oj.uz

답안 #733261

# 제출 시각 아이디 문제 언어 결과 실행 시간 메모리
733261 2023-04-30T10:09:31 Z puppy 송신탑 (IOI22_towers) C++17
23 / 100
 4000 ms 5424 KB 
#include "towers.h"

#include <vector>
#include <algorithm>
#include <iostream>
#include <cmath>
#include <queue>
using namespace std;
namespace {
    int N, K;
    int H[100005];
}

void init(int N, std::vector<int> H) {
    ::N = N;
    ::K = -1;
    for (int i = 0; i < N; i++) {
        ::H[i] = H[i];
    }
}
int dp[100005];
struct maxseg
{
    vector<int> tree;
    maxseg(int n)
    {
        int sz = 1 << ((int)ceil(log2(n))+1);
        tree.resize(sz);
    }
    int init(int s, int e, int node, vector<int> &vc)
    {
        if (s == e) return tree[node] = vc[s];
        else return tree[node] = max(init(s, (s+e)/2, 2*node, vc), init((s+e)/2+1, e, 2*node+1, vc));
    }
    void upd(int s, int e, int node, int id, int val)
    {
        if (e < id || id < s) return;
        if (s == e) {
            tree[node] = val;
            return;
        }
        upd(s, (s+e)/2, 2*node, id, val);
        upd((s+e)/2+1, e, 2*node+1, id, val);
        tree[node] = max(tree[2*node], tree[2*node+1]);
    }
    int query(int s, int e, int node, int l, int r)
    {
        if (e < l || r < s) return 0;
        if (l <= s && e <= r) return tree[node];
        return max(query(s, (s+e)/2, 2*node, l, r), query((s+e)/2+1, e, 2*node+1, l, r));
    }
};
int max_towers(int L, int R, int D) {
    int M = R - L + 1;
    vector<int> A(M);
    for (int i = L; i <= R; i++) A[i - L] = H[i];
    maxseg seg(M), seg2(M);
    seg.init(0, M-1, 1, A);
    dp[0] = 1;
    priority_queue<pair<int, int>, vector<pair<int, int>>, greater<pair<int, int>>> pq;
    pq.push(make_pair(A[0], 0));
    for (int i = 1; i < M; i++) {
        //키가 A[i] - D 이하인 애들을 모두 해방시키자
        while (!pq.empty() && pq.top().first <= A[i] - D) {
            seg2.upd(0, M-1, 1, pq.top().second, dp[pq.top().second]);
            pq.pop();
        }
        int l = 0, r = i - 1; //max(k ... i) >= A[i] + D인 최대 k 찾기
        while (l < r) {
            int m = l + r + 1 >> 1;
            if (seg.query(0, M-1, 1, m, i) >= A[i] + D) {
                l = m;
            }
            else r = m - 1;
        }
        if (seg.query(0, M-1, 1, l, i) < A[i] + D) l = -1;
        dp[i] = seg2.query(0, M-1, 1, 0, l) + 1;
        pq.push(make_pair(A[i], i));
    }
    int ans = 0;
    for (int i = 0; i < M; i++) ans = max(ans, dp[i]);
    return ans;
    //0부터 M-1까지 A에서 문제 풀기
}

Compilation message

towers.cpp: In function 'int max_towers(int, int, int)':
towers.cpp:70:27: warning: suggest parentheses around '+' inside '>>' [-Wparentheses]
   70 |             int m = l + r + 1 >> 1;
      |                     ~~~~~~^~~

