oj.uz

Submission #783037

# Submission time Handle Problem Language Result Execution time Memory
783037 2023-07-14T14:26:30 Z RushB LIS (INOI20_lis) C++17
100 / 100
 1084 ms 43152 KB 
#include <bits/stdc++.h>
using namespace std;
#define FOR(i, a, b) for (int i = (a); i < (b); i++) 
using ar = array<int, 2>;
const int INF = 1ll << 30;
const int N = 1e6 + 6;
int n, x[N], p[N], q, ans[N], S[4 * N], delta[4 * N];
ar M[1500], a[N], b[N];

void add(int v, int l, int r, int L, int R, int d) {
        if (R <= l || r <= L) return;
        if (L <= l && r <= R) { 
                delta[v] += d, S[v] += d;
                return;
        }
        int m = l + r >> 1;
        add(v << 1, l, m, L, R, d), add(v << 1 | 1, m, r, L, R, d);
        S[v] = min(S[v << 1], S[v << 1 | 1]) + delta[v];
}
int find(int v, int l, int r) {
        if (l + 1 == r) {
                S[v] = INF;
                if (l + 1 != q) add(1, 0, q, l + 1, q, -1);
                return l;
        }
        int m = l + r >> 1, x;
        if (S[v << 1 | 1] <= S[v << 1]) x = find(v << 1 | 1, m, r);
        else x = find(v << 1, l, m);
        S[v] = min(S[v << 1], S[v << 1 | 1]) + delta[v];
        return x;
}

void seq() {
        FOR(i, 0, q) add(1, 0, q, i, i + 1, p[i]);
        FOR(i, 0, q) {
                int t = find(1, 0, q);
                a[i][0] = t, a[i][1] = x[t];
        }
}
void solve() {
        while (true) {
                ar lis = {0, INF};
                fill(M, M + 1500, lis);
                FOR(i, 0, q) {
                        ar p = *max_element(M, M + a[i][1]);
                        M[a[i][1]] = max(M[a[i][1]], ar{p[0] + 1, min(p[1], -a[i][0])});
                }
                lis = *max_element(M, M + 1500);
                for (int i = q - 1; i >= -lis[1]; i--) ans[i] = lis[0];
                if (!lis[1]) return;
                int ptr = 0;
                FOR(i, 0, q) if (a[i][0] < -lis[1]) b[ptr++] = a[i];
                q = ptr;
                copy(b, b + ptr, a);
        }
}

signed main() {
        ios::sync_with_stdio(0), cin.tie(0);
        cin >> q;
        int tq = q;
        vector<int> X;
        FOR(i, 0, q) {
                cin >> p[i] >> x[i];
                X.push_back(x[i]);
        }
        sort(X.begin(), X.end());
        X.resize(unique(X.begin(), X.end()) - X.begin());
        FOR(i, 0, q)
                x[i] = lower_bound(X.begin(), X.end(), x[i]) - X.begin() + 1;
        seq(), solve();
        FOR(i, 0, tq) cout << ans[i] << '\n';
}

Compilation message

Main.cpp: In function 'void add(int, int, int, int, int, int)':
Main.cpp:16:19: warning: suggest parentheses around '+' inside '>>' [-Wparentheses]
   16 |         int m = l + r >> 1;
      |                 ~~^~~
Main.cpp: In function 'int find(int, int, int)':
Main.cpp:26:19: warning: suggest parentheses around '+' inside '>>' [-Wparentheses]
   26 |         int m = l + r >> 1, x;
      |                 ~~^~~

Subtask #1
20.0 / 20.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 340 KB Output is correct
2 Correct 0 ms 340 KB Output is correct
3 Correct 5 ms 472 KB Output is correct
4 Correct 6 ms 464 KB Output is correct
5 Correct 10 ms 468 KB Output is correct
6 Correct 3 ms 468 KB Output is correct
7 Correct 6 ms 468 KB Output is correct
8 Correct 4 ms 468 KB Output is correct
9 Correct 6 ms 468 KB Output is correct
10 Correct 4 ms 468 KB Output is correct
11 Correct 6 ms 508 KB Output is correct
12 Correct 3 ms 468 KB Output is correct
13 Correct 7 ms 468 KB Output is correct
14 Correct 8 ms 512 KB Output is correct
15 Correct 3 ms 468 KB Output is correct
16 Correct 7 ms 468 KB Output is correct
17 Correct 9 ms 468 KB Output is correct
18 Correct 7 ms 728 KB Output is correct

