oj.uz

답안 #1086242

# 제출 시각 아이디 문제 언어 결과 실행 시간 메모리
1086242 2024-09-09T20:18:23 Z rayan_bd 경주 (Race) (IOI11_race) C++17
43 / 100
 3000 ms 40272 KB 
#include <bits/stdc++.h>

using namespace std;


#define getar(ar,n) for(int i=0;i<n;++i) cin>>ar[i]
#define show(n) cout<<n<<'\n'
#define aint(v) v.begin(), v.end()
#define br cout<<"\n"
#define pb push_back
#define nl '\n'
#define yes cout<<"YES\n"
#define no cout<<"NO\n"
#define ret return
#define ll long long
#define ld long double
#define sza(x) ((int)x.size())

const int mxNN = 2e5+1000;
const int mxN = 1e6 + 500;
const int MOD = 1e9 + 7;
const int INF = 1e9;
const ld EPS = 1e-9;

vector<pair<int,int>> adj[mxNN];
vector<int> dp(mxN,INF);
vector<bool> ok(mxNN,0);
int sz[mxNN],K,ans=INF;

void dfs(int node,int par){
    sz[node]=1;
    for(auto it:adj[node]){
        if(it.first==par||ok[node]) continue;
        dfs(it.first,node);
        sz[node]+=sz[it.first];
    }
}

int find(int node,int par,int n){
    for(auto it:adj[node]){
        if(it.first==par||ok[node]) continue;
        if(sz[it.first]*2>n){
            return find(it.first,node,n);
        }
    }
    return node;
}



void path_finder(int u,int par,int h,int tot){
    if(tot>K) return;
    ans=min(ans,dp[K-tot]+h);
    for(auto it:adj[u]){
        if(it.first!=par&&!ok[it.first]){
            path_finder(it.first,u,h+1,tot+it.second);
        }
    }
}

void path_optimize(int u,int par,int h,int tot){
    if(tot>K) return;
    dp[tot]=min(dp[tot],h);
    for(auto it:adj[u]){
        if(it.first!=par&&!ok[it.first]){
            path_optimize(it.first,u,h+1,tot+it.second);
        }
    }
}

void dp_reset(int u,int par,int tot){
    if(tot>K) return;
    dp[tot]=INF;
    for(auto it:adj[u]){
        if(it.first!=par&&!ok[it.first]){
            dp_reset(it.first,u,tot+it.second);
        }
    }
}

void decompose(int u){
    dfs(u,-1);
    int cen=find(u,-1,sz[u]);
    dp[0]=0;
    for(auto it:adj[cen]){
        if(!ok[it.first]){
            path_finder(it.first,cen,1,it.second);
            path_optimize(it.first,cen,1,it.second);
        }
    }
    dp_reset(cen,-1,0);
    ok[cen]=1;
    for(auto it:adj[cen]){
        if(!ok[it.first]){
            decompose(it.first);
        }
    }
}

int best_path(int n,int k,int h[][2],int l[]){
    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]});
    }
    K=k;
    decompose(0);
    return ans>=INF?-1:ans;
}

Subtask #1
9.0 / 9.0

# 결과 실행 시간 메모리 Grader output
1 Correct 4 ms 9052 KB Output is correct
2 Correct 3 ms 9016 KB Output is correct
3 Correct 4 ms 9120 KB Output is correct
4 Correct 4 ms 9052 KB Output is correct
5 Correct 4 ms 9052 KB Output is correct
6 Correct 4 ms 9048 KB Output is correct
7 Correct 4 ms 9052 KB Output is correct
8 Correct 4 ms 9052 KB Output is correct
9 Correct 4 ms 9052 KB Output is correct
10 Correct 4 ms 8992 KB Output is correct
11 Correct 4 ms 9048 KB Output is correct
12 Correct 4 ms 9052 KB Output is correct
13 Correct 4 ms 9132 KB Output is correct
14 Correct 4 ms 9052 KB Output is correct
15 Correct 4 ms 9052 KB Output is correct
16 Correct 3 ms 9120 KB Output is correct
17 Correct 4 ms 9052 KB Output is correct
18 Correct 3 ms 9052 KB Output is correct

