Submission #384915

#	Time	Username	Problem	Language	Result	Execution time	Memory
384915		arman_ferdous	Mechanical Doll (IOI18_doll)	C++17	16 / 100	168 ms	12828 KiB

doll

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

#define sz(v) (int)v.size()

const int M = 1e5+10; // triggers

vector<int> g[M];

void create_circuit(int m, vector<int> a) {
  a.push_back(0); // to loop back
  int n = a.size(); 
  for(int i = 0; i < n - 1; i++) {
    g[a[i]].push_back(a[i + 1]);
  }
  vector<int> C, X, Y; C.push_back(a[0]); // starting connection
  for(int i = 1; i <= m; i++) {
    assert(sz(g[i]) <= 4);
    if(g[i].empty()) {
      C.push_back(0);
      continue;
    }
    int newswitch = - sz(X) - 1;
    // C.push_back(newswitch);
    if(sz(g[i]) == 1) {
      C.push_back(g[i][0]);
    }
    else if(sz(g[i]) == 2) {
      C.push_back(newswitch);
      X.push_back(g[i][0]);
      Y.push_back(g[i][1]);
    }
    else if(sz(g[i]) == 3) {
      C.push_back(newswitch);
      int le = newswitch - 1, ri = newswitch - 2;

      X.push_back(le); Y.push_back(ri);
      X.push_back(g[i][0]); Y.push_back(newswitch);
      X.push_back(g[i][1]); Y.push_back(g[i][2]);
    }
    else {
      C.push_back(newswitch);
      int le = newswitch - 1, ri = newswitch - 2;

      X.push_back(le); Y.push_back(ri);
      X.push_back(g[i][0]); Y.push_back(g[i][2]);
      X.push_back(g[i][1]); Y.push_back(g[i][3]);
    }
  }
  answer(C, X, Y);
}

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