oj.uz

답안 #753187

# 제출 시각 아이디 문제 언어 결과 실행 시간 메모리
753187 2023-06-04T19:24:07 Z Olympia K개의 묶음 (IZhO14_blocks) C++17
53 / 100
 1000 ms 30324 KB 
#include <vector>
#include <iostream>
#include <cassert>
#include <cmath>
#include <map>
#include <set>
using namespace std;
vector<int64_t> p;
struct SegmentTree {
    vector<int64_t> orig;
    vector<int64_t> vec;
    vector<int64_t> lazy;
    const int64_t INF = 1e18;
    void push (int dum) {
        if (lazy[dum] == -1) {
            return;
        }
        lazy[2 * dum + 1] = lazy[dum];
        lazy[2 * dum + 2] = lazy[dum];
        vec[2 * dum + 1] = lazy[dum] + orig[2 * dum + 1];
        vec[2 * dum + 2] = lazy[dum] + orig[2 * dum + 2];
        lazy[dum] = -1;
    }
    void upd (int dum, int tl, int tr, int l, int r, int64_t x) {
        if (tl >= l and tr <= r) {
            lazy[dum] = x;
            vec[dum] = orig[dum] + x;
            return;
        }
        if (tl > r or l > tr) {
            return;
        }
        push(dum);
        upd(2 * dum + 1, tl, (tl + tr)/2, l, r, x);
        upd(2 * dum + 2, (tl + tr)/2 + 1, tr, l, r, x);
        vec[dum] = min(vec[2 * dum + 1], vec[2 * dum + 2]);
    }
    int64_t query (int dum, int tl, int tr, int l, int r) {
        if (tl >= l and tr <= r) {
            return vec[dum];
        }
        if (tl > r or l > tr) {
            return INF;
        }
        push(dum);
        return min(query(2 * dum + 1, tl, (tl + tr)/2, l, r), query(2 * dum + 2, (tl + tr)/2 + 1, tr, l, r));
    }
    void upd (int l, int r, int64_t x) {
        upd(0, 0, (int)vec.size()/2 - 1, l, r, x);
    }
    int64_t query (int l, int r) {
        return query(0, 0, (int)vec.size()/2 - 1, l, r);
    }
    void build (int dum, int tl, int tr) {
        if (tl == tr) {
            orig[dum] = p[tl];
            return;
        }
        build(2 * dum + 1, tl, (tl + tr)/2);
        build(2 * dum + 2, (tl + tr)/2 + 1, tr);
        orig[dum] = min(orig[2 * dum + 1], orig[2 * dum + 2]);
    }
    SegmentTree () {
        while (__builtin_popcount(p.size()) != 1) {
            p.push_back(0);
        }
        int n = p.size();
        orig.assign(2 * n, 0);
        lazy.assign(2 * n, -1);
        build(0, 0, n - 1);
        vec = orig;
    }
};
struct SparseTable {
    vector<vector<int64_t>> dp;
    int64_t query (int l, int r) {
        int sz = log2(r - l + 1);
        return min(dp[l][sz], dp[r - (1 << sz) + 1][sz]);
    }
    SparseTable (vector<int64_t> a) {
        int n = a.size();
        dp.resize(n);
        for (int i = 0; i < n; i++) {
            dp[i].resize(25);
        }
        for (int j = 0; j < dp[0].size(); j++) {
            for (int i = 0; i < n; i++) {
                if (j == 0) {
                    dp[i][j] = a[i];
                } else {
                    dp[i][j] = min(dp[i][j - 1], dp[min(i + (1 << (j - 1)), (int)dp.size() - 1)][j - 1]);
                }
            }
        }
    }
};
int main () {
    ios_base::sync_with_stdio(false);
    cin.tie(NULL);
    int N, K;
    cin >> N >> K;
    vector<int64_t> arr(N);
    for (int i = 0; i < N; i++) {
        cin >> arr[i];
    }
    int64_t INF = 1e17;
    vector<int64_t> cur(N + 1);
    p.assign(N + 1, INF), cur.assign(N + 1, INF);
    for (int j = 1; j <= N; j++) {
        p[j] = ((j == 1) ? arr[0] : max(p[j - 1], arr[j - 1]));
    }
    for (int i = 0; i < arr.size(); i++) {
        arr[i] = -arr[i];
    }
    SparseTable st_a(arr);
    for (int i = 0; i < arr.size(); i++) {
        arr[i] = -arr[i];
    }
    for (int i = 2; i <= K; i++) {
        SegmentTree val;
        SparseTable st_p(p);
        for (int j = 1; j <= N; j++) {
            if (j == 1) {
                cur[j] = INF;
                int64_t myMax = 0;
                for (int l = j - 1; l >= 0; l--) {
                    myMax = max(myMax, arr[l]);
                    cur[j] = min(cur[j], p[l] + myMax);
                    val.upd(l, l, myMax);
                }
            } else {
                cur[j] = INF;
                int64_t myMax = 0;
                int ind = -1;
                int l = 0;
                int r = j - 1;
                while (l != r) {
                    int m = (l + r)/2;
                    if (st_a.query(m, j - 1) == -arr[j - 1]) {
                        r = m;
                    } else {
                        l = m + 1;
                    }
                }
                ind = l;
                val.upd(ind, j - 1, arr[j - 1]);
                cur[j] = min(cur[j], arr[j - 1] + st_p.query(ind, j - 1));
                cur[j] = min(cur[j], val.query(0, ind - 1));
            }
        }
        swap(cur, p);
    }
    cout << p[N];