Subtask #2
12.0 / 12.0

# 결과 실행 시간 메모리 Grader output
1 Correct 4 ms 9052 KB Output is correct
2 Correct 3 ms 9016 KB Output is correct
3 Correct 4 ms 9120 KB Output is correct
4 Correct 4 ms 9052 KB Output is correct
5 Correct 4 ms 9052 KB Output is correct
6 Correct 4 ms 9048 KB Output is correct
7 Correct 4 ms 9052 KB Output is correct
8 Correct 4 ms 9052 KB Output is correct
9 Correct 4 ms 9052 KB Output is correct
10 Correct 4 ms 8992 KB Output is correct
11 Correct 4 ms 9048 KB Output is correct
12 Correct 4 ms 9052 KB Output is correct
13 Correct 4 ms 9132 KB Output is correct
14 Correct 4 ms 9052 KB Output is correct
15 Correct 4 ms 9052 KB Output is correct
16 Correct 3 ms 9120 KB Output is correct
17 Correct 4 ms 9052 KB Output is correct
18 Correct 3 ms 9052 KB Output is correct
19 Correct 3 ms 9052 KB Output is correct
20 Correct 4 ms 9112 KB Output is correct
21 Correct 4 ms 9048 KB Output is correct
22 Correct 5 ms 8980 KB Output is correct
23 Correct 4 ms 9048 KB Output is correct
24 Correct 4 ms 9048 KB Output is correct
25 Correct 4 ms 9052 KB Output is correct
26 Correct 4 ms 9052 KB Output is correct
27 Correct 4 ms 9136 KB Output is correct
28 Correct 4 ms 9052 KB Output is correct
29 Correct 5 ms 9196 KB Output is correct
30 Correct 5 ms 9048 KB Output is correct
31 Correct 4 ms 9052 KB Output is correct
32 Correct 4 ms 9052 KB Output is correct
33 Correct 4 ms 8984 KB Output is correct
34 Correct 4 ms 9052 KB Output is correct
35 Correct 4 ms 9052 KB Output is correct
36 Correct 4 ms 9052 KB Output is correct
37 Correct 4 ms 9052 KB Output is correct
38 Correct 4 ms 9048 KB Output is correct

Subtask #3
22.0 / 22.0

# 결과 실행 시간 메모리 Grader output
1 Correct 4 ms 9052 KB Output is correct
2 Correct 3 ms 9016 KB Output is correct
3 Correct 4 ms 9120 KB Output is correct
4 Correct 4 ms 9052 KB Output is correct
5 Correct 4 ms 9052 KB Output is correct
6 Correct 4 ms 9048 KB Output is correct
7 Correct 4 ms 9052 KB Output is correct
8 Correct 4 ms 9052 KB Output is correct
9 Correct 4 ms 9052 KB Output is correct
10 Correct 4 ms 8992 KB Output is correct
11 Correct 4 ms 9048 KB Output is correct
12 Correct 4 ms 9052 KB Output is correct
13 Correct 4 ms 9132 KB Output is correct
14 Correct 4 ms 9052 KB Output is correct
15 Correct 4 ms 9052 KB Output is correct
16 Correct 3 ms 9120 KB Output is correct
17 Correct 4 ms 9052 KB Output is correct
18 Correct 3 ms 9052 KB Output is correct
19 Correct 86 ms 15500 KB Output is correct
20 Correct 88 ms 15444 KB Output is correct
21 Correct 93 ms 15708 KB Output is correct
22 Correct 82 ms 15692 KB Output is correct
23 Correct 49 ms 15960 KB Output is correct
24 Correct 37 ms 15708 KB Output is correct
25 Correct 95 ms 19928 KB Output is correct
26 Correct 82 ms 24400 KB Output is correct
27 Correct 123 ms 22708 KB Output is correct
28 Correct 159 ms 40272 KB Output is correct
29 Correct 163 ms 38996 KB Output is correct
30 Correct 122 ms 22608 KB Output is correct
31 Correct 121 ms 22488 KB Output is correct
32 Correct 135 ms 22608 KB Output is correct
33 Correct 139 ms 21612 KB Output is correct
34 Correct 114 ms 22284 KB Output is correct

