oj.uz

답안 #78188

# 제출 시각 아이디 문제 언어 결과 실행 시간 메모리
78188 2018-10-02T21:13:13 Z MladenP Election Campaign (JOI15_election_campaign) C++17
100 / 100
 251 ms 28132 KB 
#include<bits/stdc++.h>
#define STIZE(x) fprintf(stderr, "STIZE%d\n", x);
#define PRINT(x) fprintf(stderr, "%s = %d\n", #x, x);
#define NL(x) printf("%c", " \n"[(x)]);
#define lld long long
#define pii pair<int,int>
#define pb push_back
#define fi first
#define se second
#define mid (l+r)/2
#define endl '\n'
#define all(a) begin(a),end(a)
#define sz(a) int((a).size())
#define LINF 1000000000000000LL
#define INF 1000000000
#define EPS 1e-9
using namespace std;
#define MAXN 100010
#define MAXL 20
struct query{
    int A, B, C;
} q;
vector<query> qs[MAXN];
vector<int> adj[MAXN];
int N, siz[MAXN], idx[MAXN], seg[4*MAXN], anc[MAXN][MAXL], timer, idxx, in[MAXN], out[MAXN], dp[MAXN], dp1[MAXN];
int dfsLCA(int node, int prev) {
    idx[node] = ++timer; in[node] = ++idxx;
    anc[node][0] = prev; siz[node] = 1;
    for(auto x : adj[node]) {
        if(x != prev) {
            siz[node] += dfsLCA(x, node);
        }
    }
    out[node] = ++idxx;
    return siz[node];
}
void init() {
    dfsLCA(1, 1);
    for(int d = 1; d < MAXL; d++) {
        for(int i = 1; i <= N; i++) {
            anc[i][d] = anc[anc[i][d-1]][d-1];
        }
    }
}
bool inSubtree(int x, int y) {
    return (in[y] <= in[x] && out[x] <= out[y]);
}
int LCA(int x, int y) {
    if(inSubtree(x, y)) return y;
    if(inSubtree(y, x)) return x;
    for(int d = MAXL-1; d >= 0; d--) {
        if(!inSubtree(y, anc[x][d])) x = anc[x][d];
    }
    return anc[x][0];
}
int query(int node1, int l, int r, int idx) {
    if(l == r && l == idx) return seg[node1];
    if(r < l || idx < l || r < idx) return 0;
    return seg[node1] + query(2*node1, l, mid, idx) + query(2*node1+1, mid+1, r, idx);
}
int update(int node1, int l, int r, int L, int R, int val) {
    if(l > r || L > r || l > R || L > R) return 0;
    if(L <= l && r <= R) {
        return seg[node1] += val;
    }
    update(2*node1, l, mid, L, R, val); update(2*node1+1, mid+1, r, L, R, val);
}
int DFS(int node, int prev) {
    for(auto x : adj[node]) {
        if(x != prev) dp1[node] += DFS(x, node);
    }
    dp[node] = dp1[node];
    for(auto q : qs[node]) {
        dp[node] = max(dp[node], q.C + query(1, 1, N, idx[q.A]) + query(1, 1, N, idx[q.B]) + dp1[node]);
    }
    update(1, 1, N, idx[node], idx[node]+siz[node]-1, dp1[node]-dp[node]);
    return dp[node];
}
int main() {
    ios::sync_with_stdio(false);cin.tie(0);
    cin >> N;
    for(int i = 1; i < N; i++) {
        int x, y; cin >> x >> y;
        adj[x].pb(y); adj[y].pb(x);
    }
    init();
    int Q; cin >> Q;
    for(int i = 1; i <= Q; i++) {
        cin >> q.A >> q.B >> q.C;
        qs[LCA(q.A, q.B)].pb(q);
    }
    DFS(1, 1);
    cout << dp[1] << endl;
    return 0;
}

Compilation message

election_campaign.cpp: In function 'int update(int, int, int, int, int, int)':
election_campaign.cpp:67:1: warning: control reaches end of non-void function [-Wreturn-type]
 }
 ^

