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답안 #1049796

# 제출 시각 아이디 문제 언어 결과 실행 시간 메모리
1049796 2024-08-09T05:10:43 Z 정민찬(#11048) 별자리 3 (JOI20_constellation3) C++17
100 / 100
 541 ms 117188 KB 
#include <bits/stdc++.h>
 
using namespace std;
typedef long long ll;
typedef long double ld;
typedef pair<ll,ll> pll;

const ll inf = 2e18;

struct LazySegmentTree{
    vector<ll> tree;
    vector<ll> lazy;
    void init(ll n) {
        ll sz = 1 << __lg(n-1) + 2;
        tree.assign(sz, 0);
        lazy.assign(sz, 0);
    }
    void propagate(ll node, ll s, ll e) {
        tree[node] += lazy[node];
        if (s != e) {
            lazy[node*2] += lazy[node];
            lazy[node*2+1] += lazy[node];
        }
        lazy[node] = 0;
    }
    void update(ll node, ll s, ll e, ll l, ll r, ll val) {
        propagate(node, s, e);
        if (l > e || s > r) return;
        if (l <= s && e <= r) {
            lazy[node] = val;
            propagate(node, s, e);
            return;
        }
        ll mid = s + e >> 1;
        update(node*2, s, mid, l, r, val);
        update(node*2+1, mid+1, e, l, r, val);
        tree[node] = max(tree[node*2], tree[node*2+1]);
    }
    ll query(ll node, ll s, ll e, ll tar) {
        propagate(node, s, e);
        if (s > tar || tar > e) return -inf;
        if (s == e) return tree[node];
        ll mid = s + e >> 1;
        return max(query(node*2, s, mid, tar), query(node*2+1, mid+1, e, tar));
    }
};

struct SegmentTree{
    vector<pll> tree;
    void init(ll n) {
        ll sz = 1 << __lg(n-1) + 2;
        tree.assign(sz, make_pair(0, 0));
    }
    void update(ll node, ll s, ll e, ll tar, pll val) {
        if (s > tar || tar > e) return;
        if (s == e) {
            tree[node] = val;
            return;
        }
        ll mid = s + e >> 1;
        update(node*2, s, mid, tar, val);
        update(node*2+1, mid+1, e, tar, val);
        tree[node] = min(tree[node*2], tree[node*2+1]);
    }
    pll query(ll node, ll s, ll e, ll l, ll r) {
        if (l > e || s > r) return {inf, -1};
        if (l <= s && e <= r) return tree[node];
        ll mid = s + e >> 1;
        return min(query(node*2, s, mid, l, r), query(node*2+1, mid+1, e, l, r));
    }
};

ll N, M;
ll C[200010];
ll A[200010];
pll coor[200010];
vector<pll> t;

SegmentTree hseg, qseg;
LazySegmentTree seg;

ll cal(ll l, ll r) {
    ll hi = hseg.query(1, 1, N, l, r).first;
    ll s = lower_bound(t.begin(), t.end(), make_pair(l, -1LL)) - t.begin() + 1;
    ll e = upper_bound(t.begin(), t.end(), make_pair(r, inf)) - t.begin();
    vector<ll> cur;
    while (true) {
        pll ret = qseg.query(1, 1, M, s, e);
        if (ret.first > hi) break;
        cur.push_back(ret.second);
        ll idx = lower_bound(t.begin(), t.end(), make_pair(coor[ret.second].first, ret.second)) - t.begin() + 1;
        qseg.update(1, 1, M, idx, make_pair(inf, -1));
    }
    vector<ll> sep = {l-1};
    while (true) {
        pll ret = hseg.query(1, 1, N, l, r);
        if (ret.first > hi) break;
        sep.push_back(ret.second);
        hseg.update(1, 1, N, ret.second, make_pair(inf, -1));
    }
    sep.push_back(r+1);
    
    ll sum = 0;
    for (ll i=0; i+1<sep.size(); i++) {
        if (sep[i] + 1 <= sep[i+1] - 1) {
            sum += cal(sep[i]+1, sep[i+1]-1);
        }
    }
    ll mx = sum;
    for (auto &i : cur) {
        mx = max(mx, sum + seg.query(1, 1, N, coor[i].first) + C[i]);
    }
    seg.update(1, 1, N, l, r, sum - mx);
    return mx;
}

int main() {
    ios_base :: sync_with_stdio(false); cin.tie(NULL);
    cin >> N;
    for (ll i=1; i<=N; i++) {
        cin >> A[i];
        A[i] = N - A[i];
    }
    cin >> M;
    ll tot = 0;
    for (ll i=1; i<=M; i++) {
        cin >> coor[i].first >> coor[i].second;
        cin >> C[i];
        coor[i].second = N - coor[i].second + 1;
        t.push_back({coor[i].first, i});
        tot += C[i];
    }
    sort(t.begin(), t.end());
    qseg.init(M);
    hseg.init(N);
    seg.init(N);
    for (ll i=1; i<=M; i++) {
        ll idx = lower_bound(t.begin(), t.end(), make_pair(coor[i].first, i)) - t.begin() + 1;
        qseg.update(1, 1, M, idx, make_pair(coor[i].second, i));
    }
    for (ll i=1; i<=N; i++) {
        hseg.update(1, 1, N, i, make_pair(A[i], i));
    }
    cout << tot - cal(1, N) << '\n';
}

