Submission #791895

#	Time	Username	Problem	Language	Result	Execution time	Memory
791895		t6twotwo	Unscrambling a Messy Bug (IOI16_messy)	C++17	100 / 100	2 ms	468 KiB

messy

#include "messy.h"
#include <bits/stdc++.h>
using namespace std;
string S;
void f(int l, int r) {
    if (l + 1 == r) {
        return;
    }
    int m = (l + r) / 2;
    for (int i = l; i < m; i++) {
        S[i] = '1';
        add_element(S);
        S[i] = '0';
    }
    fill(S.begin() + m, S.begin() + r, '1');
    f(l, m);
    fill(S.begin() + m, S.begin() + r, '0');
    fill(S.begin() + l, S.begin() + m, '1');
    f(m, r);
    fill(S.begin() + l, S.begin() + m, '0');
}
vector<int> restore_permutation(int N, int W, int R) {
    S = string(N, '0');
    f(0, N);
    compile_set();
    vector<int> P(N);
    for (int i = __lg(N) - 1; i >= 0; i--) {
        auto a = P;
        for (int j = 0; j < N; j++) {
            string S(N, '0');
            for (int k = 0; k < N; k++) {
                if (a[j] != a[k] || j == k) {
                    S[k] = '1';
                }
            }
            if (!check_element(S)) {
                P[j] += 1 << i;
            }
        }
    }
    return P;
}

• Subtask 1: 20 / 20
• Subtask 2: 18 / 18
• Subtask 3: 11 / 11
• Subtask 4: 21 / 21
• Subtask 5: 30 / 30