Subtask #2
80.0 / 80.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 340 KB Output is correct
2 Correct 0 ms 340 KB Output is correct
3 Correct 5 ms 472 KB Output is correct
4 Correct 6 ms 464 KB Output is correct
5 Correct 10 ms 468 KB Output is correct
6 Correct 3 ms 468 KB Output is correct
7 Correct 6 ms 468 KB Output is correct
8 Correct 4 ms 468 KB Output is correct
9 Correct 6 ms 468 KB Output is correct
10 Correct 4 ms 468 KB Output is correct
11 Correct 6 ms 508 KB Output is correct
12 Correct 3 ms 468 KB Output is correct
13 Correct 7 ms 468 KB Output is correct
14 Correct 8 ms 512 KB Output is correct
15 Correct 3 ms 468 KB Output is correct
16 Correct 7 ms 468 KB Output is correct
17 Correct 9 ms 468 KB Output is correct
18 Correct 7 ms 728 KB Output is correct
19 Correct 119 ms 10740 KB Output is correct
20 Correct 114 ms 9800 KB Output is correct
21 Correct 113 ms 10668 KB Output is correct
22 Correct 112 ms 10124 KB Output is correct
23 Correct 137 ms 10196 KB Output is correct
24 Correct 135 ms 10116 KB Output is correct
25 Correct 136 ms 10196 KB Output is correct
26 Correct 151 ms 10084 KB Output is correct
27 Correct 135 ms 10188 KB Output is correct
28 Correct 136 ms 10096 KB Output is correct
29 Correct 139 ms 10168 KB Output is correct
30 Correct 136 ms 10192 KB Output is correct
31 Correct 137 ms 10184 KB Output is correct
32 Correct 137 ms 10200 KB Output is correct
33 Correct 142 ms 10244 KB Output is correct
34 Correct 139 ms 10168 KB Output is correct
35 Correct 139 ms 10184 KB Output is correct
36 Correct 154 ms 10184 KB Output is correct
37 Correct 137 ms 10184 KB Output is correct
38 Correct 135 ms 10112 KB Output is correct
39 Correct 140 ms 10184 KB Output is correct
40 Correct 153 ms 10200 KB Output is correct
41 Correct 162 ms 10088 KB Output is correct
42 Correct 21 ms 2084 KB Output is correct
43 Correct 87 ms 9512 KB Output is correct
44 Correct 74 ms 6216 KB Output is correct
45 Correct 22 ms 1408 KB Output is correct
46 Correct 4 ms 596 KB Output is correct
47 Correct 73 ms 5296 KB Output is correct
48 Correct 56 ms 3484 KB Output is correct
49 Correct 15 ms 1064 KB Output is correct
50 Correct 6 ms 596 KB Output is correct
51 Correct 50 ms 3224 KB Output is correct
52 Correct 122 ms 7260 KB Output is correct
53 Correct 100 ms 6620 KB Output is correct
54 Correct 85 ms 6124 KB Output is correct
55 Correct 23 ms 1872 KB Output is correct
56 Correct 62 ms 5580 KB Output is correct
57 Correct 27 ms 2228 KB Output is correct
58 Correct 25 ms 2092 KB Output is correct
59 Correct 7 ms 852 KB Output is correct
60 Correct 99 ms 6844 KB Output is correct
61 Correct 2 ms 468 KB Output is correct
62 Correct 42 ms 3660 KB Output is correct
63 Correct 26 ms 2160 KB Output is correct
64 Correct 68 ms 5644 KB Output is correct
65 Correct 60 ms 5180 KB Output is correct
66 Correct 16 ms 1692 KB Output is correct
67 Correct 47 ms 3696 KB Output is correct
68 Correct 32 ms 3104 KB Output is correct
69 Correct 56 ms 5196 KB Output is correct
70 Correct 15 ms 1236 KB Output is correct
71 Correct 983 ms 43088 KB Output is correct
72 Correct 1000 ms 43136 KB Output is correct
73 Correct 1004 ms 43040 KB Output is correct
74 Correct 960 ms 43152 KB Output is correct
75 Correct 983 ms 43052 KB Output is correct
76 Correct 1084 ms 43056 KB Output is correct