Compilation message

constellation3.cpp: In member function 'void LazySegmentTree::init(ll)':
constellation3.cpp:14:32: warning: suggest parentheses around '+' inside '<<' [-Wparentheses]
   14 |         ll sz = 1 << __lg(n-1) + 2;
      |                      ~~~~~~~~~~^~~
constellation3.cpp: In member function 'void LazySegmentTree::update(ll, ll, ll, ll, ll, ll)':
constellation3.cpp:34:20: warning: suggest parentheses around '+' inside '>>' [-Wparentheses]
   34 |         ll mid = s + e >> 1;
      |                  ~~^~~
constellation3.cpp: In member function 'll LazySegmentTree::query(ll, ll, ll, ll)':
constellation3.cpp:43:20: warning: suggest parentheses around '+' inside '>>' [-Wparentheses]
   43 |         ll mid = s + e >> 1;
      |                  ~~^~~
constellation3.cpp: In member function 'void SegmentTree::init(ll)':
constellation3.cpp:51:32: warning: suggest parentheses around '+' inside '<<' [-Wparentheses]
   51 |         ll sz = 1 << __lg(n-1) + 2;
      |                      ~~~~~~~~~~^~~
constellation3.cpp: In member function 'void SegmentTree::update(ll, ll, ll, ll, pll)':
constellation3.cpp:60:20: warning: suggest parentheses around '+' inside '>>' [-Wparentheses]
   60 |         ll mid = s + e >> 1;
      |                  ~~^~~
constellation3.cpp: In member function 'pll SegmentTree::query(ll, ll, ll, ll, ll)':
constellation3.cpp:68:20: warning: suggest parentheses around '+' inside '>>' [-Wparentheses]
   68 |         ll mid = s + e >> 1;
      |                  ~~^~~
constellation3.cpp: In function 'll cal(ll, ll)':
constellation3.cpp:104:21: warning: comparison of integer expressions of different signedness: 'll' {aka 'long long int'} and 'std::vector<long long int>::size_type' {aka 'long unsigned int'} [-Wsign-compare]
  104 |     for (ll i=0; i+1<sep.size(); i++) {
      |                  ~~~^~~~~~~~~~~

Subtask #1
14.0 / 14.0

# 결과 실행 시간 메모리 Grader output
1 Correct 1 ms 2396 KB Output is correct
2 Correct 1 ms 2396 KB Output is correct
3 Correct 1 ms 2396 KB Output is correct
4 Correct 1 ms 2396 KB Output is correct
5 Correct 1 ms 2396 KB Output is correct
6 Correct 1 ms 2396 KB Output is correct
7 Correct 1 ms 2396 KB Output is correct
8 Correct 1 ms 2396 KB Output is correct
9 Correct 1 ms 2396 KB Output is correct
10 Correct 1 ms 2652 KB Output is correct
11 Correct 1 ms 2396 KB Output is correct
12 Correct 1 ms 2396 KB Output is correct
13 Correct 1 ms 2396 KB Output is correct
14 Correct 1 ms 2396 KB Output is correct
15 Correct 1 ms 2396 KB Output is correct
16 Correct 1 ms 2652 KB Output is correct
17 Correct 1 ms 2396 KB Output is correct
18 Correct 1 ms 2652 KB Output is correct
19 Correct 1 ms 2396 KB Output is correct
20 Correct 1 ms 2396 KB Output is correct
21 Correct 1 ms 2652 KB Output is correct
22 Correct 1 ms 2520 KB Output is correct

