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답안 #647474

# 제출 시각 아이디 문제 언어 결과 실행 시간 메모리
647474 2022-10-02T17:09:02 Z k_balint31415 Paths (RMI21_paths) C++14
100 / 100
 318 ms 20992 KB 
#include <bits/stdc++.h>
using namespace std;
typedef long long ll;
const int c=1e5+5;


int n,k;

multiset<ll> nagy,kicsi;
ll ossz=0;

void ins(ll a){
    if(nagy.size()<k) {ossz+=a; nagy.insert(a); return;}
    ll nb=*nagy.begin();
    if(nb>=a) {kicsi.insert(a); return;}
    kicsi.insert(nb);
    ossz-=nb;
    nagy.erase(nagy.find(nb));
    ossz+=a; nagy.insert(a);
}

void rem(ll a){
    if(kicsi.find(a) != kicsi.end()){
        kicsi.erase(kicsi.find(a)); return;
    }
    if(nagy.find(a) == nagy.end()) return;
    ossz-=a;
    nagy.erase(nagy.find(a));
    if(!kicsi.empty()) {auto it=kicsi.end(); it--; ll b=*it; ossz+=b; nagy.insert(b); kicsi.erase(kicsi.find(b));}
}

vector<pair<int,ll>> adj[c];
ll dp[c][2];
ll ans[c];

ll dfs(int v, int p, ll len){
    ll maxi=0;
    for(pair<int,ll> x: adj[v]){
        if(x.first != p){
            ll cur=dfs(x.first,v,x.second);
            if(cur>dp[v][1]) dp[v][1]=cur;
            if(dp[v][1]>dp[v][0]) swap(dp[v][1],dp[v][0]);
            if(cur>maxi){
                swap(cur,maxi);
            }
            ins(cur);
        }
    }
    return maxi+len;
}

void dfs2(int v, int p){
    ans[v]=ossz;
    for(pair<int,ll> x: adj[v]){
        if(x.first != p){
            ll A=dp[x.first][0],B=dp[x.first][1];

            rem(dp[x.first][0]+x.second);
            ins(dp[x.first][0]);
            
            bool b=dp[v][0]==(dp[x.first][0]+x.second);
            rem(!b?dp[v][0]:dp[v][1]);
            ins((!b?dp[v][0]:dp[v][1])+x.second);

            dp[x.first][1]=max((!b?dp[v][0]:dp[v][1])+x.second,dp[x.first][1]);
            if(dp[x.first][0]<dp[x.first][1]) swap(dp[x.first][0],dp[x.first][1]);           

            dfs2(x.first,v);
            dp[x.first][0]=A; dp[x.first][1]=B;

            rem((!b?dp[v][0]:dp[v][1])+x.second);
            ins(!b?dp[v][0]:dp[v][1]);

            rem(dp[x.first][0]);
            ins(dp[x.first][0]+x.second);
        }
    }
}

int main(){
    ios_base::sync_with_stdio(false);
    cin.tie(0);

    cin>>n>>k;
    for(int i=1;i<n;i++){
        int a,b,val;
        cin>>a>>b>>val;
        adj[a].push_back(make_pair(b,val));
        adj[b].push_back(make_pair(a,val));
    }

    ins(dfs(1,0,0));
    dfs2(1,0);

    for(int i=1;i<=n;i++){
        cout << ans[i] << '\n';
    }
}

Compilation message

Main.cpp: In function 'void ins(ll)':
Main.cpp:13:19: warning: comparison of integer expressions of different signedness: 'std::multiset<long long int>::size_type' {aka 'long unsigned int'} and 'int' [-Wsign-compare]
   13 |     if(nagy.size()<k) {ossz+=a; nagy.insert(a); return;}
      |        ~~~~~~~~~~~^~

Subtask #1
8.0 / 8.0

# 결과 실행 시간 메모리 Grader output
1 Correct 1 ms 2644 KB Output is correct
2 Correct 2 ms 2644 KB Output is correct

Subtask #2
11.0 / 11.0

# 결과 실행 시간 메모리 Grader output
1 Correct 1 ms 2644 KB Output is correct
2 Correct 2 ms 2644 KB Output is correct
3 Correct 2 ms 2644 KB Output is correct
4 Correct 2 ms 2644 KB Output is correct
5 Correct 2 ms 2644 KB Output is correct
6 Correct 2 ms 2644 KB Output is correct
7 Correct 2 ms 2644 KB Output is correct

