oj.uz

Submission #964942

# Submission time Handle Problem Language Result Execution time Memory
964942 2024-04-17T18:15:55 Z Younis_Dwai Race (IOI11_race) C++14
21 / 100
 3000 ms 41248 KB 
#include "race.h"
#include <vector>
#define F first
#define S second
#define pb push_back
using namespace std ;
const int MN=1e6+1;
int res,k;
vector<int> dp(MN),sz(MN);
vector<bool> vis(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,800);
     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 15 ms 34652 KB Output is correct
2 Correct 8 ms 34652 KB Output is correct
3 Correct 13 ms 34652 KB Output is correct
4 Correct 9 ms 34652 KB Output is correct
5 Correct 8 ms 34652 KB Output is correct
6 Correct 8 ms 34652 KB Output is correct
7 Correct 8 ms 34652 KB Output is correct
8 Correct 9 ms 34652 KB Output is correct
9 Correct 8 ms 34652 KB Output is correct
10 Correct 9 ms 34496 KB Output is correct
11 Correct 9 ms 34652 KB Output is correct
12 Correct 8 ms 34648 KB Output is correct
13 Correct 8 ms 34652 KB Output is correct
14 Correct 10 ms 34648 KB Output is correct
15 Correct 9 ms 34652 KB Output is correct
16 Correct 8 ms 34652 KB Output is correct
17 Correct 8 ms 34904 KB Output is correct
18 Correct 8 ms 34532 KB Output is correct

Subtask #2
12.0 / 12.0

# Verdict Execution time Memory Grader output
1 Correct 15 ms 34652 KB Output is correct
2 Correct 8 ms 34652 KB Output is correct
3 Correct 13 ms 34652 KB Output is correct
4 Correct 9 ms 34652 KB Output is correct
5 Correct 8 ms 34652 KB Output is correct
6 Correct 8 ms 34652 KB Output is correct
7 Correct 8 ms 34652 KB Output is correct
8 Correct 9 ms 34652 KB Output is correct
9 Correct 8 ms 34652 KB Output is correct
10 Correct 9 ms 34496 KB Output is correct
11 Correct 9 ms 34652 KB Output is correct
12 Correct 8 ms 34648 KB Output is correct
13 Correct 8 ms 34652 KB Output is correct
14 Correct 10 ms 34648 KB Output is correct
15 Correct 9 ms 34652 KB Output is correct
16 Correct 8 ms 34652 KB Output is correct
17 Correct 8 ms 34904 KB Output is correct
18 Correct 8 ms 34532 KB Output is correct
19 Correct 8 ms 34648 KB Output is correct
20 Correct 8 ms 34652 KB Output is correct
21 Correct 9 ms 34652 KB Output is correct
22 Correct 9 ms 34516 KB Output is correct
23 Correct 9 ms 34680 KB Output is correct
24 Correct 9 ms 34652 KB Output is correct
25 Correct 9 ms 34552 KB Output is correct
26 Correct 9 ms 34652 KB Output is correct
27 Correct 11 ms 34544 KB Output is correct
28 Correct 8 ms 34652 KB Output is correct
29 Correct 9 ms 34652 KB Output is correct
30 Correct 11 ms 34652 KB Output is correct
31 Correct 11 ms 34724 KB Output is correct
32 Correct 9 ms 34652 KB Output is correct
33 Correct 10 ms 34648 KB Output is correct
34 Correct 10 ms 34724 KB Output is correct
35 Correct 11 ms 34652 KB Output is correct
36 Correct 11 ms 34736 KB Output is correct
37 Correct 12 ms 34536 KB Output is correct
38 Correct 11 ms 34716 KB Output is correct