Subtask #2
21.0 / 21.0

# 결과 실행 시간 메모리 Grader output
1 Correct 1 ms 2396 KB Output is correct
2 Correct 1 ms 2396 KB Output is correct
3 Correct 1 ms 2396 KB Output is correct
4 Correct 1 ms 2396 KB Output is correct
5 Correct 1 ms 2396 KB Output is correct
6 Correct 1 ms 2396 KB Output is correct
7 Correct 1 ms 2396 KB Output is correct
8 Correct 1 ms 2396 KB Output is correct
9 Correct 1 ms 2396 KB Output is correct
10 Correct 1 ms 2652 KB Output is correct
11 Correct 1 ms 2396 KB Output is correct
12 Correct 1 ms 2396 KB Output is correct
13 Correct 1 ms 2396 KB Output is correct
14 Correct 1 ms 2396 KB Output is correct
15 Correct 1 ms 2396 KB Output is correct
16 Correct 1 ms 2652 KB Output is correct
17 Correct 1 ms 2396 KB Output is correct
18 Correct 1 ms 2652 KB Output is correct
19 Correct 1 ms 2396 KB Output is correct
20 Correct 1 ms 2396 KB Output is correct
21 Correct 1 ms 2652 KB Output is correct
22 Correct 1 ms 2520 KB Output is correct
23 Correct 3 ms 2652 KB Output is correct
24 Correct 3 ms 2652 KB Output is correct
25 Correct 3 ms 2652 KB Output is correct
26 Correct 4 ms 2780 KB Output is correct
27 Correct 3 ms 2648 KB Output is correct
28 Correct 3 ms 2652 KB Output is correct
29 Correct 3 ms 2652 KB Output is correct
30 Correct 3 ms 2652 KB Output is correct
31 Correct 3 ms 2652 KB Output is correct
32 Correct 4 ms 3164 KB Output is correct
33 Correct 3 ms 3040 KB Output is correct
34 Correct 3 ms 3044 KB Output is correct
35 Correct 3 ms 2904 KB Output is correct
36 Correct 2 ms 2648 KB Output is correct
37 Correct 2 ms 2648 KB Output is correct
38 Correct 3 ms 3428 KB Output is correct
39 Correct 3 ms 2652 KB Output is correct
40 Correct 3 ms 3124 KB Output is correct
41 Correct 3 ms 2780 KB Output is correct
42 Correct 3 ms 2652 KB Output is correct
43 Correct 4 ms 3164 KB Output is correct
44 Correct 3 ms 2652 KB Output is correct

Subtask #3
65.0 / 65.0

# 결과 실행 시간 메모리 Grader output
1 Correct 1 ms 2396 KB Output is correct
2 Correct 1 ms 2396 KB Output is correct
3 Correct 1 ms 2396 KB Output is correct
4 Correct 1 ms 2396 KB Output is correct
5 Correct 1 ms 2396 KB Output is correct
6 Correct 1 ms 2396 KB Output is correct
7 Correct 1 ms 2396 KB Output is correct
8 Correct 1 ms 2396 KB Output is correct
9 Correct 1 ms 2396 KB Output is correct
10 Correct 1 ms 2652 KB Output is correct
11 Correct 1 ms 2396 KB Output is correct
12 Correct 1 ms 2396 KB Output is correct
13 Correct 1 ms 2396 KB Output is correct
14 Correct 1 ms 2396 KB Output is correct
15 Correct 1 ms 2396 KB Output is correct
16 Correct 1 ms 2652 KB Output is correct
17 Correct 1 ms 2396 KB Output is correct
18 Correct 1 ms 2652 KB Output is correct
19 Correct 1 ms 2396 KB Output is correct
20 Correct 1 ms 2396 KB Output is correct
21 Correct 1 ms 2652 KB Output is correct
22 Correct 1 ms 2520 KB Output is correct
23 Correct 3 ms 2652 KB Output is correct
24 Correct 3 ms 2652 KB Output is correct
25 Correct 3 ms 2652 KB Output is correct
26 Correct 4 ms 2780 KB Output is correct
27 Correct 3 ms 2648 KB Output is correct
28 Correct 3 ms 2652 KB Output is correct
29 Correct 3 ms 2652 KB Output is correct
30 Correct 3 ms 2652 KB Output is correct
31 Correct 3 ms 2652 KB Output is correct
32 Correct 4 ms 3164 KB Output is correct
33 Correct 3 ms 3040 KB Output is correct
34 Correct 3 ms 3044 KB Output is correct
35 Correct 3 ms 2904 KB Output is correct
36 Correct 2 ms 2648 KB Output is correct
37 Correct 2 ms 2648 KB Output is correct
38 Correct 3 ms 3428 KB Output is correct
39 Correct 3 ms 2652 KB Output is correct
40 Correct 3 ms 3124 KB Output is correct
41 Correct 3 ms 2780 KB Output is correct
42 Correct 3 ms 2652 KB Output is correct
43 Correct 4 ms 3164 KB Output is correct
44 Correct 3 ms 2652 KB Output is correct
45 Correct 367 ms 40384 KB Output is correct
46 Correct 375 ms 40128 KB Output is correct
47 Correct 386 ms 40368 KB Output is correct
48 Correct 370 ms 40376 KB Output is correct
49 Correct 343 ms 39832 KB Output is correct
50 Correct 357 ms 39868 KB Output is correct
51 Correct 361 ms 39872 KB Output is correct
52 Correct 359 ms 40380 KB Output is correct
53 Correct 365 ms 39876 KB Output is correct
54 Correct 541 ms 93100 KB Output is correct
55 Correct 513 ms 80068 KB Output is correct
56 Correct 461 ms 71616 KB Output is correct
57 Correct 473 ms 66496 KB Output is correct
58 Correct 282 ms 44740 KB Output is correct
59 Correct 286 ms 44224 KB Output is correct
60 Correct 309 ms 117188 KB Output is correct
61 Correct 342 ms 39852 KB Output is correct
62 Correct 523 ms 91068 KB Output is correct
63 Correct 333 ms 40176 KB Output is correct
64 Correct 333 ms 39432 KB Output is correct
65 Correct 496 ms 91772 KB Output is correct
66 Correct 345 ms 39872 KB Output is correct