Subtask #3
17.0 / 17.0

# 결과 실행 시간 메모리 Grader output
1 Correct 1 ms 2644 KB Output is correct
2 Correct 2 ms 2644 KB Output is correct
3 Correct 2 ms 2644 KB Output is correct
4 Correct 2 ms 2644 KB Output is correct
5 Correct 2 ms 2644 KB Output is correct
6 Correct 2 ms 2644 KB Output is correct
7 Correct 2 ms 2644 KB Output is correct
8 Correct 3 ms 2772 KB Output is correct
9 Correct 3 ms 2772 KB Output is correct
10 Correct 5 ms 2772 KB Output is correct
11 Correct 3 ms 2772 KB Output is correct
12 Correct 3 ms 2772 KB Output is correct

Subtask #4
20.0 / 20.0

# 결과 실행 시간 메모리 Grader output
1 Correct 1 ms 2644 KB Output is correct
2 Correct 2 ms 2644 KB Output is correct
3 Correct 2 ms 2644 KB Output is correct
4 Correct 2 ms 2644 KB Output is correct
5 Correct 2 ms 2644 KB Output is correct
6 Correct 2 ms 2644 KB Output is correct
7 Correct 2 ms 2644 KB Output is correct
8 Correct 3 ms 2772 KB Output is correct
9 Correct 3 ms 2772 KB Output is correct
10 Correct 5 ms 2772 KB Output is correct
11 Correct 3 ms 2772 KB Output is correct
12 Correct 3 ms 2772 KB Output is correct
13 Correct 5 ms 2900 KB Output is correct
14 Correct 5 ms 3028 KB Output is correct
15 Correct 5 ms 2900 KB Output is correct
16 Correct 6 ms 2900 KB Output is correct
17 Correct 4 ms 2900 KB Output is correct
18 Correct 4 ms 2900 KB Output is correct
19 Correct 6 ms 2900 KB Output is correct

Subtask #5
12.0 / 12.0

# 결과 실행 시간 메모리 Grader output
1 Correct 280 ms 15868 KB Output is correct
2 Correct 286 ms 19960 KB Output is correct
3 Correct 208 ms 17892 KB Output is correct
4 Correct 278 ms 17856 KB Output is correct
5 Correct 291 ms 18780 KB Output is correct
6 Correct 274 ms 17768 KB Output is correct

Subtask #6
32.0 / 32.0

# 결과 실행 시간 메모리 Grader output
1 Correct 1 ms 2644 KB Output is correct
2 Correct 2 ms 2644 KB Output is correct
3 Correct 2 ms 2644 KB Output is correct
4 Correct 2 ms 2644 KB Output is correct
5 Correct 2 ms 2644 KB Output is correct
6 Correct 2 ms 2644 KB Output is correct
7 Correct 2 ms 2644 KB Output is correct
8 Correct 3 ms 2772 KB Output is correct
9 Correct 3 ms 2772 KB Output is correct
10 Correct 5 ms 2772 KB Output is correct
11 Correct 3 ms 2772 KB Output is correct
12 Correct 3 ms 2772 KB Output is correct
13 Correct 5 ms 2900 KB Output is correct
14 Correct 5 ms 3028 KB Output is correct
15 Correct 5 ms 2900 KB Output is correct
16 Correct 6 ms 2900 KB Output is correct
17 Correct 4 ms 2900 KB Output is correct
18 Correct 4 ms 2900 KB Output is correct
19 Correct 6 ms 2900 KB Output is correct
20 Correct 280 ms 15868 KB Output is correct
21 Correct 286 ms 19960 KB Output is correct
22 Correct 208 ms 17892 KB Output is correct
23 Correct 278 ms 17856 KB Output is correct
24 Correct 291 ms 18780 KB Output is correct
25 Correct 274 ms 17768 KB Output is correct
26 Correct 318 ms 18424 KB Output is correct
27 Correct 306 ms 19980 KB Output is correct
28 Correct 304 ms 20416 KB Output is correct
29 Correct 216 ms 17996 KB Output is correct
30 Correct 307 ms 18256 KB Output is correct
31 Correct 293 ms 17612 KB Output is correct
32 Correct 315 ms 19036 KB Output is correct
33 Correct 296 ms 18328 KB Output is correct
34 Correct 204 ms 18036 KB Output is correct
35 Correct 316 ms 18224 KB Output is correct
36 Correct 285 ms 20992 KB Output is correct