답안 #315361

#	제출 시각	아이디	문제	언어	결과	실행 시간	메모리
315361	2020-10-22T15:41:24 Z	jainbot27	Construction of Highway (JOI18_construction)	C++17	100 / 100	457 ms	21752 KB

construction

#include <bits/stdc++.h>
using namespace std;

#define f first
#define s second
#define pb push_back
#define ar array
#define all(x) x.begin(), x.end()
#define siz(x) (int)x.size()

#define FOR(x, y, z) for(int x = (y); x < (z); x++)
#define ROF(x, z, y) for(int x = (y-1); x >= (z); x--)
#define F0R(x, z) FOR(x, 0, z)
#define R0F(x, z) ROF(x, 0, z)
#define trav(x, y) for(auto&x:y)

using ll = long long;
using vi = vector<int>;
using vl = vector<long long>;
using pii = pair<int, int>;
using vpii = vector<pair<int, int>>;

template<class T> inline bool ckmin(T&a, T b) {return b < a ? a = b, 1 : 0;}
template<class T> inline bool ckmax(T&a, T b) {return b > a ? a = b, 1 : 0;}
mt19937 rng(chrono::steady_clock::now().time_since_epoch().count());

const char nl = '\n';
const int mxN = 1e5 + 10;
const int MOD = 1e9 + 7;
const long long infLL = 1e18;

const int inf = 1e9;


int n, a[mxN], par[mxN], heavy[mxN], depth[mxN], root[mxN]; 
pii e[mxN];
vi adj[mxN];
vpii vals[mxN];
typedef int node;
struct BIT{
    vector<node> bit;
    vpii ops;
    int n;
    void init(int x){
        n=x+1;
        bit.assign(n + 1,0);
    }
    node sum(int r){
        node ret = 0;
        for(r++; r ; r -= r & -r){
            ret += bit[r];
        }
        return ret;
    }
    node sum(int l, int r){
        return sum(r) - sum(l-1);
    }
    void add(int idx, node delta){
        ops.pb({idx, delta});
        for(idx++; idx < n; idx += idx & -idx){
            bit[idx] += delta;
        }
    }
    void clear(){
        trav(x, ops){
            add(x.f, -x.s);
        }
        ops.clear();
    }
};

BIT B;
int dfs(int u, int p){
    int sz = 1, mxSub = 0;
    trav(v, adj[u]){
        if(v == p)
            continue;
        par[v] = u;
        depth[v] = depth[u] + 1;
        int d = dfs(v, u);
        if(ckmax(mxSub, d)) heavy[u] = v;
        sz += d;
    }
    return sz;
}
ll query(int v){
    int r = root[v], tot = depth[v]-depth[r]+1;
    vpii tmp;
    R0F(i, siz(vals[r])){
        auto cur = vals[r][i];
        if(cur.s >= tot){
            tmp.pb({cur.f, tot});
            break;
        }
        else{
            tot -= cur.s;
            tmp.pb(cur);
        }
    }
    reverse(all(tmp));
    ll res = 0;
    trav(x, tmp){
        res += (ll)x.s * B.sum(x.f-1);
        B.add(x.f, x.s);
    }
    return res;
}
ll queryAns(int v){
    ll ans = 0;
    B.clear();
    for(; v != -1; v = par[root[v]]) ans+= query(v);
    return ans;
}
void upd(int v, int val){
    int r = root[v], tot = depth[v] - depth[r] + 1;
    int tmp=tot;
    while(vals[r].back().s < tot) {
        tot -= vals[r].back().s;
        vals[r].pop_back();
    }
    vals[r].back().s -= tot;
    if(vals[r].back().s == 0) vals[r].pop_back();
    vals[r].pb({val, tmp});
}
void updAns(int v, int val){
    for(; v != -1; v = par[root[v]]) upd(v, val);
}
void compress(){
    map<int, int> m;
    F0R(i, n) m[a[i]]=0;
    int xx = 0;
    trav(xd, m) xd.s = xx ++;
    F0R(i, n) a[i] = m[a[i]];
}
int32_t main(){
    ios_base::sync_with_stdio(0); cin.tie(0);
    B.init(mxN);
    cin >> n;
    F0R(i, n) cin >> a[i];
    compress();
    F0R(i, n-1){
        cin >> e[i].f >> e[i].s;
        e[i].f--; e[i].s--;
        adj[e[i].f].pb(e[i].s);
        adj[e[i].s].pb(e[i].f);
    }
    F0R(i, n) heavy[i] = -1;
    par[0] = -1; depth[0] = 0;
    dfs(0, -1);
    F0R(i, n){
        if(par[i] == -1 || heavy[par[i]] != i){
            for(int j = i; j != -1; j = heavy[j]){
                root[j] = i;
                vals[i].pb({0, 1});
            }
        }
    }
    updAns(0, a[0]);
    F0R(i, n-1){
        cout << queryAns(e[i].f) << nl;
        updAns(e[i].s, a[e[i].s]);
    }
    return 0;
}

