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답안 #701026

# 제출 시각 아이디 문제 언어 결과 실행 시간 메모리
701026 2023-02-19T19:10:22 Z ParsaS 별자리 3 (JOI20_constellation3) C++17
100 / 100
 375 ms 123380 KB 
// In the name of God
// sorry M
#include<bits/stdc++.h>
using namespace std;
#define pb push_back
#define fi first
#define se second
#define mp make_pair
typedef long long ll;
#define int ll
const int N = 4e5 + 5, L = 20;
int n, m, A[N], H[N];
int id[N], sprc[N][L], ver, tin[N], tout[N], T;
set<pair<int, pair<int, int> > > st[N];
vector<int> adj[N];
ll dp[N], fen[N];

ll query(int i) {
    ll res = 0;
    for (i; i > 0; i -= i & -i)
        res += fen[i];
    return res;
}
void upd(int i, int val) {
    for (i; i < N; i += i & -i)
        fen[i] += val;
}
void range_upd(int l, int r, int val) {
    upd(l, val);
    upd(r + 1, -val);
}

void _merge(int v, int u) {
    if (st[v].size() < st[u].size())
        st[v].swap(st[u]);
    for (auto x : st[u])
        st[v].insert(x);
}

void dfs(int v, int p = 0) {
    tin[v] = ++T;
    int lc = 0, rc = 0;
    for (auto u : adj[v]) {
        dfs(u, v);
        _merge(v, u);
        if (lc == 0)
            lc = u;
        else
            rc = u;
    }
    if (rc) {
        range_upd(tin[lc], tout[lc], dp[rc]);
        range_upd(tin[rc], tout[rc], dp[lc]);
    }
    dp[v] = dp[lc] + dp[rc];
    range_upd(tin[v], tin[v], dp[v]);
    while (!st[v].empty() && st[v].begin()->fi <= H[p]) {
        dp[v] = max(dp[v], query(tin[st[v].begin()->se.fi]) + st[v].begin()->se.se);
        //cout << "rem " << v << ' ' << st[v].begin()->se.fi << ' ' << query(tin[st[v].begin()->se.fi]) << endl;
        st[v].erase(st[v].begin());
    }
    tout[v] = ++T;
    //cout << v << ' ' << dp[v] << endl;
}

int build(int l, int r) {
    if (r < l)
        return -1;
    int lg = __lg(r - l + 1);
    int v = sprc[l][lg];
    if (A[v] < A[sprc[r - (1 << lg) + 1][lg]])
        v = sprc[r - (1 << lg) + 1][lg];
    id[v] = ++ver;
    int u = ver;
    H[u] = A[v];
    int lc = build(l, v - 1);
    int rc = build(v + 1, r);
    if (lc > -1)
        adj[u].pb(lc);
    if (rc > -1)
        adj[u].pb(rc);
    return u;
}

void solve() {
    cin >> n;
    for (int i = 1; i <= n; i++)
        cin >> A[i];
    for (int i = n; i >= 1; i--) {
        sprc[i][0] = i;
        for (int l = 1; l < L; l++) {
            sprc[i][l] = sprc[i][l - 1];
            if (i + (1 << (l - 1)) <= n && A[sprc[i][l]] < A[sprc[i + (1 << (l - 1))][l - 1]])
                sprc[i][l] = sprc[i + (1 << (l - 1))][l - 1];
        }
    }
    build(1, n);
    ll sum = 0;
    cin >> m;
    for (int i = 0; i < m; i++) {
        int x, y, c; cin >> x >> y >> c;
        st[id[x]].insert(mp(y, mp(id[x], c)));
        sum += c;
    }
    H[0] = 1e9 + 10;
    dfs(1);
    //cout << dp[1] << endl;
    cout << sum - dp[1];
}
int32_t main() {
    ios::sync_with_stdio(0), cin.tie(0), cout.tie(0);
    solve();

    return 0;
}

Compilation message

constellation3.cpp: In function 'll query(ll)':
constellation3.cpp:20:10: warning: statement has no effect [-Wunused-value]
   20 |     for (i; i > 0; i -= i & -i)
      |          ^
constellation3.cpp: In function 'void upd(ll, ll)':
constellation3.cpp:25:10: warning: statement has no effect [-Wunused-value]
   25 |     for (i; i < N; i += i & -i)
      |          ^

