Submission #1071150

#	Time	Username	Problem	Language	Result	Execution time	Memory
1071150		Plurm	Ancient Machine (JOI21_ancient_machine)	C++17	0 / 100	124 ms	262144 KiB

Anna

#include "Anna.h"
#include <vector>

namespace {

int variable_example = 0;

}

void Anna(int N, std::vector<char> S) {
    for (int i = 0; i < N; i++) {
        if (S[i] == 'X') {
            Send(0);
        } else if (S[i] == 'Y') {
            Send(1);
            Send(0);
        } else {
            Send(1);
            Send(1);
        }
    }
}

Bruno

#include "Bruno.h"
#include <bits/stdc++.h>
using namespace std;
namespace {
void resolve(vector<int> &ord, vector<vector<int>> &dp,
             vector<vector<int>> &par, int l, int r) {
    if (l > r)
        return;
    if (l == r) {
        ord.push_back(l);
        return;
    }
    if (par[l][r] >= 0) {
        resolve(ord, dp, par, l, par[l][r]);
        resolve(ord, dp, par, par[l][r] + 1, r);
    } else {
        resolve(ord, dp, par, l + 1, ~par[l][r] - 1);
        resolve(ord, dp, par, ~par[l][r] + 1, r - 1);
        ord.push_back(~par[l][r]);
        ord.push_back(l);
        ord.push_back(r);
    }
}
} // namespace

void Bruno(int N, int L, std::vector<int> A) {
    string target;
    int ptr = 0;
    while (ptr < L) {
        if (A[ptr++] == 0)
            target.push_back('X');
        else if (A[ptr++] == 0)
            target.push_back('Y');
        else
            target.push_back('Z');
    }
    vector<vector<int>> g(N);
    for (int i = 0; i < N; i++) {
        if (target[i] != 'Y')
            continue;
        int x = -1;
        for (int j = i - 1; j >= 0; j--) {
            if (target[j] == 'X') {
                x = j;
                break;
            }
        }
        int z = N;
        for (int j = i + 1; j < N; j++) {
            if (target[j] == 'Z') {
                z = j;
                break;
            }
        }
        if (x == -1 || z == N)
            continue;
        for (int j = x + 1; j < z; j++) {
            if (j == i)
                continue;
            g[j].push_back(i);
        }
    }
    vector<vector<int>> dp(N);
    vector<vector<int>> par(N);
    for (int i = 0; i < N; i++) {
        dp[i].resize(N, 0);
        par[i].resize(N, 0);
        dp[i][i] = 0;
        par[i][i] = i;
    }
    for (int itv = 1; itv < N; itv++) {
        for (int i = 0; i + itv < N; i++) {
            int j = i + itv;
            dp[i][j] = -1;
            if (target[i] == 'X' && target[j] == 'Z') {
                for (int k = i + 1; k < j; k++) {
                    if (target[k] == 'Y') {
                        if (dp[i + 1][k - 1] + dp[k + 1][j - 1] + 1 >
                            dp[i][j]) {
                            dp[i][j] = dp[i + 1][k - 1] + dp[k + 1][j - 1] + 1;
                            par[i][j] = ~k;
                        }
                    }
                }
            }
            for (int k = i; k < j; k++) {
                if (dp[i][k] + dp[k + 1][j] > dp[i][j]) {
                    dp[i][j] = dp[i][k] + dp[k + 1][j];
                    par[i][j] = k;
                }
            }
        }
    }
    vector<int> ord;
    resolve(ord, dp, par, 0, N - 1);
    for (int x : ord)
        Remove(x);
}

Compilation message (stderr)

Anna.cpp:6:5: warning: '{anonymous}::variable_example' defined but not used [-Wunused-variable]
    6 | int variable_example = 0;
      |     ^~~~~~~~~~~~~~~~

• Subtask 1: 0 / 5
• Subtask 2: 0 / 95