Subtask #1
7.0 / 7.0

#	결과	실행 시간	메모리	Grader output
1	Correct	3 ms	5504 KB	Output is correct
2	Correct	3 ms	5504 KB	Output is correct
3	Correct	4 ms	5504 KB	Output is correct
4	Correct	4 ms	5504 KB	Output is correct
5	Correct	5 ms	5504 KB	Output is correct
6	Correct	5 ms	5504 KB	Output is correct
7	Correct	4 ms	5504 KB	Output is correct
8	Correct	4 ms	5504 KB	Output is correct
9	Correct	4 ms	5632 KB	Output is correct
10	Correct	4 ms	5504 KB	Output is correct
11	Correct	4 ms	5504 KB	Output is correct
12	Correct	4 ms	5504 KB	Output is correct
13	Correct	4 ms	5504 KB	Output is correct
14	Correct	4 ms	5504 KB	Output is correct
15	Correct	4 ms	5504 KB	Output is correct
16	Correct	5 ms	5504 KB	Output is correct
17	Correct	5 ms	5504 KB	Output is correct
18	Correct	5 ms	5504 KB	Output is correct
19	Correct	4 ms	5504 KB	Output is correct
20	Correct	4 ms	5504 KB	Output is correct
21	Correct	4 ms	5504 KB	Output is correct
22	Correct	4 ms	5504 KB	Output is correct
23	Correct	4 ms	5504 KB	Output is correct
24	Correct	4 ms	5504 KB	Output is correct
25	Correct	4 ms	5504 KB	Output is correct
26	Correct	4 ms	5504 KB	Output is correct
27	Correct	4 ms	5504 KB	Output is correct
28	Correct	4 ms	5504 KB	Output is correct
29	Correct	4 ms	5504 KB	Output is correct
30	Correct	5 ms	5504 KB	Output is correct
31	Correct	5 ms	5504 KB	Output is correct
32	Correct	4 ms	5504 KB	Output is correct
33	Correct	4 ms	5504 KB	Output is correct
34	Correct	4 ms	5504 KB	Output is correct
35	Correct	4 ms	5504 KB	Output is correct
36	Correct	4 ms	5504 KB	Output is correct
37	Correct	5 ms	5504 KB	Output is correct
38	Correct	4 ms	5504 KB	Output is correct
39	Correct	5 ms	5504 KB	Output is correct
40	Correct	4 ms	5504 KB	Output is correct
41	Correct	4 ms	5504 KB	Output is correct
42	Correct	4 ms	5504 KB	Output is correct
43	Correct	4 ms	5504 KB	Output is correct
44	Correct	4 ms	5504 KB	Output is correct

