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답안 #527507

# 제출 시각 아이디 문제 언어 결과 실행 시간 메모리
527507 2022-02-17T13:54:42 Z zaneyu Parkovi (COCI22_parkovi) C++14
110 / 110
 1287 ms 54152 KB 
/*input
2 1 
1 2 3
*/ 
#include<bits/stdc++.h>
#include <ext/pb_ds/assoc_container.hpp>
#include <ext/pb_ds/tree_policy.hpp>
using namespace std;
using namespace __gnu_pbds;

//#pragma GCC optimize("unroll-loops,no-stack-protector")
//order_of_key #of elements less than x
// find_by_order kth element
using ll = long long;
using ld = long double;
using pii = pair<ll,ll>;
typedef tree<int, null_type, less<int>, rb_tree_tag, tree_order_statistics_node_update> indexed_set;
#define f first
#define s second
#define pb push_back
#define REP(i,n) for(int i=0;i<n;i++)
#define REP1(i,n) for(int i=1;i<=n;i++)
#define FILL(n,x) memset(n,x,sizeof(n))
#define ALL(_a) _a.begin(),_a.end()
#define sz(x) (int)x.size()
#define SORT_UNIQUE(c) (sort(c.begin(),c.end()), c.resize(distance(c.begin(),unique(c.begin(),c.end()))))
#define MP make_pair
const ll INF64=4e17;
const int INF=0x3f3f3f3f;
const ll MOD=1e9+7;
const ld PI=acos(-1);
const ld eps=1e-9;
#define lowb(x) x&(-x)
#define MNTO(x,y) x=min(x,(__typeof__(x))y)
#define MXTO(x,y) x=max(x,(__typeof__(x))y)
template<typename T1,typename T2>
ostream& operator<<(ostream& out,pair<T1,T2> P){
    out<<P.f<<' '<<P.s;
    return out;
}
template<typename T>
ostream& operator<<(ostream& out,vector<T> V){
    REP(i,sz(V)) out<<V[i]+1<<((i!=sz(V)-1)?" ":"");
    return out;
}
ll mult(ll a,ll b){
    return ((a%MOD)*(b%MOD))%MOD;
}
ll mypow(ll a,ll b){
    if(b<=0) return 1;
    ll res=1LL;
    while(b){
        if(b&1) res=mult(res,a);
        a=mult(a,a);
        b>>=1;
    }
    return res;
}
const int maxn=1e6+5;
vector<pii> v[maxn];
ll k;
vector<int> anss;
pii dfs(int u,int p,ll pv){
    ll mx=0,mx2=-INF64;
    for(auto x:v[u]){
        if(x.f!=p){
            pii z=dfs(x.f,u,x.s);
            if(!z.f){
                MXTO(mx,z.s);
            }
            else{
                MXTO(mx2,z.s);
            }
        }
    }
    pii ans;
    if(mx2>=mx){
        ans.f=1;
        ans.s=(mx2-pv);
    }
    else{
        ans.f=0;
        ans.s=(mx+pv);
    }
    if(!ans.f and ans.s>k){
       	anss.pb(u);
        ans.f=1;
        ans.s=k-pv;
    }
    if(ans.f and ans.s<0) ans.f=0,ans.s=0;
    return ans;
}
bool in[maxn];
int main(){
    int n,z;
    cin>>n>>z;
    REP(i,n-1){
        int a,b,c;
        cin>>a>>b>>c;
        --a;
        --b;
        v[a].pb({b,c});
        v[b].pb({a,c});
    }
    ll l=0,r=INF64;
    while(l<r){
        ll mid=(l+r)/2;
        k=mid;
        dfs(0,-1,INF64);
        if(sz(anss)<=z) r=mid;
        else l=mid+1;
        anss.clear();
    }
    k=l;
    dfs(0,-1,INF64);
    cout<<l<<'\n';
    for(int x:anss) in[x]=1;
    int p=0;
    while(sz(anss)<z){
    	while(in[p]) ++p;
    	anss.pb(p);
    	++p;
    }
    cout<<anss;
}

