     if(dp[dis]!=1e9) dp[dis]=1e9;
     for(auto u : adj[node]){
         if(u.F==par || vis[u.F] || dis+u.S>k) continue ;
         dfs_fill(u.F,node,dis+u.S);
     }
     return ;
}
void dfs(int node){
     dfs_sz(node,node);
     int centroid=get_centroid(node,node,sz[node]/2);
     vis[centroid]=1;
     dp[0]=0;
     for(auto u : adj[centroid]){
         if(vis[u.F] || u.S>k) continue ;
         dfs_calc(u.F,centroid,1,u.S);
         dfs_upd(u.F,centroid,1,u.S);
     }
     for(auto u : adj[centroid]){
         if(u.S>k || vis[u.F]) continue ;
         dfs_fill(u.F,centroid,u.S);
     }
     for(auto u :  adj[centroid]){
         if(vis[u.F]) continue ;
         dfs(u.F);
     }
     return ;
}
int best_path(int N, int K, int H[][2], int L[]){
    res=1e9;
    k=K;
    for(int i=0;i<=K;i++) dp[i]=1e9;
    for(int i=0;i<N-1;i++){
        adj[H[i][0]].pb({H[i][1],L[i]});
        adj[H[i][1]].pb({H[i][0],L[i]});
    }
    dfs(0);
    if(res==1e9) return -1;
    else return res;
    return 0;
}

Subtask #1
9.0 / 9.0

# Verdict Execution time Memory Grader output
1 Correct 11 ms 35164 KB Output is correct
2 Correct 9 ms 35164 KB Output is correct
3 Correct 9 ms 35168 KB Output is correct
4 Correct 9 ms 35164 KB Output is correct
5 Correct 9 ms 35160 KB Output is correct
6 Correct 8 ms 35164 KB Output is correct
7 Correct 8 ms 35416 KB Output is correct
8 Correct 8 ms 35160 KB Output is correct
9 Correct 8 ms 35164 KB Output is correct
10 Correct 9 ms 35164 KB Output is correct
11 Correct 8 ms 35164 KB Output is correct
12 Correct 9 ms 35416 KB Output is correct
13 Correct 8 ms 35164 KB Output is correct
14 Correct 8 ms 35416 KB Output is correct
15 Correct 8 ms 35164 KB Output is correct
16 Correct 9 ms 35164 KB Output is correct
17 Correct 9 ms 35164 KB Output is correct
18 Correct 10 ms 35412 KB Output is correct

Subtask #2
12.0 / 12.0

# Verdict Execution time Memory Grader output
1 Correct 11 ms 35164 KB Output is correct
2 Correct 9 ms 35164 KB Output is correct
3 Correct 9 ms 35168 KB Output is correct
4 Correct 9 ms 35164 KB Output is correct
5 Correct 9 ms 35160 KB Output is correct
6 Correct 8 ms 35164 KB Output is correct
7 Correct 8 ms 35416 KB Output is correct
8 Correct 8 ms 35160 KB Output is correct
9 Correct 8 ms 35164 KB Output is correct
10 Correct 9 ms 35164 KB Output is correct
11 Correct 8 ms 35164 KB Output is correct
12 Correct 9 ms 35416 KB Output is correct
13 Correct 8 ms 35164 KB Output is correct
14 Correct 8 ms 35416 KB Output is correct
15 Correct 8 ms 35164 KB Output is correct
16 Correct 9 ms 35164 KB Output is correct
17 Correct 9 ms 35164 KB Output is correct
18 Correct 10 ms 35412 KB Output is correct
19 Correct 10 ms 35160 KB Output is correct
20 Correct 10 ms 35404 KB Output is correct
21 Correct 25 ms 35464 KB Output is correct
22 Correct 17 ms 35420 KB Output is correct
23 Correct 13 ms 35488 KB Output is correct
24 Correct 12 ms 35416 KB Output is correct
25 Correct 35 ms 35420 KB Output is correct
26 Correct 15 ms 35420 KB Output is correct
27 Correct 15 ms 35276 KB Output is correct
28 Correct 20 ms 35496 KB Output is correct
29 Correct 21 ms 35444 KB Output is correct
30 Correct 22 ms 35420 KB Output is correct
31 Correct 28 ms 35572 KB Output is correct
32 Correct 26 ms 35416 KB Output is correct
33 Correct 24 ms 35460 KB Output is correct
34 Correct 17 ms 35476 KB Output is correct
35 Correct 14 ms 35420 KB Output is correct
36 Correct 14 ms 35412 KB Output is correct
37 Correct 25 ms 35416 KB Output is correct
38 Correct 24 ms 35416 KB Output is correct