Subtask #2
9.0 / 9.0

#	결과	실행 시간	메모리	Grader output
1	Correct	3 ms	5504 KB	Output is correct
2	Correct	3 ms	5504 KB	Output is correct
3	Correct	4 ms	5504 KB	Output is correct
4	Correct	4 ms	5504 KB	Output is correct
5	Correct	5 ms	5504 KB	Output is correct
6	Correct	5 ms	5504 KB	Output is correct
7	Correct	4 ms	5504 KB	Output is correct
8	Correct	4 ms	5504 KB	Output is correct
9	Correct	4 ms	5632 KB	Output is correct
10	Correct	4 ms	5504 KB	Output is correct
11	Correct	4 ms	5504 KB	Output is correct
12	Correct	4 ms	5504 KB	Output is correct
13	Correct	4 ms	5504 KB	Output is correct
14	Correct	4 ms	5504 KB	Output is correct
15	Correct	4 ms	5504 KB	Output is correct
16	Correct	5 ms	5504 KB	Output is correct
17	Correct	5 ms	5504 KB	Output is correct
18	Correct	5 ms	5504 KB	Output is correct
19	Correct	4 ms	5504 KB	Output is correct
20	Correct	4 ms	5504 KB	Output is correct
21	Correct	4 ms	5504 KB	Output is correct
22	Correct	4 ms	5504 KB	Output is correct
23	Correct	4 ms	5504 KB	Output is correct
24	Correct	4 ms	5504 KB	Output is correct
25	Correct	4 ms	5504 KB	Output is correct
26	Correct	4 ms	5504 KB	Output is correct
27	Correct	4 ms	5504 KB	Output is correct
28	Correct	4 ms	5504 KB	Output is correct
29	Correct	4 ms	5504 KB	Output is correct
30	Correct	5 ms	5504 KB	Output is correct
31	Correct	5 ms	5504 KB	Output is correct
32	Correct	4 ms	5504 KB	Output is correct
33	Correct	4 ms	5504 KB	Output is correct
34	Correct	4 ms	5504 KB	Output is correct
35	Correct	4 ms	5504 KB	Output is correct
36	Correct	4 ms	5504 KB	Output is correct
37	Correct	5 ms	5504 KB	Output is correct
38	Correct	4 ms	5504 KB	Output is correct
39	Correct	5 ms	5504 KB	Output is correct
40	Correct	4 ms	5504 KB	Output is correct
41	Correct	4 ms	5504 KB	Output is correct
42	Correct	4 ms	5504 KB	Output is correct
43	Correct	4 ms	5504 KB	Output is correct
44	Correct	4 ms	5504 KB	Output is correct
45	Correct	5 ms	5632 KB	Output is correct
46	Correct	11 ms	5888 KB	Output is correct
47	Correct	13 ms	5760 KB	Output is correct
48	Correct	11 ms	5760 KB	Output is correct
49	Correct	8 ms	6144 KB	Output is correct
50	Correct	9 ms	6144 KB	Output is correct
51	Correct	9 ms	6144 KB	Output is correct
52	Correct	8 ms	6016 KB	Output is correct
53	Correct	8 ms	6016 KB	Output is correct
54	Correct	8 ms	6016 KB	Output is correct
55	Correct	8 ms	6016 KB	Output is correct
56	Correct	8 ms	6016 KB	Output is correct
57	Correct	13 ms	5760 KB	Output is correct
58	Correct	14 ms	5760 KB	Output is correct
59	Correct	14 ms	5760 KB	Output is correct
60	Correct	13 ms	5760 KB	Output is correct
61	Correct	9 ms	6016 KB	Output is correct
62	Correct	8 ms	6016 KB	Output is correct
63	Correct	8 ms	6016 KB	Output is correct
64	Correct	9 ms	5760 KB	Output is correct
65	Correct	9 ms	5760 KB	Output is correct
66	Correct	10 ms	5852 KB	Output is correct
67	Correct	11 ms	5760 KB	Output is correct
68	Correct	7 ms	6016 KB	Output is correct
69	Correct	10 ms	6016 KB	Output is correct
70	Correct	7 ms	6016 KB	Output is correct
71	Correct	7 ms	6016 KB	Output is correct
72	Correct	14 ms	5760 KB	Output is correct
73	Correct	12 ms	5760 KB	Output is correct
74	Correct	7 ms	5888 KB	Output is correct
75	Correct	8 ms	5888 KB	Output is correct
76	Correct	9 ms	5888 KB	Output is correct
77	Correct	11 ms	5888 KB	Output is correct
78	Correct	8 ms	5888 KB	Output is correct
79	Correct	8 ms	5888 KB	Output is correct
80	Correct	9 ms	5888 KB	Output is correct
81	Correct	9 ms	6016 KB	Output is correct
82	Correct	9 ms	5888 KB	Output is correct
83	Correct	9 ms	6016 KB	Output is correct
84	Correct	8 ms	6016 KB	Output is correct
85	Correct	8 ms	5888 KB	Output is correct
86	Correct	8 ms	5888 KB	Output is correct

