Submission #935604

#	Time	Username	Problem	Language	Result	Execution time	Memory
935604		wii	Ancient Machine (JOI21_ancient_machine)	C++17	99 / 100	47 ms	8308 KiB

Anna

#include <vector>
#include <iostream>
using namespace std;
 
typedef long long ll;
 
void Anna(int N, std::vector<char> S);
void Send(int a);
 
void Anna(int N, std::vector<char> S) {
    const int Lim = 87;
    const int LOG = 61;
 
    int cnt[3] = {0};
    for (char x: S) {
        if (x == 'X') ++cnt[0];
        if (x == 'Y') ++cnt[1];
        if (x == 'Z') ++cnt[2];
    }
 
    vector<int> a;
    a.assign(N, 0);
 
    int res = 0;
    for (int i = 0; i < N; ++i)
    if (S[i] == 'X') {
        res = i; break;
    }
 
    for (int i = 1; i <= 17; ++i)
        Send(res >> i - 1 & 1);
 
    for (int i = 0; i < N; ++i) if (i > res)
        a[i] = (S[i] == 'Z');
 
    for (int i = 1; i < N; ++i)
        if (a[i - 1] == 1 && a[i] == 1)
            a[i - 1] = 0;
 
    vector<ll> fibo(95);
    fibo[0] = 1; fibo[1] = 1;
    for (int i = 2; i <= Lim; ++i)
        fibo[i] = fibo[i - 1] + fibo[i - 2];
 
    for (int i = 0; i < N; i += Lim) {
        ll hash_num = 0;
        for (int j = i; j < N && j < i + Lim; ++j)
            if (a[j] == 1)
                hash_num += fibo[j - i + 1];
 
        for (int u = 1; u <= LOG; ++u)
            Send(hash_num >> u - 1 & 1);
    }
}

Bruno

#include <deque>
#include <vector>
#include <iostream>
#include <algorithm>
using namespace std;
 
typedef long long ll;
 
void Bruno(int N, int L, std::vector<int> A);
void Remove(int d);
 
// 11 XYZXZYXYXYZ
 
void Bruno(int N, int L, std::vector<int> A) {
    const int Lim = 87;
    const int LOG = 61;
 
    int ptr = 0;
 
    int first_x = 0;
    for (int i = 1; i <= 17; ++i) {
        if (A[ptr] == 1)
            first_x += 1LL << i - 1;
        ++ptr;
    }
 
    vector<int> pos_z;
    pos_z.push_back(first_x);
 
    vector<ll> fibo(95);
    fibo[0] = 1; fibo[1] = 1;
    for (int i = 2; i <= Lim; ++i)
        fibo[i] = fibo[i - 1] + fibo[i - 2];
 
    int cur = 0;
    for (int i = ptr; i < A.size(); i += LOG) {
        ll hash_num = 0;
        for (int j = 1; j <= LOG && i + j - 1 < A.size(); ++j)
            if (A[i + j - 1] == 1)
                hash_num += 1LL << j - 1;
 
        for (int u = Lim ; u >= 1; --u) if (hash_num >= fibo[u]) {
            pos_z.push_back(cur + u - 1);
            hash_num -= fibo[u];
        } cur += Lim;
    } sort(pos_z.begin(), pos_z.end());
 
    for (int i = 1; i < pos_z.size(); ++i) {
        int l = pos_z[i - 1];
        int r = pos_z[i];
 
        // cout << l << " " << r << "\n";
 
        for (int u = r - 1; u > l; --u)
            Remove(u);
        Remove(r);
    }
 
    for (int i = pos_z.back() + 1; i < N; ++i)
        Remove(i);
 
    for (int i = 0; i <= pos_z[0]; ++i)
        Remove(i);
}

Compilation message (stderr)

Anna.cpp: In function 'void Anna(int, std::vector<char>)':
Anna.cpp:31:23: warning: suggest parentheses around '-' inside '>>' [-Wparentheses]
   31 |         Send(res >> i - 1 & 1);
      |                     ~~^~~
Anna.cpp:52:32: warning: suggest parentheses around '-' inside '>>' [-Wparentheses]
   52 |             Send(hash_num >> u - 1 & 1);
      |                              ~~^~~

Bruno.cpp: In function 'void Bruno(int, int, std::vector<int>)':
Bruno.cpp:23:33: warning: suggest parentheses around '-' inside '<<' [-Wparentheses]
   23 |             first_x += 1LL << i - 1;
      |                               ~~^~~
Bruno.cpp:36:25: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<int>::size_type' {aka 'long unsigned int'} [-Wsign-compare]
   36 |     for (int i = ptr; i < A.size(); i += LOG) {
      |                       ~~^~~~~~~~~~
Bruno.cpp:38:47: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<int>::size_type' {aka 'long unsigned int'} [-Wsign-compare]
   38 |         for (int j = 1; j <= LOG && i + j - 1 < A.size(); ++j)
      |                                     ~~~~~~~~~~^~~~~~~~~~
Bruno.cpp:40:38: warning: suggest parentheses around '-' inside '<<' [-Wparentheses]
   40 |                 hash_num += 1LL << j - 1;
      |                                    ~~^~~
Bruno.cpp:48:23: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<int>::size_type' {aka 'long unsigned int'} [-Wsign-compare]
   48 |     for (int i = 1; i < pos_z.size(); ++i) {
      |                     ~~^~~~~~~~~~~~~~

• Subtask 1: 5 / 5
• Subtask 2: 94 / 95