Subtask #3
0 / 22.0

# Verdict Execution time Memory Grader output
1 Correct 11 ms 35164 KB Output is correct
2 Correct 9 ms 35164 KB Output is correct
3 Correct 9 ms 35168 KB Output is correct
4 Correct 9 ms 35164 KB Output is correct
5 Correct 9 ms 35160 KB Output is correct
6 Correct 8 ms 35164 KB Output is correct
7 Correct 8 ms 35416 KB Output is correct
8 Correct 8 ms 35160 KB Output is correct
9 Correct 8 ms 35164 KB Output is correct
10 Correct 9 ms 35164 KB Output is correct
11 Correct 8 ms 35164 KB Output is correct
12 Correct 9 ms 35416 KB Output is correct
13 Correct 8 ms 35164 KB Output is correct
14 Correct 8 ms 35416 KB Output is correct
15 Correct 8 ms 35164 KB Output is correct
16 Correct 9 ms 35164 KB Output is correct
17 Correct 9 ms 35164 KB Output is correct
18 Correct 10 ms 35412 KB Output is correct
19 Execution timed out 3054 ms 41452 KB Time limit exceeded
20 Halted 0 ms 0 KB -

Subtask #4
0 / 57.0

# Verdict Execution time Memory Grader output
1 Correct 11 ms 35164 KB Output is correct
2 Correct 9 ms 35164 KB Output is correct
3 Correct 9 ms 35168 KB Output is correct
4 Correct 9 ms 35164 KB Output is correct
5 Correct 9 ms 35160 KB Output is correct
6 Correct 8 ms 35164 KB Output is correct
7 Correct 8 ms 35416 KB Output is correct
8 Correct 8 ms 35160 KB Output is correct
9 Correct 8 ms 35164 KB Output is correct
10 Correct 9 ms 35164 KB Output is correct
11 Correct 8 ms 35164 KB Output is correct
12 Correct 9 ms 35416 KB Output is correct
13 Correct 8 ms 35164 KB Output is correct
14 Correct 8 ms 35416 KB Output is correct
15 Correct 8 ms 35164 KB Output is correct
16 Correct 9 ms 35164 KB Output is correct
17 Correct 9 ms 35164 KB Output is correct
18 Correct 10 ms 35412 KB Output is correct
19 Correct 10 ms 35160 KB Output is correct
20 Correct 10 ms 35404 KB Output is correct
21 Correct 25 ms 35464 KB Output is correct
22 Correct 17 ms 35420 KB Output is correct
23 Correct 13 ms 35488 KB Output is correct
24 Correct 12 ms 35416 KB Output is correct
25 Correct 35 ms 35420 KB Output is correct
26 Correct 15 ms 35420 KB Output is correct
27 Correct 15 ms 35276 KB Output is correct
28 Correct 20 ms 35496 KB Output is correct
29 Correct 21 ms 35444 KB Output is correct
30 Correct 22 ms 35420 KB Output is correct
31 Correct 28 ms 35572 KB Output is correct
32 Correct 26 ms 35416 KB Output is correct
33 Correct 24 ms 35460 KB Output is correct
34 Correct 17 ms 35476 KB Output is correct
35 Correct 14 ms 35420 KB Output is correct
36 Correct 14 ms 35412 KB Output is correct
37 Correct 25 ms 35416 KB Output is correct
38 Correct 24 ms 35416 KB Output is correct
39 Execution timed out 3054 ms 41452 KB Time limit exceeded
40 Halted 0 ms 0 KB -