Subtask #3
84.0 / 84.0

#	결과	실행 시간	메모리	Grader output
1	Correct	3 ms	5504 KB	Output is correct
2	Correct	3 ms	5504 KB	Output is correct
3	Correct	4 ms	5504 KB	Output is correct
4	Correct	4 ms	5504 KB	Output is correct
5	Correct	5 ms	5504 KB	Output is correct
6	Correct	5 ms	5504 KB	Output is correct
7	Correct	4 ms	5504 KB	Output is correct
8	Correct	4 ms	5504 KB	Output is correct
9	Correct	4 ms	5632 KB	Output is correct
10	Correct	4 ms	5504 KB	Output is correct
11	Correct	4 ms	5504 KB	Output is correct
12	Correct	4 ms	5504 KB	Output is correct
13	Correct	4 ms	5504 KB	Output is correct
14	Correct	4 ms	5504 KB	Output is correct
15	Correct	4 ms	5504 KB	Output is correct
16	Correct	5 ms	5504 KB	Output is correct
17	Correct	5 ms	5504 KB	Output is correct
18	Correct	5 ms	5504 KB	Output is correct
19	Correct	4 ms	5504 KB	Output is correct
20	Correct	4 ms	5504 KB	Output is correct
21	Correct	4 ms	5504 KB	Output is correct
22	Correct	4 ms	5504 KB	Output is correct
23	Correct	4 ms	5504 KB	Output is correct
24	Correct	4 ms	5504 KB	Output is correct
25	Correct	4 ms	5504 KB	Output is correct
26	Correct	4 ms	5504 KB	Output is correct
27	Correct	4 ms	5504 KB	Output is correct
28	Correct	4 ms	5504 KB	Output is correct
29	Correct	4 ms	5504 KB	Output is correct
30	Correct	5 ms	5504 KB	Output is correct
31	Correct	5 ms	5504 KB	Output is correct
32	Correct	4 ms	5504 KB	Output is correct
33	Correct	4 ms	5504 KB	Output is correct
34	Correct	4 ms	5504 KB	Output is correct
35	Correct	4 ms	5504 KB	Output is correct
36	Correct	4 ms	5504 KB	Output is correct
37	Correct	5 ms	5504 KB	Output is correct
38	Correct	4 ms	5504 KB	Output is correct
39	Correct	5 ms	5504 KB	Output is correct
40	Correct	4 ms	5504 KB	Output is correct
41	Correct	4 ms	5504 KB	Output is correct
42	Correct	4 ms	5504 KB	Output is correct
43	Correct	4 ms	5504 KB	Output is correct
44	Correct	4 ms	5504 KB	Output is correct
45	Correct	5 ms	5632 KB	Output is correct
46	Correct	11 ms	5888 KB	Output is correct
47	Correct	13 ms	5760 KB	Output is correct
48	Correct	11 ms	5760 KB	Output is correct
49	Correct	8 ms	6144 KB	Output is correct
50	Correct	9 ms	6144 KB	Output is correct
51	Correct	9 ms	6144 KB	Output is correct
52	Correct	8 ms	6016 KB	Output is correct
53	Correct	8 ms	6016 KB	Output is correct
54	Correct	8 ms	6016 KB	Output is correct
55	Correct	8 ms	6016 KB	Output is correct
56	Correct	8 ms	6016 KB	Output is correct
57	Correct	13 ms	5760 KB	Output is correct
58	Correct	14 ms	5760 KB	Output is correct
59	Correct	14 ms	5760 KB	Output is correct
60	Correct	13 ms	5760 KB	Output is correct
61	Correct	9 ms	6016 KB	Output is correct
62	Correct	8 ms	6016 KB	Output is correct
63	Correct	8 ms	6016 KB	Output is correct
64	Correct	9 ms	5760 KB	Output is correct
65	Correct	9 ms	5760 KB	Output is correct
66	Correct	10 ms	5852 KB	Output is correct
67	Correct	11 ms	5760 KB	Output is correct