Subtask #1
10.0 / 10.0

# 결과 실행 시간 메모리 Grader output
1 Correct 6 ms 5112 KB Output is correct
2 Correct 6 ms 5200 KB Output is correct
3 Correct 6 ms 5200 KB Output is correct
4 Correct 6 ms 5408 KB Output is correct
5 Correct 135 ms 19680 KB Output is correct
6 Correct 75 ms 25696 KB Output is correct
7 Correct 128 ms 25696 KB Output is correct
8 Correct 87 ms 25696 KB Output is correct
9 Correct 108 ms 25696 KB Output is correct
10 Correct 85 ms 25696 KB Output is correct

Subtask #2
5.0 / 5.0

# 결과 실행 시간 메모리 Grader output
1 Correct 5 ms 25696 KB Output is correct
2 Correct 6 ms 25696 KB Output is correct
3 Correct 7 ms 25696 KB Output is correct
4 Correct 180 ms 27844 KB Output is correct
5 Correct 151 ms 27972 KB Output is correct
6 Correct 146 ms 28020 KB Output is correct
7 Correct 154 ms 28020 KB Output is correct
8 Correct 154 ms 28020 KB Output is correct
9 Correct 149 ms 28020 KB Output is correct
10 Correct 159 ms 28028 KB Output is correct

Subtask #3
5.0 / 5.0

# 결과 실행 시간 메모리 Grader output
1 Correct 5 ms 25696 KB Output is correct
2 Correct 6 ms 25696 KB Output is correct
3 Correct 7 ms 25696 KB Output is correct
4 Correct 180 ms 27844 KB Output is correct
5 Correct 151 ms 27972 KB Output is correct
6 Correct 146 ms 28020 KB Output is correct
7 Correct 154 ms 28020 KB Output is correct
8 Correct 154 ms 28020 KB Output is correct
9 Correct 149 ms 28020 KB Output is correct
10 Correct 159 ms 28028 KB Output is correct
11 Correct 19 ms 28028 KB Output is correct
12 Correct 195 ms 28028 KB Output is correct
13 Correct 155 ms 28028 KB Output is correct
14 Correct 156 ms 28028 KB Output is correct
15 Correct 171 ms 28056 KB Output is correct
16 Correct 150 ms 28056 KB Output is correct
17 Correct 162 ms 28056 KB Output is correct
18 Correct 156 ms 28056 KB Output is correct
19 Correct 156 ms 28132 KB Output is correct
20 Correct 155 ms 28132 KB Output is correct

Subtask #4
30.0 / 30.0

# 결과 실행 시간 메모리 Grader output
1 Correct 229 ms 28132 KB Output is correct
2 Correct 148 ms 28132 KB Output is correct
3 Correct 243 ms 28132 KB Output is correct
4 Correct 217 ms 28132 KB Output is correct
5 Correct 207 ms 28132 KB Output is correct
6 Correct 237 ms 28132 KB Output is correct
7 Correct 248 ms 28132 KB Output is correct
8 Correct 197 ms 28132 KB Output is correct
9 Correct 160 ms 28132 KB Output is correct
10 Correct 249 ms 28132 KB Output is correct

Subtask #5
10.0 / 10.0

# 결과 실행 시간 메모리 Grader output
1 Correct 6 ms 5112 KB Output is correct
2 Correct 6 ms 5200 KB Output is correct
3 Correct 6 ms 5200 KB Output is correct
4 Correct 6 ms 5408 KB Output is correct
5 Correct 135 ms 19680 KB Output is correct
6 Correct 75 ms 25696 KB Output is correct
7 Correct 128 ms 25696 KB Output is correct
8 Correct 87 ms 25696 KB Output is correct
9 Correct 108 ms 25696 KB Output is correct
10 Correct 85 ms 25696 KB Output is correct
11 Correct 7 ms 28132 KB Output is correct
12 Correct 7 ms 28132 KB Output is correct
13 Correct 7 ms 28132 KB Output is correct
14 Correct 8 ms 28132 KB Output is correct
15 Correct 9 ms 28132 KB Output is correct
16 Correct 7 ms 28132 KB Output is correct
17 Correct 7 ms 28132 KB Output is correct
18 Correct 7 ms 28132 KB Output is correct
19 Correct 7 ms 28132 KB Output is correct
20 Correct 7 ms 28132 KB Output is correct

