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답안 #517326

# 제출 시각 아이디 문제 언어 결과 실행 시간 메모리
517326 2022-01-23T03:59:12 Z couplefire Construction of Highway (JOI18_construction) C++17
100 / 100
 1126 ms 129992 KB 
#include <bits/stdc++.h>
 
using namespace std;
 
typedef long long ll;
typedef pair<int, int> pii;
 
#define fi first
#define se second
#define mp make_pair
#define fastIO ios::sync_with_stdio(false);cin.tie(0);cout.tie(0);
 
const int N = (int)1e5 + 10;
 
int A[N], B[N], C[N];
vector<int> T[N];
int subt[N];
int dep[N];
int link[N];
int par[N];
 
void dfs(int u){
    subt[u]=1;
    for(auto x : T[u]){
        dep[x]=dep[u]+1;
        par[x]=u;
        dfs(x);
        subt[u]+=subt[x];
    }
}
 
void hld(int u){
    for(auto x : T[u]){
        if(subt[x] > (subt[u] + 1) / 2){
            link[x]=link[u];
        }
        else{
            link[x]=x;
        }
        hld(x);
    }
}
 
deque<pii> vals[N];
 
vector<int> ups;
 
int lim;
int tree[N * 2];
 
void upd(int id, int v){
    id += lim;
    while(id > 0){
        tree[id] += v;
        ups.push_back(id);
        id /= 2;
    }
}
 
int get(int l, int r){
    int cnt = 0;
    l += lim;
    r += lim;
    while(l <= r){
        if(l % 2 == 1) cnt += tree[l ++];
        if(r % 2 == 0) cnt += tree[r -- ];
        l /= 2;
        r /= 2;
    }
    return cnt;
}
 
ll setv(int node, int bb){
    ll ret = 0;
    int en;
    int len;
    int cur;
    int low;
    vector<pii> lines;
    vector<pii> curs;
    while(1){
        en = link[node];
        len = dep[node]-dep[en]+1;
        cur = len;
        curs.clear();
        while(cur > 0){
            low = min(cur, vals[en].back().fi);
            curs.push_back(mp(low, vals[en].back().se));
            vals[en].back().fi -= low;
            cur -= low;
            if(vals[en].back().fi == 0)
                vals[en].pop_back();
        }
        reverse(curs.begin(), curs.end());
        for(auto x : curs)
            lines.push_back(x);
        vals[en].push_back(mp(len, bb));
        if(en == 1) break;
        node = par[en];
    }
    reverse(lines.begin(), lines.end());
    ups.clear();
    for(auto pq : lines){
        ret += get(pq.se + 1, lim - 1) * 1ll * pq.fi;
        upd(pq.se, pq.fi);
    }
    for(auto x : ups){
        tree[x]=0;
    }
    return ret;
}
 
int main(){
    fastIO;
    int n;
    cin >> n;
    vector<int> x;
    for(int i = 1; i <= n; i ++ ){
        cin >> C[i];
        x.push_back(C[i]);
    }
    sort(x.begin(), x.end());
    x.resize(unique(x.begin(), x.end()) - x.begin());
    lim = x.size();
    for(int i = 1; i <= n; i ++ ){
        C[i] = lower_bound(x.begin(), x.end(), C[i]) - x.begin();
    }
    int u, v;
    for(int i = 1; i < n; i ++ ){
        cin >> A[i] >> B[i];
        T[A[i]].push_back(B[i]);
    }
    link[1]=1;
    dfs(1);
    hld(1);
    par[1]=1;
    vals[1].push_back(mp(1, C[1]));
    for(int i = 1; i < n; i ++ ){
        cout << setv(A[i], C[B[i]]) << "\n";
        if(vals[link[B[i]]].empty() || vals[link[B[i]]].front().se != C[B[i]]){
            vals[link[B[i]]].push_front(mp(1, C[B[i]]));
        }
        else{
            vals[link[B[i]]].front().fi ++ ;
        }
    }
    return 0;
}

Compilation message

construction.cpp: In function 'int main()':
construction.cpp:128:9: warning: unused variable 'u' [-Wunused-variable]
  128 |     int u, v;
      |         ^
construction.cpp:128:12: warning: unused variable 'v' [-Wunused-variable]
  128 |     int u, v;
      |            ^

