Submission #764119

#	Time	Username	Problem	Language	Result	Execution time	Memory
764119		t6twotwo	Mechanical Doll (IOI18_doll)	C++17	6 / 100	39 ms	7220 KiB

doll

#include "doll.h"
#include <bits/stdc++.h>
using namespace std;
void create_circuit(int M, vector<int> A) {
    int N = A.size();
    vector<int> f(M + 1);
    for (int i = 0; i < N; i++) {
        f[A[i]]++;
    }
    vector<int> C(M + 1);
    int K = 0;
    for (int i = 1; i <= M; i++) {
        if (f[i] == 2) {
            C[i] = ~K;
            K++;
        }
    }
    vector<int> X(K), Y(K);
    C[0] = A[0];
    for (int i = 0; i < N; i++) {
        if (f[A[i]] == 1) {
            C[A[i]] = i + 1 < N ? A[i + 1] : 0;
        } else if (f[A[i]] == 2) {
            X[~C[A[i]]] = A[i + 1];
            f[A[i]] = -1;
        } else {
            Y[~C[A[i]]] = i + 1 < N ? A[i + 1] : 0;
        }
    }
    answer(C, X, Y);
}

• Subtask 1: 2 / 2
• Subtask 2: 4 / 4
• Subtask 3: 0 / 10
• Subtask 4: 0 / 10
• Subtask 5: 0 / 18
• Subtask 6: 0 / 56