Submission #1355464

#	Time	Username	Problem	Language	Result	Execution time	Memory
1355464		toast12	Machine (IOI24_machine)	C++20	10 / 100	4 ms	452 KiB

machine

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

vector<int> find_permutation(int N) {
    vector<int> A(N);
    for (int i = 0; i < N; i++)
        A[i] = i;
    vector<int> B = use_machine(A);
    vector<int> ans(N);
    int x = 0;
    for (; x <= 255; x++) {
        vector<int> cnt(N);
        for (int i = 0; i < N; i++) {
            int temp = x^B[i];
            if (temp < N) cnt[temp]++;
        }
        if (*min_element(cnt.begin(), cnt.end()) == 1 && *max_element(cnt.begin(), cnt.end()) == 1) {
            x = x;
            break;
        }
    }
    for (int i = 0; i < N; i++) ans[i] = x^B[i];
    return ans;
}

• Subtask 0: 0 / 0
• Subtask 1: 0 / 7
• Subtask 2: 0 / 12
• Subtask 3: 0 / 19
• Subtask 4: 0 / 21
• Subtask 5: 10 / 10
• Subtask 6: 0 / 31