Subtask #1
0 / 4.0

# 결과 실행 시간 메모리 Grader output
1 Execution timed out 4069 ms 3088 KB Time limit exceeded
2 Halted 0 ms 0 KB -

Subtask #2
11.0 / 11.0

# 결과 실행 시간 메모리 Grader output
1 Correct 1 ms 208 KB Output is correct
2 Correct 4 ms 356 KB Output is correct
3 Correct 2 ms 284 KB Output is correct
4 Correct 3 ms 336 KB Output is correct
5 Correct 4 ms 336 KB Output is correct
6 Correct 2 ms 208 KB Output is correct
7 Correct 2 ms 336 KB Output is correct
8 Correct 1 ms 208 KB Output is correct
9 Correct 3 ms 336 KB Output is correct
10 Correct 1 ms 208 KB Output is correct
11 Correct 1 ms 336 KB Output is correct
12 Correct 2 ms 208 KB Output is correct
13 Correct 2 ms 336 KB Output is correct
14 Correct 1 ms 336 KB Output is correct
15 Correct 1 ms 208 KB Output is correct
16 Correct 2 ms 336 KB Output is correct
17 Correct 1 ms 336 KB Output is correct
18 Correct 1 ms 208 KB Output is correct
19 Correct 2 ms 336 KB Output is correct
20 Correct 4 ms 336 KB Output is correct
21 Correct 4 ms 336 KB Output is correct
22 Correct 6 ms 336 KB Output is correct
23 Correct 4 ms 336 KB Output is correct
24 Correct 3 ms 336 KB Output is correct
25 Correct 2 ms 336 KB Output is correct
26 Correct 3 ms 336 KB Output is correct
27 Correct 4 ms 336 KB Output is correct
28 Correct 4 ms 336 KB Output is correct
29 Correct 3 ms 336 KB Output is correct
30 Correct 5 ms 396 KB Output is correct
31 Correct 3 ms 336 KB Output is correct
32 Correct 4 ms 336 KB Output is correct
33 Correct 4 ms 336 KB Output is correct
34 Correct 5 ms 336 KB Output is correct
35 Correct 4 ms 336 KB Output is correct

Subtask #3
12.0 / 12.0

# 결과 실행 시간 메모리 Grader output
1 Correct 1 ms 208 KB Output is correct
2 Correct 4 ms 356 KB Output is correct
3 Correct 2 ms 284 KB Output is correct
4 Correct 3 ms 336 KB Output is correct
5 Correct 4 ms 336 KB Output is correct
6 Correct 2 ms 208 KB Output is correct
7 Correct 2 ms 336 KB Output is correct
8 Correct 1 ms 208 KB Output is correct
9 Correct 3 ms 336 KB Output is correct
10 Correct 1 ms 208 KB Output is correct
11 Correct 1 ms 336 KB Output is correct
12 Correct 2 ms 208 KB Output is correct
13 Correct 2 ms 336 KB Output is correct
14 Correct 1 ms 336 KB Output is correct
15 Correct 1 ms 208 KB Output is correct
16 Correct 2 ms 336 KB Output is correct
17 Correct 1 ms 336 KB Output is correct
18 Correct 1 ms 208 KB Output is correct
19 Correct 2 ms 336 KB Output is correct
20 Correct 4 ms 336 KB Output is correct
21 Correct 4 ms 336 KB Output is correct
22 Correct 6 ms 336 KB Output is correct
23 Correct 4 ms 336 KB Output is correct
24 Correct 3 ms 336 KB Output is correct
25 Correct 2 ms 336 KB Output is correct
26 Correct 3 ms 336 KB Output is correct
27 Correct 4 ms 336 KB Output is correct
28 Correct 4 ms 336 KB Output is correct
29 Correct 3 ms 336 KB Output is correct
30 Correct 5 ms 396 KB Output is correct
31 Correct 3 ms 336 KB Output is correct
32 Correct 4 ms 336 KB Output is correct
33 Correct 4 ms 336 KB Output is correct
34 Correct 5 ms 336 KB Output is correct
35 Correct 4 ms 336 KB Output is correct
36 Correct 55 ms 1472 KB Output is correct
37 Correct 100 ms 2868 KB Output is correct
38 Correct 67 ms 1484 KB Output is correct
39 Correct 74 ms 2224 KB Output is correct
40 Correct 36 ms 1472 KB Output is correct
41 Correct 233 ms 4624 KB Output is correct
42 Correct 15 ms 1448 KB Output is correct
43 Correct 179 ms 2904 KB Output is correct
44 Correct 36 ms 1640 KB Output is correct
45 Correct 16 ms 1448 KB Output is correct
46 Correct 24 ms 1456 KB Output is correct
47 Correct 100 ms 2348 KB Output is correct
48 Correct 64 ms 1704 KB Output is correct
49 Correct 26 ms 1344 KB Output is correct
50 Correct 57 ms 2076 KB Output is correct
51 Correct 114 ms 2404 KB Output is correct
52 Correct 278 ms 3916 KB Output is correct
53 Correct 297 ms 3912 KB Output is correct
54 Correct 298 ms 3880 KB Output is correct
55 Correct 285 ms 5424 KB Output is correct
56 Correct 313 ms 3908 KB Output is correct
57 Correct 306 ms 4812 KB Output is correct
58 Correct 314 ms 4696 KB Output is correct
59 Correct 292 ms 4256 KB Output is correct
60 Correct 307 ms 3912 KB Output is correct
61 Correct 286 ms 4420 KB Output is correct
62 Correct 290 ms 4736 KB Output is correct
63 Correct 280 ms 4232 KB Output is correct
64 Correct 250 ms 4988 KB Output is correct
65 Correct 265 ms 5236 KB Output is correct
66 Correct 247 ms 4344 KB Output is correct
67 Correct 302 ms 5268 KB Output is correct