Subtask #1
10.0 / 10.0

# 결과 실행 시간 메모리 Grader output
1 Correct 14 ms 23756 KB Output is correct
2 Correct 13 ms 23756 KB Output is correct
3 Correct 14 ms 23764 KB Output is correct
4 Correct 15 ms 23780 KB Output is correct
5 Correct 12 ms 23756 KB Output is correct
6 Correct 16 ms 23756 KB Output is correct
7 Correct 14 ms 23724 KB Output is correct
8 Correct 13 ms 23756 KB Output is correct
9 Correct 14 ms 23788 KB Output is correct
10 Correct 15 ms 23676 KB Output is correct
11 Correct 16 ms 23756 KB Output is correct
12 Correct 15 ms 23788 KB Output is correct
13 Correct 12 ms 23720 KB Output is correct
14 Correct 12 ms 23784 KB Output is correct

Subtask #2
10.0 / 10.0

# 결과 실행 시간 메모리 Grader output
1 Correct 403 ms 49856 KB Output is correct
2 Correct 521 ms 50144 KB Output is correct
3 Correct 406 ms 37896 KB Output is correct
4 Correct 1257 ms 37256 KB Output is correct
5 Correct 1144 ms 36740 KB Output is correct
6 Correct 1223 ms 36956 KB Output is correct
7 Correct 1142 ms 35716 KB Output is correct
8 Correct 1145 ms 34856 KB Output is correct
9 Correct 1287 ms 33512 KB Output is correct
10 Correct 1201 ms 37060 KB Output is correct
11 Correct 912 ms 37996 KB Output is correct
12 Correct 795 ms 38256 KB Output is correct
13 Correct 914 ms 39764 KB Output is correct
14 Correct 768 ms 37180 KB Output is correct
15 Correct 786 ms 36752 KB Output is correct
16 Correct 813 ms 38120 KB Output is correct
17 Correct 826 ms 37492 KB Output is correct

Subtask #3
30.0 / 30.0

# 결과 실행 시간 메모리 Grader output
1 Correct 456 ms 51996 KB Output is correct
2 Correct 455 ms 51600 KB Output is correct
3 Correct 428 ms 49972 KB Output is correct
4 Correct 421 ms 50008 KB Output is correct
5 Correct 481 ms 53984 KB Output is correct
6 Correct 503 ms 53072 KB Output is correct
7 Correct 500 ms 54152 KB Output is correct
8 Correct 455 ms 52036 KB Output is correct
9 Correct 445 ms 51780 KB Output is correct
10 Correct 413 ms 49092 KB Output is correct
11 Correct 426 ms 46900 KB Output is correct
12 Correct 490 ms 51292 KB Output is correct
13 Correct 499 ms 50764 KB Output is correct
14 Correct 463 ms 49724 KB Output is correct
15 Correct 389 ms 47812 KB Output is correct
16 Correct 376 ms 46792 KB Output is correct
17 Correct 395 ms 46788 KB Output is correct
18 Correct 397 ms 47816 KB Output is correct
19 Correct 425 ms 49376 KB Output is correct
20 Correct 438 ms 49732 KB Output is correct
21 Correct 421 ms 48820 KB Output is correct