Subtask #1
7.0 / 7.0

# 결과 실행 시간 메모리 Grader output
1 Correct 45 ms 69964 KB Output is correct
2 Correct 42 ms 69920 KB Output is correct
3 Correct 55 ms 70064 KB Output is correct
4 Correct 69 ms 70084 KB Output is correct
5 Correct 55 ms 70276 KB Output is correct
6 Correct 51 ms 70288 KB Output is correct
7 Correct 48 ms 70280 KB Output is correct
8 Correct 53 ms 69988 KB Output is correct
9 Correct 46 ms 70072 KB Output is correct
10 Correct 46 ms 70072 KB Output is correct
11 Correct 62 ms 70220 KB Output is correct
12 Correct 46 ms 70180 KB Output is correct
13 Correct 48 ms 70212 KB Output is correct
14 Correct 46 ms 70116 KB Output is correct
15 Correct 58 ms 70220 KB Output is correct
16 Correct 50 ms 70260 KB Output is correct
17 Correct 52 ms 70308 KB Output is correct
18 Correct 63 ms 70264 KB Output is correct
19 Correct 54 ms 70152 KB Output is correct
20 Correct 46 ms 70204 KB Output is correct
21 Correct 46 ms 70348 KB Output is correct
22 Correct 50 ms 70212 KB Output is correct
23 Correct 45 ms 70260 KB Output is correct
24 Correct 48 ms 70276 KB Output is correct
25 Correct 48 ms 70212 KB Output is correct
26 Correct 45 ms 70032 KB Output is correct
27 Correct 49 ms 70224 KB Output is correct
28 Correct 45 ms 70120 KB Output is correct
29 Correct 49 ms 70188 KB Output is correct
30 Correct 53 ms 70248 KB Output is correct
31 Correct 47 ms 70184 KB Output is correct
32 Correct 49 ms 70192 KB Output is correct
33 Correct 48 ms 70124 KB Output is correct
34 Correct 50 ms 70072 KB Output is correct
35 Correct 47 ms 70080 KB Output is correct
36 Correct 46 ms 70140 KB Output is correct
37 Correct 50 ms 70124 KB Output is correct
38 Correct 48 ms 70176 KB Output is correct
39 Correct 49 ms 70184 KB Output is correct
40 Correct 52 ms 70120 KB Output is correct
41 Correct 53 ms 70184 KB Output is correct
42 Correct 55 ms 70104 KB Output is correct
43 Correct 64 ms 70140 KB Output is correct
44 Correct 50 ms 70184 KB Output is correct

Subtask #2
9.0 / 9.0

# 결과 실행 시간 메모리 Grader output
1 Correct 45 ms 69964 KB Output is correct
2 Correct 42 ms 69920 KB Output is correct
3 Correct 55 ms 70064 KB Output is correct
4 Correct 69 ms 70084 KB Output is correct
5 Correct 55 ms 70276 KB Output is correct
6 Correct 51 ms 70288 KB Output is correct
7 Correct 48 ms 70280 KB Output is correct
8 Correct 53 ms 69988 KB Output is correct
9 Correct 46 ms 70072 KB Output is correct
10 Correct 46 ms 70072 KB Output is correct
11 Correct 62 ms 70220 KB Output is correct
12 Correct 46 ms 70180 KB Output is correct
13 Correct 48 ms 70212 KB Output is correct
14 Correct 46 ms 70116 KB Output is correct
15 Correct 58 ms 70220 KB Output is correct
16 Correct 50 ms 70260 KB Output is correct
17 Correct 52 ms 70308 KB Output is correct
18 Correct 63 ms 70264 KB Output is correct
19 Correct 54 ms 70152 KB Output is correct
20 Correct 46 ms 70204 KB Output is correct