}

Compilation message

blocks.cpp: In constructor 'SparseTable::SparseTable(std::vector<long int>)':
blocks.cpp:86:27: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<long int>::size_type' {aka 'long unsigned int'} [-Wsign-compare]
   86 |         for (int j = 0; j < dp[0].size(); j++) {
      |                         ~~^~~~~~~~~~~~~~
blocks.cpp: In function 'int main()':
blocks.cpp:112:23: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<long int>::size_type' {aka 'long unsigned int'} [-Wsign-compare]
  112 |     for (int i = 0; i < arr.size(); i++) {
      |                     ~~^~~~~~~~~~~~
blocks.cpp:116:23: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<long int>::size_type' {aka 'long unsigned int'} [-Wsign-compare]
  116 |     for (int i = 0; i < arr.size(); i++) {
      |                     ~~^~~~~~~~~~~~
blocks.cpp:133:25: warning: unused variable 'myMax' [-Wunused-variable]
  133 |                 int64_t myMax = 0;
      |                         ^~~~~

Subtask #1
14.0 / 14.0

# 결과 실행 시간 메모리 Grader output
1 Correct 0 ms 212 KB Output is correct
2 Correct 0 ms 212 KB Output is correct
3 Correct 1 ms 212 KB Output is correct
4 Correct 0 ms 212 KB Output is correct
5 Correct 0 ms 212 KB Output is correct
6 Correct 0 ms 212 KB Output is correct
7 Correct 0 ms 212 KB Output is correct
8 Correct 0 ms 212 KB Output is correct
9 Correct 0 ms 212 KB Output is correct
10 Correct 1 ms 212 KB Output is correct
11 Correct 1 ms 212 KB Output is correct
12 Correct 0 ms 340 KB Output is correct
13 Correct 1 ms 340 KB Output is correct
14 Correct 1 ms 340 KB Output is correct
15 Correct 0 ms 212 KB Output is correct
16 Correct 1 ms 340 KB Output is correct
17 Correct 1 ms 340 KB Output is correct
18 Correct 1 ms 340 KB Output is correct

Subtask #2
18.0 / 18.0

# 결과 실행 시간 메모리 Grader output
1 Correct 0 ms 212 KB Output is correct
2 Correct 0 ms 212 KB Output is correct
3 Correct 0 ms 212 KB Output is correct
4 Correct 0 ms 212 KB Output is correct
5 Correct 0 ms 212 KB Output is correct
6 Correct 0 ms 212 KB Output is correct
7 Correct 0 ms 280 KB Output is correct
8 Correct 0 ms 212 KB Output is correct
9 Correct 0 ms 212 KB Output is correct
10 Correct 1 ms 212 KB Output is correct
11 Correct 0 ms 212 KB Output is correct
12 Correct 0 ms 212 KB Output is correct
13 Correct 0 ms 212 KB Output is correct
14 Correct 0 ms 212 KB Output is correct
15 Correct 0 ms 212 KB Output is correct
16 Correct 1 ms 212 KB Output is correct
17 Correct 1 ms 212 KB Output is correct
18 Correct 0 ms 212 KB Output is correct
19 Correct 0 ms 212 KB Output is correct
20 Correct 1 ms 212 KB Output is correct