Subtask #4
0 / 57.0

# 결과 실행 시간 메모리 Grader output
1 Correct 4 ms 9052 KB Output is correct
2 Correct 3 ms 9016 KB Output is correct
3 Correct 4 ms 9120 KB Output is correct
4 Correct 4 ms 9052 KB Output is correct
5 Correct 4 ms 9052 KB Output is correct
6 Correct 4 ms 9048 KB Output is correct
7 Correct 4 ms 9052 KB Output is correct
8 Correct 4 ms 9052 KB Output is correct
9 Correct 4 ms 9052 KB Output is correct
10 Correct 4 ms 8992 KB Output is correct
11 Correct 4 ms 9048 KB Output is correct
12 Correct 4 ms 9052 KB Output is correct
13 Correct 4 ms 9132 KB Output is correct
14 Correct 4 ms 9052 KB Output is correct
15 Correct 4 ms 9052 KB Output is correct
16 Correct 3 ms 9120 KB Output is correct
17 Correct 4 ms 9052 KB Output is correct
18 Correct 3 ms 9052 KB Output is correct
19 Correct 3 ms 9052 KB Output is correct
20 Correct 4 ms 9112 KB Output is correct
21 Correct 4 ms 9048 KB Output is correct
22 Correct 5 ms 8980 KB Output is correct
23 Correct 4 ms 9048 KB Output is correct
24 Correct 4 ms 9048 KB Output is correct
25 Correct 4 ms 9052 KB Output is correct
26 Correct 4 ms 9052 KB Output is correct
27 Correct 4 ms 9136 KB Output is correct
28 Correct 4 ms 9052 KB Output is correct
29 Correct 5 ms 9196 KB Output is correct
30 Correct 5 ms 9048 KB Output is correct
31 Correct 4 ms 9052 KB Output is correct
32 Correct 4 ms 9052 KB Output is correct
33 Correct 4 ms 8984 KB Output is correct
34 Correct 4 ms 9052 KB Output is correct
35 Correct 4 ms 9052 KB Output is correct
36 Correct 4 ms 9052 KB Output is correct
37 Correct 4 ms 9052 KB Output is correct
38 Correct 4 ms 9048 KB Output is correct
39 Correct 86 ms 15500 KB Output is correct
40 Correct 88 ms 15444 KB Output is correct
41 Correct 93 ms 15708 KB Output is correct
42 Correct 82 ms 15692 KB Output is correct
43 Correct 49 ms 15960 KB Output is correct
44 Correct 37 ms 15708 KB Output is correct
45 Correct 95 ms 19928 KB Output is correct
46 Correct 82 ms 24400 KB Output is correct
47 Correct 123 ms 22708 KB Output is correct
48 Correct 159 ms 40272 KB Output is correct
49 Correct 163 ms 38996 KB Output is correct
50 Correct 122 ms 22608 KB Output is correct
51 Correct 121 ms 22488 KB Output is correct
52 Correct 135 ms 22608 KB Output is correct
53 Correct 139 ms 21612 KB Output is correct
54 Correct 114 ms 22284 KB Output is correct
55 Correct 9 ms 9564 KB Output is correct
56 Correct 15 ms 9636 KB Output is correct
57 Correct 52 ms 15708 KB Output is correct
58 Execution timed out 3063 ms 15480 KB Time limit exceeded
59 Halted 0 ms 0 KB -