Submission #544034

# Submission time Handle Problem Language Result Execution time Memory
544034 2022-03-31T20:24:59 Z Olympia Bali Sculptures (APIO15_sculpture) C++17
0 / 100
1 ms 212 KB
#include <vector>
#include <algorithm>
#include <iostream>
#include <set>
#include <cmath>
#include <map>
#include <random>
#include <cassert>
#include <ctime>
#include <bitset>
#include <stack>
#include <cstdlib>
#include <queue>
#include <cstdio>
#include <limits.h>
#pragma GCC target ("avx2")
#pragma GCC optimization ("O1")
#pragma GCC optimization ("unroll-loops")

using namespace std;

class SparseTable {
    vector<vector<int64_t>> dp;
    vector<int64_t> arr;
public:
    int64_t query (int l, int r) {
        if (l == r) {
            return arr[l];
        }
        int sz = log2(r - l);
        return dp[l][sz] + query(l + (1 << sz), r);
    }
    SparseTable (vector<int64_t> arr) {
        this->arr = arr;
        dp.resize(arr.size());
        for (int i = 0; i < arr.size(); i++) {
            dp[i].resize(32);
            dp[i][0] = arr[i];
        }
        for (int j = 1; j < 32; j++) {
            for (int i = 0; i < arr.size(); i++) {
                dp[i][j] = dp[i][j - 1] + dp[min(i + (1 << (j - 1)), (int)arr.size() - 1)][j - 1];
            }
        }
    }
};

vector<int64_t> powr = {1};

bool submask (int64_t mask, int64_t cur) {
    return ((cur | mask) == mask);
}

bool process (SparseTable& st, int A, int B, int N, int64_t mask) {
    bitset<2000> dp[N + 1];
    bitset<2000> segments[N];
    for (int i = 0; i < N; i++) {
        for (int j = 1; j <= i; j++) {
            if (submask(mask, st.query(j, i))) {
                segments[i].set(j - 1);
            }
        }
    }
    for (int i = 0; i < N; i++) {
        if (submask(mask, st.query(0, i))) {
            dp[1].set(i);
        }
    }
    for (int j = 2; j <= N; j++) {
        for (int i = 0; i < N; i++) {
            if ((dp[j - 1] & segments[i]).count()) {
                dp[j].set(i);
            }
        }
    }
    for (int j = A; j <= B; j++) {
        if (dp[j][N - 1]) {
            return true;
        }
    }
    return false;
}

int main() {
    ios_base::sync_with_stdio(false);
    cin.tie(NULL);
    int N, A, B;
    cin >> N >> A >> B;
    vector<int64_t> arr(N);
    for (int i = 0; i < N; i++) {
        cin >> arr[i];
    }
    SparseTable st(arr);
    while (powr.size() != 60) {
        powr.push_back(powr.back() * 2);
    }
    const int MX = 29;
    int64_t cur = powr[MX] - 1;
    for (int j = MX; j >= 0; j--) {
        if (process(st, A, B, N, cur - powr[j])) {
            cur -= powr[j];
        }
    }
    cout << cur;
}

Compilation message

sculpture.cpp:17: warning: ignoring '#pragma GCC optimization' [-Wunknown-pragmas]
   17 | #pragma GCC optimization ("O1")
      | 
sculpture.cpp:18: warning: ignoring '#pragma GCC optimization' [-Wunknown-pragmas]
   18 | #pragma GCC optimization ("unroll-loops")
      | 
sculpture.cpp: In constructor 'SparseTable::SparseTable(std::vector<long int>)':
sculpture.cpp:36:27: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<long int>::size_type' {aka 'long unsigned int'} [-Wsign-compare]
   36 |         for (int i = 0; i < arr.size(); i++) {
      |                         ~~^~~~~~~~~~~~
sculpture.cpp:41:31: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<long int>::size_type' {aka 'long unsigned int'} [-Wsign-compare]
   41 |             for (int i = 0; i < arr.size(); i++) {
      |                             ~~^~~~~~~~~~~~
# Verdict Execution time Memory Grader output
1 Incorrect 0 ms 212 KB Output isn't correct
2 Halted 0 ms 0 KB -
# Verdict Execution time Memory Grader output
1 Incorrect 0 ms 212 KB Output isn't correct
2 Halted 0 ms 0 KB -
# Verdict Execution time Memory Grader output
1 Incorrect 0 ms 212 KB Output isn't correct
2 Halted 0 ms 0 KB -
# Verdict Execution time Memory Grader output
1 Incorrect 1 ms 212 KB Output isn't correct
2 Halted 0 ms 0 KB -
# Verdict Execution time Memory Grader output
1 Incorrect 0 ms 212 KB Output isn't correct
2 Halted 0 ms 0 KB -