Subtask #1
14.0 / 14.0

# 결과 실행 시간 메모리 Grader output
1 Correct 14 ms 28628 KB Output is correct
2 Correct 18 ms 28620 KB Output is correct
3 Correct 17 ms 28628 KB Output is correct
4 Correct 16 ms 28632 KB Output is correct
5 Correct 15 ms 28628 KB Output is correct
6 Correct 14 ms 28656 KB Output is correct
7 Correct 15 ms 28628 KB Output is correct
8 Correct 14 ms 28628 KB Output is correct
9 Correct 15 ms 28648 KB Output is correct
10 Correct 14 ms 28628 KB Output is correct
11 Correct 14 ms 28628 KB Output is correct
12 Correct 16 ms 28652 KB Output is correct
13 Correct 15 ms 28628 KB Output is correct
14 Correct 16 ms 28632 KB Output is correct
15 Correct 14 ms 28628 KB Output is correct
16 Correct 16 ms 28788 KB Output is correct
17 Correct 14 ms 28628 KB Output is correct
18 Correct 14 ms 28640 KB Output is correct
19 Correct 22 ms 28684 KB Output is correct
20 Correct 14 ms 28628 KB Output is correct
21 Correct 14 ms 28628 KB Output is correct
22 Correct 15 ms 28676 KB Output is correct

Subtask #2
21.0 / 21.0

# 결과 실행 시간 메모리 Grader output
1 Correct 14 ms 28628 KB Output is correct
2 Correct 18 ms 28620 KB Output is correct
3 Correct 17 ms 28628 KB Output is correct
4 Correct 16 ms 28632 KB Output is correct
5 Correct 15 ms 28628 KB Output is correct
6 Correct 14 ms 28656 KB Output is correct
7 Correct 15 ms 28628 KB Output is correct
8 Correct 14 ms 28628 KB Output is correct
9 Correct 15 ms 28648 KB Output is correct
10 Correct 14 ms 28628 KB Output is correct
11 Correct 14 ms 28628 KB Output is correct
12 Correct 16 ms 28652 KB Output is correct
13 Correct 15 ms 28628 KB Output is correct
14 Correct 16 ms 28632 KB Output is correct
15 Correct 14 ms 28628 KB Output is correct
16 Correct 16 ms 28788 KB Output is correct
17 Correct 14 ms 28628 KB Output is correct
18 Correct 14 ms 28640 KB Output is correct
19 Correct 22 ms 28684 KB Output is correct
20 Correct 14 ms 28628 KB Output is correct
21 Correct 14 ms 28628 KB Output is correct
22 Correct 15 ms 28676 KB Output is correct
23 Correct 25 ms 29192 KB Output is correct
24 Correct 17 ms 29140 KB Output is correct
25 Correct 18 ms 29140 KB Output is correct
26 Correct 17 ms 29144 KB Output is correct
27 Correct 16 ms 29140 KB Output is correct
28 Correct 18 ms 29140 KB Output is correct
29 Correct 16 ms 29140 KB Output is correct
30 Correct 16 ms 29176 KB Output is correct
31 Correct 16 ms 29176 KB Output is correct
32 Correct 16 ms 29268 KB Output is correct
33 Correct 16 ms 29268 KB Output is correct
34 Correct 16 ms 29304 KB Output is correct
35 Correct 17 ms 29276 KB Output is correct
36 Correct 16 ms 29396 KB Output is correct
37 Correct 16 ms 29380 KB Output is correct
38 Correct 15 ms 29396 KB Output is correct
39 Correct 17 ms 29396 KB Output is correct
40 Correct 16 ms 29360 KB Output is correct
41 Correct 17 ms 29404 KB Output is correct
42 Correct 16 ms 29320 KB Output is correct
43 Correct 15 ms 29396 KB Output is correct
44 Correct 16 ms 29248 KB Output is correct