Subtask #3
21.0 / 21.0

# 결과 실행 시간 메모리 Grader output
1 Correct 0 ms 212 KB Output is correct
2 Correct 0 ms 212 KB Output is correct
3 Correct 1 ms 212 KB Output is correct
4 Correct 0 ms 212 KB Output is correct
5 Correct 0 ms 212 KB Output is correct
6 Correct 0 ms 212 KB Output is correct
7 Correct 0 ms 212 KB Output is correct
8 Correct 0 ms 212 KB Output is correct
9 Correct 0 ms 212 KB Output is correct
10 Correct 1 ms 212 KB Output is correct
11 Correct 1 ms 212 KB Output is correct
12 Correct 0 ms 340 KB Output is correct
13 Correct 1 ms 340 KB Output is correct
14 Correct 1 ms 340 KB Output is correct
15 Correct 0 ms 212 KB Output is correct
16 Correct 1 ms 340 KB Output is correct
17 Correct 1 ms 340 KB Output is correct
18 Correct 1 ms 340 KB Output is correct
19 Correct 0 ms 212 KB Output is correct
20 Correct 0 ms 212 KB Output is correct
21 Correct 0 ms 212 KB Output is correct
22 Correct 0 ms 212 KB Output is correct
23 Correct 0 ms 212 KB Output is correct
24 Correct 0 ms 212 KB Output is correct
25 Correct 0 ms 280 KB Output is correct
26 Correct 0 ms 212 KB Output is correct
27 Correct 0 ms 212 KB Output is correct
28 Correct 1 ms 212 KB Output is correct
29 Correct 0 ms 212 KB Output is correct
30 Correct 0 ms 212 KB Output is correct
31 Correct 0 ms 212 KB Output is correct
32 Correct 0 ms 212 KB Output is correct
33 Correct 0 ms 212 KB Output is correct
34 Correct 1 ms 212 KB Output is correct
35 Correct 1 ms 212 KB Output is correct
36 Correct 0 ms 212 KB Output is correct
37 Correct 0 ms 212 KB Output is correct
38 Correct 1 ms 212 KB Output is correct
39 Correct 2 ms 340 KB Output is correct
40 Correct 0 ms 212 KB Output is correct
41 Correct 0 ms 212 KB Output is correct
42 Correct 0 ms 212 KB Output is correct
43 Correct 0 ms 212 KB Output is correct
44 Correct 0 ms 212 KB Output is correct
45 Correct 0 ms 212 KB Output is correct
46 Correct 0 ms 212 KB Output is correct
47 Correct 0 ms 212 KB Output is correct
48 Correct 0 ms 212 KB Output is correct
49 Correct 1 ms 212 KB Output is correct
50 Correct 0 ms 212 KB Output is correct
51 Correct 2 ms 340 KB Output is correct
52 Correct 2 ms 340 KB Output is correct
53 Correct 5 ms 376 KB Output is correct
54 Correct 5 ms 380 KB Output is correct
55 Correct 3 ms 340 KB Output is correct
56 Correct 4 ms 340 KB Output is correct
57 Correct 5 ms 340 KB Output is correct

Subtask #4
0 / 47.0

# 결과 실행 시간 메모리 Grader output
1 Correct 0 ms 212 KB Output is correct
2 Correct 0 ms 212 KB Output is correct
3 Correct 1 ms 212 KB Output is correct
4 Correct 0 ms 212 KB Output is correct
5 Correct 0 ms 212 KB Output is correct
6 Correct 0 ms 212 KB Output is correct
7 Correct 0 ms 212 KB Output is correct
8 Correct 0 ms 212 KB Output is correct
9 Correct 0 ms 212 KB Output is correct
10 Correct 1 ms 212 KB Output is correct
11 Correct 1 ms 212 KB Output is correct
12 Correct 0 ms 340 KB Output is correct
13 Correct 1 ms 340 KB Output is correct
14 Correct 1 ms 340 KB Output is correct
15 Correct 0 ms 212 KB Output is correct
16 Correct 1 ms 340 KB Output is correct
17 Correct 1 ms 340 KB Output is correct
18 Correct 1 ms 340 KB Output is correct
19 Correct 0 ms 212 KB Output is correct
20 Correct 0 ms 212 KB Output is correct
21 Correct 0 ms 212 KB Output is correct
22 Correct 0 ms 212 KB Output is correct
23 Correct 0 ms 212 KB Output is correct
24 Correct 0 ms 212 KB Output is correct
25 Correct 0 ms 280 KB Output is correct
26 Correct 0 ms 212 KB Output is correct
27 Correct 0 ms 212 KB Output is correct
28 Correct 1 ms 212 KB Output is correct
29 Correct 0 ms 212 KB Output is correct
30 Correct 0 ms 212 KB Output is correct
31 Correct 0 ms 212 KB Output is correct
32 Correct 0 ms 212 KB Output is correct
33 Correct 0 ms 212 KB Output is correct
34 Correct 1 ms 212 KB Output is correct
35 Correct 1 ms 212 KB Output is correct
36 Correct 0 ms 212 KB Output is correct
37 Correct 0 ms 212 KB Output is correct
38 Correct 1 ms 212 KB Output is correct
39 Correct 2 ms 340 KB Output is correct
40 Correct 0 ms 212 KB Output is correct
41 Correct 0 ms 212 KB Output is correct
42 Correct 0 ms 212 KB Output is correct
43 Correct 0 ms 212 KB Output is correct
44 Correct 0 ms 212 KB Output is correct
45 Correct 0 ms 212 KB Output is correct
46 Correct 0 ms 212 KB Output is correct
47 Correct 0 ms 212 KB Output is correct
48 Correct 0 ms 212 KB Output is correct
49 Correct 1 ms 212 KB Output is correct
50 Correct 0 ms 212 KB Output is correct
51 Correct 2 ms 340 KB Output is correct
52 Correct 2 ms 340 KB Output is correct
53 Correct 5 ms 376 KB Output is correct
54 Correct 5 ms 380 KB Output is correct
55 Correct 3 ms 340 KB Output is correct
56 Correct 4 ms 340 KB Output is correct
57 Correct 5 ms 340 KB Output is correct
58 Correct 259 ms 7612 KB Output is correct
59 Correct 21 ms 11732 KB Output is correct
60 Correct 381 ms 30288 KB Output is correct
61 Execution timed out 1078 ms 30324 KB Time limit exceeded
62 Halted 0 ms 0 KB -