oj.uz

Submission #430083

# Submission time Handle Problem Language Result Execution time Memory
430083 2021-06-16T11:21:11 Z KoD Ancient Machine (JOI21_ancient_machine) C++17
100 / 100
 81 ms 8652 KB 
#include <bits/stdc++.h>
#include "Anna.h"

namespace {

using ll = long long;
template <class T> using Vec = std::vector<T>;

ll encode(const std::array<int, 63>& arr) {
    std::array<std::array<ll, 2>, 2> dp{};
    dp[0][0] = 1;
    for (const auto x : arr) {
        std::array<std::array<ll, 2>, 2> next{};
        for (const int i : {0, 1}) {
            for (const int j : {0, 1}) {
                for (const int k : {0, 1}) {
                    if ((!i and x < k) or j + k == 2) {
                        continue;
                    }
                    next[i || (k < x)][k] += dp[i][j];
                }
            }
        }
        dp = std::move(next);
    }
    return dp[1][0] + dp[1][1];
}

}

void Anna(int N, Vec<char> S) {
    int idx = 0;
    while (idx < N and S[idx] != 'X') {
        idx += 1;
    }
    for (int i = 0; i < 17; ++i) {
        Send(idx >> i & 1);
    }
    Vec<int> seq(N);
    for (int i = idx + 1; i < N; ++i) {
        if (S[i] == 'Z' and (i + 1 == N or S[i + 1] != 'Z')) {
            seq[i] = 1;
        }
    }
    for (int l = 0; l < N; l += 63) {
        std::array<int, 63> arr;
        for (int i = 0; i < 63; ++i) {
            arr[i] = (l + i >= N ? 0 : seq[l + i]);
        }
        const ll x = encode(arr);
        for (int i = 0; i < 44; ++i) {
            Send(x >> i & 1);
        }
    }
}

#include <bits/stdc++.h>
#include "Bruno.h"

namespace {

using ll = long long;
template <class T> using Vec = std::vector<T>;

constexpr std::array<ll, 63> FIB = [] {
    std::array<ll, 63> ret{};
    ret[0] = 1;
    ret[1] = 2;
    for (int i = 2; i < 63; ++i) {
        ret[i] = ret[i - 1] + ret[i - 2];
    }
    return ret;
}();

std::array<int, 63> decode(ll x) {
    std::array<int, 63> ret{};
    int idx = 0;
    while (idx < 63) {
        if (x >= FIB[62 - idx]) {
            x -= FIB[62 - idx];
            ret[idx] = 1;
            idx += 2;
        } else {
            idx += 1;
        }
    }
    return ret;
}

}  // namespace

void Bruno(int N, int L, Vec<int> A) {
    int Xpos = 0;
    for (int i = 0; i < 17; ++i) {
        Xpos |= A[i] << i;
    }
    int idx = 0;
    Vec<int> vec;
    for (int i = 17; i < L; i += 44) {
        ll x = 0;
        for (int k = 0; k < 44; ++k) {
            x |= (ll) A[i + k] << k;
        }
        for (const auto y : decode(x)) {
            if (y) {
                vec.push_back(idx);
            }
            idx += 1;
        }
    }
    Vec<int> removed(N);
    for (const auto i : vec) {
        for (int j = i - 1; j > Xpos; --j) {
            Remove(j);
            removed[j] = true;
        }
        Remove(i);
        removed[i] = true;
        Xpos = i;
    }
    for (int i = 0; i < N; ++i) {
        if (!removed[i]) {
            Remove(i);
        }
    }
}

Subtask #1
5.0 / 5.0

# Verdict Execution time Memory Grader output
1 Correct 2 ms 484 KB Output is correct
2 Correct 1 ms 484 KB Output is correct
3 Correct 2 ms 476 KB Output is correct
4 Correct 1 ms 488 KB Output is correct
5 Correct 2 ms 480 KB Output is correct
6 Correct 2 ms 484 KB Output is correct
7 Correct 2 ms 484 KB Output is correct
8 Correct 2 ms 484 KB Output is correct
9 Correct 2 ms 484 KB Output is correct
10 Correct 2 ms 492 KB Output is correct
11 Correct 2 ms 484 KB Output is correct

Subtask #2
95.0 / 95.0

# Verdict Execution time Memory Grader output
1 Correct 64 ms 7988 KB Output is correct
2 Correct 74 ms 8264 KB Output is correct
3 Correct 65 ms 8432 KB Output is correct
4 Correct 79 ms 8400 KB Output is correct
5 Correct 65 ms 8324 KB Output is correct
6 Correct 62 ms 8420 KB Output is correct
7 Correct 69 ms 8332 KB Output is correct
8 Correct 68 ms 8468 KB Output is correct
9 Correct 68 ms 8320 KB Output is correct
10 Correct 73 ms 8420 KB Output is correct
11 Correct 75 ms 8652 KB Output is correct
12 Correct 72 ms 8472 KB Output is correct
13 Correct 73 ms 8380 KB Output is correct
14 Correct 75 ms 8560 KB Output is correct
15 Correct 67 ms 8368 KB Output is correct
16 Correct 71 ms 8324 KB Output is correct
17 Correct 77 ms 8304 KB Output is correct
18 Correct 69 ms 8172 KB Output is correct
19 Correct 80 ms 8288 KB Output is correct
20 Correct 68 ms 8416 KB Output is correct
21 Correct 62 ms 8424 KB Output is correct
22 Correct 74 ms 8296 KB Output is correct
23 Correct 66 ms 8288 KB Output is correct
24 Correct 71 ms 8416 KB Output is correct
25 Correct 73 ms 8220 KB Output is correct
26 Correct 80 ms 8320 KB Output is correct
27 Correct 75 ms 8152 KB Output is correct
28 Correct 79 ms 8360 KB Output is correct
29 Correct 81 ms 8264 KB Output is correct
30 Correct 68 ms 8384 KB Output is correct
31 Correct 81 ms 8308 KB Output is correct
32 Correct 63 ms 8380 KB Output is correct
33 Correct 68 ms 8416 KB Output is correct