Subtask #4
60.0 / 60.0

# 결과 실행 시간 메모리 Grader output
1 Correct 14 ms 23756 KB Output is correct
2 Correct 13 ms 23756 KB Output is correct
3 Correct 14 ms 23764 KB Output is correct
4 Correct 15 ms 23780 KB Output is correct
5 Correct 12 ms 23756 KB Output is correct
6 Correct 16 ms 23756 KB Output is correct
7 Correct 14 ms 23724 KB Output is correct
8 Correct 13 ms 23756 KB Output is correct
9 Correct 14 ms 23788 KB Output is correct
10 Correct 15 ms 23676 KB Output is correct
11 Correct 16 ms 23756 KB Output is correct
12 Correct 15 ms 23788 KB Output is correct
13 Correct 12 ms 23720 KB Output is correct
14 Correct 12 ms 23784 KB Output is correct
15 Correct 403 ms 49856 KB Output is correct
16 Correct 521 ms 50144 KB Output is correct
17 Correct 406 ms 37896 KB Output is correct
18 Correct 1257 ms 37256 KB Output is correct
19 Correct 1144 ms 36740 KB Output is correct
20 Correct 1223 ms 36956 KB Output is correct
21 Correct 1142 ms 35716 KB Output is correct
22 Correct 1145 ms 34856 KB Output is correct
23 Correct 1287 ms 33512 KB Output is correct
24 Correct 1201 ms 37060 KB Output is correct
25 Correct 912 ms 37996 KB Output is correct
26 Correct 795 ms 38256 KB Output is correct
27 Correct 914 ms 39764 KB Output is correct
28 Correct 768 ms 37180 KB Output is correct
29 Correct 786 ms 36752 KB Output is correct
30 Correct 813 ms 38120 KB Output is correct
31 Correct 826 ms 37492 KB Output is correct
32 Correct 456 ms 51996 KB Output is correct
33 Correct 455 ms 51600 KB Output is correct
34 Correct 428 ms 49972 KB Output is correct
35 Correct 421 ms 50008 KB Output is correct
36 Correct 481 ms 53984 KB Output is correct
37 Correct 503 ms 53072 KB Output is correct
38 Correct 500 ms 54152 KB Output is correct
39 Correct 455 ms 52036 KB Output is correct
40 Correct 445 ms 51780 KB Output is correct
41 Correct 413 ms 49092 KB Output is correct
42 Correct 426 ms 46900 KB Output is correct
43 Correct 490 ms 51292 KB Output is correct
44 Correct 499 ms 50764 KB Output is correct
45 Correct 463 ms 49724 KB Output is correct
46 Correct 389 ms 47812 KB Output is correct
47 Correct 376 ms 46792 KB Output is correct
48 Correct 395 ms 46788 KB Output is correct
49 Correct 397 ms 47816 KB Output is correct
50 Correct 425 ms 49376 KB Output is correct
51 Correct 438 ms 49732 KB Output is correct
52 Correct 421 ms 48820 KB Output is correct
53 Correct 1034 ms 33392 KB Output is correct
54 Correct 1134 ms 33604 KB Output is correct
55 Correct 1173 ms 33996 KB Output is correct
56 Correct 1114 ms 34236 KB Output is correct
57 Correct 1165 ms 35044 KB Output is correct
58 Correct 1068 ms 33436 KB Output is correct
59 Correct 1250 ms 36940 KB Output is correct
60 Correct 1131 ms 33976 KB Output is correct
61 Correct 1008 ms 33136 KB Output is correct
62 Correct 1006 ms 34784 KB Output is correct
63 Correct 1175 ms 34008 KB Output is correct
64 Correct 1066 ms 36412 KB Output is correct
65 Correct 1202 ms 33760 KB Output is correct
66 Correct 1103 ms 34852 KB Output is correct
67 Correct 1045 ms 33136 KB Output is correct
68 Correct 1254 ms 36916 KB Output is correct
69 Correct 436 ms 47816 KB Output is correct
70 Correct 400 ms 46656 KB Output is correct
71 Correct 480 ms 50056 KB Output is correct
72 Correct 355 ms 33060 KB Output is correct
73 Correct 329 ms 33704 KB Output is correct
74 Correct 344 ms 35432 KB Output is correct
75 Correct 805 ms 35208 KB Output is correct
76 Correct 856 ms 35596 KB Output is correct
77 Correct 798 ms 34980 KB Output is correct
78 Correct 786 ms 35820 KB Output is correct