Submission #1322172

#	Time	Username	Problem	Language	Result	Execution time	Memory
1322172		kasamchi	Mechanical Doll (IOI18_doll)	C++20	2 / 100	19 ms	5000 KiB

doll

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

#define INF 1000000000

void create_circuit(int M, vector<int> A) {
    int N = A.size();
    A.push_back(0);

    vector<int> cnt(100001);
    for (int k = 0; k < N; k++) {
        cnt[A[k]]++;
    }

    vector<int> C(M + 1), swt(M + 1, -1);
    vector<int> X, Y;
    C[0] = A[0];
    for (int i = 1; i < N; i++) {
        int src = A[i - 1], des = A[i];
        if (cnt[src] == 1) {
            C[src] = des;
        } else if (swt[src] == -1) {
            swt[src] = X.size();
            X.push_back(INF), Y.push_back(INF);
            C[src] = -swt[src] - 1;
            X[swt[src]] = des;
        } else {
            Y[swt[src]] = des;
        }
    }
    answer(C, X, Y);
}

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