Subtask #6
40.0 / 40.0

# 결과 실행 시간 메모리 Grader output
1 Correct 6 ms 5112 KB Output is correct
2 Correct 6 ms 5200 KB Output is correct
3 Correct 6 ms 5200 KB Output is correct
4 Correct 6 ms 5408 KB Output is correct
5 Correct 135 ms 19680 KB Output is correct
6 Correct 75 ms 25696 KB Output is correct
7 Correct 128 ms 25696 KB Output is correct
8 Correct 87 ms 25696 KB Output is correct
9 Correct 108 ms 25696 KB Output is correct
10 Correct 85 ms 25696 KB Output is correct
11 Correct 5 ms 25696 KB Output is correct
12 Correct 6 ms 25696 KB Output is correct
13 Correct 7 ms 25696 KB Output is correct
14 Correct 180 ms 27844 KB Output is correct
15 Correct 151 ms 27972 KB Output is correct
16 Correct 146 ms 28020 KB Output is correct
17 Correct 154 ms 28020 KB Output is correct
18 Correct 154 ms 28020 KB Output is correct
19 Correct 149 ms 28020 KB Output is correct
20 Correct 159 ms 28028 KB Output is correct
21 Correct 19 ms 28028 KB Output is correct
22 Correct 195 ms 28028 KB Output is correct
23 Correct 155 ms 28028 KB Output is correct
24 Correct 156 ms 28028 KB Output is correct
25 Correct 171 ms 28056 KB Output is correct
26 Correct 150 ms 28056 KB Output is correct
27 Correct 162 ms 28056 KB Output is correct
28 Correct 156 ms 28056 KB Output is correct
29 Correct 156 ms 28132 KB Output is correct
30 Correct 155 ms 28132 KB Output is correct
31 Correct 229 ms 28132 KB Output is correct
32 Correct 148 ms 28132 KB Output is correct
33 Correct 243 ms 28132 KB Output is correct
34 Correct 217 ms 28132 KB Output is correct
35 Correct 207 ms 28132 KB Output is correct
36 Correct 237 ms 28132 KB Output is correct
37 Correct 248 ms 28132 KB Output is correct
38 Correct 197 ms 28132 KB Output is correct
39 Correct 160 ms 28132 KB Output is correct
40 Correct 249 ms 28132 KB Output is correct
41 Correct 7 ms 28132 KB Output is correct
42 Correct 7 ms 28132 KB Output is correct
43 Correct 7 ms 28132 KB Output is correct
44 Correct 8 ms 28132 KB Output is correct
45 Correct 9 ms 28132 KB Output is correct
46 Correct 7 ms 28132 KB Output is correct
47 Correct 7 ms 28132 KB Output is correct
48 Correct 7 ms 28132 KB Output is correct
49 Correct 7 ms 28132 KB Output is correct
50 Correct 7 ms 28132 KB Output is correct
51 Correct 212 ms 28132 KB Output is correct
52 Correct 156 ms 28132 KB Output is correct
53 Correct 247 ms 28132 KB Output is correct
54 Correct 172 ms 28132 KB Output is correct
55 Correct 216 ms 28132 KB Output is correct
56 Correct 155 ms 28132 KB Output is correct
57 Correct 227 ms 28132 KB Output is correct
58 Correct 191 ms 28132 KB Output is correct
59 Correct 207 ms 28132 KB Output is correct
60 Correct 162 ms 28132 KB Output is correct
61 Correct 208 ms 28132 KB Output is correct
62 Correct 202 ms 28132 KB Output is correct
63 Correct 239 ms 28132 KB Output is correct
64 Correct 172 ms 28132 KB Output is correct
65 Correct 251 ms 28132 KB Output is correct
66 Correct 192 ms 28132 KB Output is correct
67 Correct 246 ms 28132 KB Output is correct
68 Correct 153 ms 28132 KB Output is correct
69 Correct 205 ms 28132 KB Output is correct
70 Correct 189 ms 28132 KB Output is correct