Subtask #3
65.0 / 65.0

# 결과 실행 시간 메모리 Grader output
1 Correct 14 ms 28628 KB Output is correct
2 Correct 18 ms 28620 KB Output is correct
3 Correct 17 ms 28628 KB Output is correct
4 Correct 16 ms 28632 KB Output is correct
5 Correct 15 ms 28628 KB Output is correct
6 Correct 14 ms 28656 KB Output is correct
7 Correct 15 ms 28628 KB Output is correct
8 Correct 14 ms 28628 KB Output is correct
9 Correct 15 ms 28648 KB Output is correct
10 Correct 14 ms 28628 KB Output is correct
11 Correct 14 ms 28628 KB Output is correct
12 Correct 16 ms 28652 KB Output is correct
13 Correct 15 ms 28628 KB Output is correct
14 Correct 16 ms 28632 KB Output is correct
15 Correct 14 ms 28628 KB Output is correct
16 Correct 16 ms 28788 KB Output is correct
17 Correct 14 ms 28628 KB Output is correct
18 Correct 14 ms 28640 KB Output is correct
19 Correct 22 ms 28684 KB Output is correct
20 Correct 14 ms 28628 KB Output is correct
21 Correct 14 ms 28628 KB Output is correct
22 Correct 15 ms 28676 KB Output is correct
23 Correct 25 ms 29192 KB Output is correct
24 Correct 17 ms 29140 KB Output is correct
25 Correct 18 ms 29140 KB Output is correct
26 Correct 17 ms 29144 KB Output is correct
27 Correct 16 ms 29140 KB Output is correct
28 Correct 18 ms 29140 KB Output is correct
29 Correct 16 ms 29140 KB Output is correct
30 Correct 16 ms 29176 KB Output is correct
31 Correct 16 ms 29176 KB Output is correct
32 Correct 16 ms 29268 KB Output is correct
33 Correct 16 ms 29268 KB Output is correct
34 Correct 16 ms 29304 KB Output is correct
35 Correct 17 ms 29276 KB Output is correct
36 Correct 16 ms 29396 KB Output is correct
37 Correct 16 ms 29380 KB Output is correct
38 Correct 15 ms 29396 KB Output is correct
39 Correct 17 ms 29396 KB Output is correct
40 Correct 16 ms 29360 KB Output is correct
41 Correct 17 ms 29404 KB Output is correct
42 Correct 16 ms 29320 KB Output is correct
43 Correct 15 ms 29396 KB Output is correct
44 Correct 16 ms 29248 KB Output is correct
45 Correct 241 ms 91296 KB Output is correct
46 Correct 252 ms 90464 KB Output is correct
47 Correct 276 ms 90000 KB Output is correct
48 Correct 289 ms 91100 KB Output is correct
49 Correct 260 ms 89412 KB Output is correct
50 Correct 249 ms 89364 KB Output is correct
51 Correct 315 ms 89740 KB Output is correct
52 Correct 288 ms 90896 KB Output is correct
53 Correct 241 ms 90572 KB Output is correct
54 Correct 336 ms 110128 KB Output is correct
55 Correct 348 ms 107416 KB Output is correct
56 Correct 347 ms 105932 KB Output is correct
57 Correct 375 ms 105496 KB Output is correct
58 Correct 362 ms 110168 KB Output is correct
59 Correct 363 ms 110044 KB Output is correct
60 Correct 192 ms 109812 KB Output is correct
61 Correct 349 ms 121816 KB Output is correct
62 Correct 336 ms 111052 KB Output is correct
63 Correct 360 ms 120168 KB Output is correct
64 Correct 364 ms 118100 KB Output is correct
65 Correct 338 ms 111332 KB Output is correct
66 Correct 366 ms 123380 KB Output is correct