21 Correct 46 ms 70348 KB Output is correct
22 Correct 50 ms 70212 KB Output is correct
23 Correct 45 ms 70260 KB Output is correct
24 Correct 48 ms 70276 KB Output is correct
25 Correct 48 ms 70212 KB Output is correct
26 Correct 45 ms 70032 KB Output is correct
27 Correct 49 ms 70224 KB Output is correct
28 Correct 45 ms 70120 KB Output is correct
29 Correct 49 ms 70188 KB Output is correct
30 Correct 53 ms 70248 KB Output is correct
31 Correct 47 ms 70184 KB Output is correct
32 Correct 49 ms 70192 KB Output is correct
33 Correct 48 ms 70124 KB Output is correct
34 Correct 50 ms 70072 KB Output is correct
35 Correct 47 ms 70080 KB Output is correct
36 Correct 46 ms 70140 KB Output is correct
37 Correct 50 ms 70124 KB Output is correct
38 Correct 48 ms 70176 KB Output is correct
39 Correct 49 ms 70184 KB Output is correct
40 Correct 52 ms 70120 KB Output is correct
41 Correct 53 ms 70184 KB Output is correct
42 Correct 55 ms 70104 KB Output is correct
43 Correct 64 ms 70140 KB Output is correct
44 Correct 50 ms 70184 KB Output is correct
45 Correct 47 ms 70552 KB Output is correct
46 Correct 80 ms 72116 KB Output is correct
47 Correct 56 ms 72152 KB Output is correct
48 Correct 59 ms 72180 KB Output is correct
49 Correct 61 ms 70620 KB Output is correct
50 Correct 51 ms 70676 KB Output is correct
51 Correct 45 ms 70596 KB Output is correct
52 Correct 52 ms 71676 KB Output is correct
53 Correct 65 ms 71748 KB Output is correct
54 Correct 73 ms 71664 KB Output is correct
55 Correct 59 ms 71704 KB Output is correct
56 Correct 54 ms 71504 KB Output is correct
57 Correct 61 ms 72312 KB Output is correct
58 Correct 68 ms 72388 KB Output is correct
59 Correct 66 ms 72288 KB Output is correct
60 Correct 68 ms 72380 KB Output is correct
61 Correct 52 ms 71408 KB Output is correct
62 Correct 64 ms 71424 KB Output is correct
63 Correct 56 ms 71500 KB Output is correct
64 Correct 53 ms 72048 KB Output is correct
65 Correct 56 ms 72080 KB Output is correct
66 Correct 62 ms 72084 KB Output is correct
67 Correct 61 ms 72032 KB Output is correct
68 Correct 58 ms 70620 KB Output is correct
69 Correct 61 ms 71704 KB Output is correct
70 Correct 56 ms 71516 KB Output is correct
71 Correct 49 ms 71384 KB Output is correct
72 Correct 60 ms 72360 KB Output is correct
73 Correct 59 ms 72260 KB Output is correct
74 Correct 49 ms 71440 KB Output is correct
75 Correct 52 ms 71412 KB Output is correct
76 Correct 57 ms 71392 KB Output is correct
77 Correct 58 ms 71316 KB Output is correct
78 Correct 62 ms 71284 KB Output is correct
79 Correct 65 ms 71208 KB Output is correct
80 Correct 81 ms 71312 KB Output is correct
81 Correct 62 ms 71412 KB Output is correct
82 Correct 63 ms 71300 KB Output is correct
83 Correct 60 ms 71276 KB Output is correct
84 Correct 58 ms 71288 KB Output is correct
85 Correct 60 ms 71236 KB Output is correct
86 Correct 59 ms 71332 KB Output is correct