Subtask #4
0 / 14.0

# 결과 실행 시간 메모리 Grader output
1 Execution timed out 4089 ms 3952 KB Time limit exceeded
2 Halted 0 ms 0 KB -

Subtask #5
0 / 17.0

# 결과 실행 시간 메모리 Grader output
1 Execution timed out 4078 ms 1664 KB Time limit exceeded
2 Halted 0 ms 0 KB -

Subtask #6
0 / 19.0

# 결과 실행 시간 메모리 Grader output
1 Correct 1 ms 208 KB Output is correct
2 Correct 4 ms 356 KB Output is correct
3 Correct 2 ms 284 KB Output is correct
4 Correct 3 ms 336 KB Output is correct
5 Correct 4 ms 336 KB Output is correct
6 Correct 2 ms 208 KB Output is correct
7 Correct 2 ms 336 KB Output is correct
8 Correct 1 ms 208 KB Output is correct
9 Correct 3 ms 336 KB Output is correct
10 Correct 1 ms 208 KB Output is correct
11 Correct 1 ms 336 KB Output is correct
12 Correct 2 ms 208 KB Output is correct
13 Correct 2 ms 336 KB Output is correct
14 Correct 1 ms 336 KB Output is correct
15 Correct 1 ms 208 KB Output is correct
16 Correct 2 ms 336 KB Output is correct
17 Correct 1 ms 336 KB Output is correct
18 Correct 1 ms 208 KB Output is correct
19 Correct 2 ms 336 KB Output is correct
20 Correct 4 ms 336 KB Output is correct
21 Correct 4 ms 336 KB Output is correct
22 Correct 6 ms 336 KB Output is correct
23 Correct 4 ms 336 KB Output is correct
24 Correct 3 ms 336 KB Output is correct
25 Correct 2 ms 336 KB Output is correct
26 Correct 3 ms 336 KB Output is correct
27 Correct 4 ms 336 KB Output is correct
28 Correct 4 ms 336 KB Output is correct
29 Correct 3 ms 336 KB Output is correct
30 Correct 5 ms 396 KB Output is correct
31 Correct 3 ms 336 KB Output is correct
32 Correct 4 ms 336 KB Output is correct
33 Correct 4 ms 336 KB Output is correct
34 Correct 5 ms 336 KB Output is correct
35 Correct 4 ms 336 KB Output is correct
36 Correct 55 ms 1472 KB Output is correct
37 Correct 100 ms 2868 KB Output is correct
38 Correct 67 ms 1484 KB Output is correct
39 Correct 74 ms 2224 KB Output is correct
40 Correct 36 ms 1472 KB Output is correct
41 Correct 233 ms 4624 KB Output is correct
42 Correct 15 ms 1448 KB Output is correct
43 Correct 179 ms 2904 KB Output is correct
44 Correct 36 ms 1640 KB Output is correct
45 Correct 16 ms 1448 KB Output is correct
46 Correct 24 ms 1456 KB Output is correct
47 Correct 100 ms 2348 KB Output is correct
48 Correct 64 ms 1704 KB Output is correct
49 Correct 26 ms 1344 KB Output is correct
50 Correct 57 ms 2076 KB Output is correct
51 Correct 114 ms 2404 KB Output is correct
52 Correct 278 ms 3916 KB Output is correct
53 Correct 297 ms 3912 KB Output is correct
54 Correct 298 ms 3880 KB Output is correct
55 Correct 285 ms 5424 KB Output is correct
56 Correct 313 ms 3908 KB Output is correct
57 Correct 306 ms 4812 KB Output is correct
58 Correct 314 ms 4696 KB Output is correct
59 Correct 292 ms 4256 KB Output is correct
60 Correct 307 ms 3912 KB Output is correct
61 Correct 286 ms 4420 KB Output is correct
62 Correct 290 ms 4736 KB Output is correct
63 Correct 280 ms 4232 KB Output is correct
64 Correct 250 ms 4988 KB Output is correct
65 Correct 265 ms 5236 KB Output is correct
66 Correct 247 ms 4344 KB Output is correct
67 Correct 302 ms 5268 KB Output is correct
68 Execution timed out 4089 ms 3952 KB Time limit exceeded
69 Halted 0 ms 0 KB -

Subtask #7
0 / 23.0

# 결과 실행 시간 메모리 Grader output
1 Execution timed out 4069 ms 3088 KB Time limit exceeded
2 Halted 0 ms 0 KB -