Subtask #3
0 / 22.0

# Verdict Execution time Memory Grader output
1 Correct 15 ms 34652 KB Output is correct
2 Correct 8 ms 34652 KB Output is correct
3 Correct 13 ms 34652 KB Output is correct
4 Correct 9 ms 34652 KB Output is correct
5 Correct 8 ms 34652 KB Output is correct
6 Correct 8 ms 34652 KB Output is correct
7 Correct 8 ms 34652 KB Output is correct
8 Correct 9 ms 34652 KB Output is correct
9 Correct 8 ms 34652 KB Output is correct
10 Correct 9 ms 34496 KB Output is correct
11 Correct 9 ms 34652 KB Output is correct
12 Correct 8 ms 34648 KB Output is correct
13 Correct 8 ms 34652 KB Output is correct
14 Correct 10 ms 34648 KB Output is correct
15 Correct 9 ms 34652 KB Output is correct
16 Correct 8 ms 34652 KB Output is correct
17 Correct 8 ms 34904 KB Output is correct
18 Correct 8 ms 34532 KB Output is correct
19 Correct 212 ms 38692 KB Output is correct
20 Correct 194 ms 38692 KB Output is correct
21 Correct 189 ms 38716 KB Output is correct
22 Correct 146 ms 38780 KB Output is correct
23 Correct 71 ms 38948 KB Output is correct
24 Correct 52 ms 38736 KB Output is correct
25 Execution timed out 3022 ms 41248 KB Time limit exceeded
26 Halted 0 ms 0 KB -

Subtask #4
0 / 57.0

# Verdict Execution time Memory Grader output
1 Correct 15 ms 34652 KB Output is correct
2 Correct 8 ms 34652 KB Output is correct
3 Correct 13 ms 34652 KB Output is correct
4 Correct 9 ms 34652 KB Output is correct
5 Correct 8 ms 34652 KB Output is correct
6 Correct 8 ms 34652 KB Output is correct
7 Correct 8 ms 34652 KB Output is correct
8 Correct 9 ms 34652 KB Output is correct
9 Correct 8 ms 34652 KB Output is correct
10 Correct 9 ms 34496 KB Output is correct
11 Correct 9 ms 34652 KB Output is correct
12 Correct 8 ms 34648 KB Output is correct
13 Correct 8 ms 34652 KB Output is correct
14 Correct 10 ms 34648 KB Output is correct
15 Correct 9 ms 34652 KB Output is correct
16 Correct 8 ms 34652 KB Output is correct
17 Correct 8 ms 34904 KB Output is correct
18 Correct 8 ms 34532 KB Output is correct
19 Correct 8 ms 34648 KB Output is correct
20 Correct 8 ms 34652 KB Output is correct
21 Correct 9 ms 34652 KB Output is correct
22 Correct 9 ms 34516 KB Output is correct
23 Correct 9 ms 34680 KB Output is correct
24 Correct 9 ms 34652 KB Output is correct
25 Correct 9 ms 34552 KB Output is correct
26 Correct 9 ms 34652 KB Output is correct
27 Correct 11 ms 34544 KB Output is correct
28 Correct 8 ms 34652 KB Output is correct
29 Correct 9 ms 34652 KB Output is correct
30 Correct 11 ms 34652 KB Output is correct
31 Correct 11 ms 34724 KB Output is correct
32 Correct 9 ms 34652 KB Output is correct
33 Correct 10 ms 34648 KB Output is correct
34 Correct 10 ms 34724 KB Output is correct
35 Correct 11 ms 34652 KB Output is correct
36 Correct 11 ms 34736 KB Output is correct
37 Correct 12 ms 34536 KB Output is correct
38 Correct 11 ms 34716 KB Output is correct
39 Correct 212 ms 38692 KB Output is correct
40 Correct 194 ms 38692 KB Output is correct
41 Correct 189 ms 38716 KB Output is correct
42 Correct 146 ms 38780 KB Output is correct
43 Correct 71 ms 38948 KB Output is correct
44 Correct 52 ms 38736 KB Output is correct
45 Execution timed out 3022 ms 41248 KB Time limit exceeded
46 Halted 0 ms 0 KB -