Subtask #3
84.0 / 84.0

# 결과 실행 시간 메모리 Grader output
1 Correct 45 ms 69964 KB Output is correct
2 Correct 42 ms 69920 KB Output is correct
3 Correct 55 ms 70064 KB Output is correct
4 Correct 69 ms 70084 KB Output is correct
5 Correct 55 ms 70276 KB Output is correct
6 Correct 51 ms 70288 KB Output is correct
7 Correct 48 ms 70280 KB Output is correct
8 Correct 53 ms 69988 KB Output is correct
9 Correct 46 ms 70072 KB Output is correct
10 Correct 46 ms 70072 KB Output is correct
11 Correct 62 ms 70220 KB Output is correct
12 Correct 46 ms 70180 KB Output is correct
13 Correct 48 ms 70212 KB Output is correct
14 Correct 46 ms 70116 KB Output is correct
15 Correct 58 ms 70220 KB Output is correct
16 Correct 50 ms 70260 KB Output is correct
17 Correct 52 ms 70308 KB Output is correct
18 Correct 63 ms 70264 KB Output is correct
19 Correct 54 ms 70152 KB Output is correct
20 Correct 46 ms 70204 KB Output is correct
21 Correct 46 ms 70348 KB Output is correct
22 Correct 50 ms 70212 KB Output is correct
23 Correct 45 ms 70260 KB Output is correct
24 Correct 48 ms 70276 KB Output is correct
25 Correct 48 ms 70212 KB Output is correct
26 Correct 45 ms 70032 KB Output is correct
27 Correct 49 ms 70224 KB Output is correct
28 Correct 45 ms 70120 KB Output is correct
29 Correct 49 ms 70188 KB Output is correct
30 Correct 53 ms 70248 KB Output is correct
31 Correct 47 ms 70184 KB Output is correct
32 Correct 49 ms 70192 KB Output is correct
33 Correct 48 ms 70124 KB Output is correct
34 Correct 50 ms 70072 KB Output is correct
35 Correct 47 ms 70080 KB Output is correct
36 Correct 46 ms 70140 KB Output is correct
37 Correct 50 ms 70124 KB Output is correct
38 Correct 48 ms 70176 KB Output is correct
39 Correct 49 ms 70184 KB Output is correct
40 Correct 52 ms 70120 KB Output is correct
41 Correct 53 ms 70184 KB Output is correct
42 Correct 55 ms 70104 KB Output is correct
43 Correct 64 ms 70140 KB Output is correct
44 Correct 50 ms 70184 KB Output is correct
45 Correct 47 ms 70552 KB Output is correct
46 Correct 80 ms 72116 KB Output is correct
47 Correct 56 ms 72152 KB Output is correct
48 Correct 59 ms 72180 KB Output is correct
49 Correct 61 ms 70620 KB Output is correct
50 Correct 51 ms 70676 KB Output is correct
51 Correct 45 ms 70596 KB Output is correct
52 Correct 52 ms 71676 KB Output is correct
53 Correct 65 ms 71748 KB Output is correct
54 Correct 73 ms 71664 KB Output is correct
55 Correct 59 ms 71704 KB Output is correct
56 Correct 54 ms 71504 KB Output is correct
57 Correct 61 ms 72312 KB Output is correct
58 Correct 68 ms 72388 KB Output is correct
59 Correct 66 ms 72288 KB Output is correct
60 Correct 68 ms 72380 KB Output is correct
61 Correct 52 ms 71408 KB Output is correct
62 Correct 64 ms 71424 KB Output is correct
63 Correct 56 ms 71500 KB Output is correct
64 Correct 53 ms 72048 KB Output is correct
65 Correct 56 ms 72080 KB Output is correct
66 Correct 62 ms 72084 KB Output is correct
67 Correct 61 ms 72032 KB Output is correct
68 Correct 58 ms 70620 KB Output is correct
69 Correct 61 ms 71704 KB Output is correct
70 Correct 56 ms 71516 KB Output is correct
71 Correct 49 ms 71384 KB Output is correct
72 Correct 60 ms 72360 KB Output is correct
73 Correct 59 ms 72260 KB Output is correct
74 Correct 49 ms 71440 KB Output is correct
75 Correct 52 ms 71412 KB Output is correct
76 Correct 57 ms 71392 KB Output is correct
77 Correct 58 ms 71316 KB Output is correct
78 Correct 62 ms 71284 KB Output is correct
79 Correct 65 ms 71208 KB Output is correct
80 Correct 81 ms 71312 KB Output is correct
81 Correct 62 ms 71412 KB Output is correct
82 Correct 63 ms 71300 KB Output is correct
83 Correct 60 ms 71276 KB Output is correct
84 Correct 58 ms 71288 KB Output is correct
85 Correct 60 ms 71236 KB Output is correct
86 Correct 59 ms 71332 KB Output is correct
87 Correct 74 ms 75324 KB Output is correct
88 Correct 181 ms 86164 KB Output is correct
89 Correct 553 ms 123864 KB Output is correct
90 Correct 544 ms 123696 KB Output is correct
91 Correct 539 ms 123616 KB Output is correct
92 Correct 178 ms 87156 KB Output is correct
93 Correct 165 ms 87116 KB Output is correct
94 Correct 165 ms 87112 KB Output is correct
95 Correct 181 ms 112612 KB Output is correct
96 Correct 254 ms 112916 KB Output is correct
97 Correct 213 ms 112960 KB Output is correct
98 Correct 272 ms 112924 KB Output is correct
99 Correct 205 ms 107740 KB Output is correct
100 Correct 821 ms 129648 KB Output is correct
101 Correct 901 ms 129936 KB Output is correct
102 Correct 1126 ms 129992 KB Output is correct
103 Correct 975 ms 129908 KB Output is correct
104 Correct 282 ms 107664 KB Output is correct
105 Correct 213 ms 107640 KB Output is correct
106 Correct 215 ms 107656 KB Output is correct
107 Correct 313 ms 122092 KB Output is correct
108 Correct 401 ms 122268 KB Output is correct
109 Correct 492 ms 122848 KB Output is correct
110 Correct 148 ms 85864 KB Output is correct
111 Correct 215 ms 112544 KB Output is correct
112 Correct 195 ms 109408 KB Output is correct
113 Correct 169 ms 106280 KB Output is correct
114 Correct 831 ms 129692 KB Output is correct
115 Correct 765 ms 128636 KB Output is correct
116 Correct 198 ms 106292 KB Output is correct
117 Correct 263 ms 105284 KB Output is correct
118 Correct 235 ms 104612 KB Output is correct
119 Correct 241 ms 104232 KB Output is correct
120 Correct 178 ms 104128 KB Output is correct
121 Correct 185 ms 103544 KB Output is correct
122 Correct 202 ms 103256 KB Output is correct
123 Correct 243 ms 105348 KB Output is correct
124 Correct 258 ms 104640 KB Output is correct
125 Correct 229 ms 104320 KB Output is correct
126 Correct 202 ms 104228 KB Output is correct
127 Correct 204 ms 103632 KB Output is correct
128 Correct 212 ms 103372 KB Output is correct