Submission #711059

#	Time	Username	Problem	Language	Result	Execution time	Memory
711059		Pring	Data Transfer (IOI19_transfer)	C++14	0 / 100	10 ms	5628 KiB

transfer

#include "transfer.h"
#include <bits/stdc++.h>
using namespace std;

vector<int> get_attachment(vector<int> source) {
    int n = source.size();
    vector<int> modify(n + 9);
    int x = 0, y = 0;
    for (int i = 0; i < n; i++) {
        modify[i] = source[i];
        if (modify[i]) x |= (i + 1);
    }
    for (int i = 0; i < 8; i++) {
        modify[n + i] = (bool) (x | (1 << i));
        if (modify[n + i]) y ^= 1;
    }
    modify.back() = y;
    return modify;
}

vector<int> retrieve(vector<int> data) {
    int n = data.size() - 9;
    vector<int> ans(n);
    for (int i = 0; i < n; i++) ans[i] = data[i];
    int x = 0, y = 0;
    for (int i = 0; i < 8; i++) {
        if (data[n + i]) {
            x += (1 << i);
            y ^= 1;
        }
    }
    if (y != data.back()) return ans;
    for (int i = 0; i < n; i++) {
        if (ans[i]) x |= i + 1;
    }
    if (x == 0) return ans;
    ans[x - 1] ^= 1;
    return ans;
}

• Subtask 1: 0 / 60
• Subtask 2: 0 / 40