68	Correct	7 ms	6016 KB	Output is correct
69	Correct	10 ms	6016 KB	Output is correct
70	Correct	7 ms	6016 KB	Output is correct
71	Correct	7 ms	6016 KB	Output is correct
72	Correct	14 ms	5760 KB	Output is correct
73	Correct	12 ms	5760 KB	Output is correct
74	Correct	7 ms	5888 KB	Output is correct
75	Correct	8 ms	5888 KB	Output is correct
76	Correct	9 ms	5888 KB	Output is correct
77	Correct	11 ms	5888 KB	Output is correct
78	Correct	8 ms	5888 KB	Output is correct
79	Correct	8 ms	5888 KB	Output is correct
80	Correct	9 ms	5888 KB	Output is correct
81	Correct	9 ms	6016 KB	Output is correct
82	Correct	9 ms	5888 KB	Output is correct
83	Correct	9 ms	6016 KB	Output is correct
84	Correct	8 ms	6016 KB	Output is correct
85	Correct	8 ms	5888 KB	Output is correct
86	Correct	8 ms	5888 KB	Output is correct
87	Correct	23 ms	6272 KB	Output is correct
88	Correct	73 ms	7928 KB	Output is correct
89	Correct	312 ms	13560 KB	Output is correct
90	Correct	305 ms	13560 KB	Output is correct
91	Correct	299 ms	13560 KB	Output is correct
92	Correct	183 ms	21752 KB	Output is correct
93	Correct	157 ms	21752 KB	Output is correct
94	Correct	161 ms	21752 KB	Output is correct
95	Correct	180 ms	18672 KB	Output is correct
96	Correct	177 ms	18800 KB	Output is correct
97	Correct	174 ms	18672 KB	Output is correct
98	Correct	175 ms	18672 KB	Output is correct
99	Correct	176 ms	17656 KB	Output is correct
100	Correct	415 ms	13436 KB	Output is correct
101	Correct	457 ms	13176 KB	Output is correct
102	Correct	453 ms	13176 KB	Output is correct
103	Correct	451 ms	13304 KB	Output is correct
104	Correct	185 ms	17772 KB	Output is correct
105	Correct	187 ms	17636 KB	Output is correct
106	Correct	192 ms	17656 KB	Output is correct
107	Correct	233 ms	13688 KB	Output is correct
108	Correct	239 ms	13688 KB	Output is correct
109	Correct	272 ms	13688 KB	Output is correct
110	Correct	103 ms	20336 KB	Output is correct
111	Correct	168 ms	18672 KB	Output is correct
112	Correct	117 ms	18544 KB	Output is correct
113	Correct	118 ms	17552 KB	Output is correct
114	Correct	393 ms	13304 KB	Output is correct
115	Correct	366 ms	13140 KB	Output is correct
116	Correct	126 ms	17520 KB	Output is correct
117	Correct	178 ms	15732 KB	Output is correct
118	Correct	180 ms	15220 KB	Output is correct
119	Correct	177 ms	14584 KB	Output is correct
120	Correct	124 ms	15480 KB	Output is correct
121	Correct	119 ms	14964 KB	Output is correct
122	Correct	120 ms	14524 KB	Output is correct
123	Correct	188 ms	15736 KB	Output is correct
124	Correct	195 ms	15220 KB	Output is correct
125	Correct	190 ms	14712 KB	Output is correct
126	Correct	137 ms	15600 KB	Output is correct
127	Correct	137 ms	14964 KB	Output is correct
128	Correct	135 ms	14712 KB	Output is correct

답안 #315361

Compilation message

Subtask #1 7.0 / 7.0

Subtask #2 9.0 / 9.0

Subtask #3 84.0 / 84.0

Subtask #1
7.0 / 7.0

Subtask #2
9.0 / 9.0

Subtask #3
84.0 / 84.0