Submission #419807

#	Time	Username	Problem	Language	Result	Execution time	Memory
419807		SuhaibSawalha1	Mechanical Doll (IOI18_doll)	C++17	0 / 100	1 ms	332 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> C(M + 1), X(1), Y(1), cnt(M + 1);
  vector<vector<int>> a(3);
  for (int i : A) {
    ++cnt[i];
  }
  for (int i = 1; i <= M; ++i) {
    a[cnt[i]].push_back(i);
  }
  if (a[2].empty()) {
    C[0] = -1;
    X[0] = -1;
  }
  else {
    C[0] = X[0] = a[2][0];
    for (int i = 0; i < a[2].size() - 1; ++i) {
      C[a[2][i]] = a[2][i + 1];
    }
    C[a[2].back()] = -1;
  }
  if (a[1].empty()) {
  }
  else {
    Y[0] = a[1][0];
    for (int i = 0; i < a[1].size() - 1; ++i) {
      C[a[1][i]] = a[1][i + 1];
    }
    C[a[1].back()] = 0;
  }
  answer(C, X, Y);
}

Compilation message (stderr)

doll.cpp: In function 'void create_circuit(int, std::vector<int>)':
doll.cpp:21:23: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<int>::size_type' {aka 'long unsigned int'} [-Wsign-compare]
   21 |     for (int i = 0; i < a[2].size() - 1; ++i) {
      |                     ~~^~~~~~~~~~~~~~~~~
doll.cpp:30:23: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<int>::size_type' {aka 'long unsigned int'} [-Wsign-compare]
   30 |     for (int i = 0; i < a[1].size() - 1; ++i) {
      |                     ~~^~~~~~~~~~~~~~~~~
doll.cpp:6:7: warning: unused variable 'N' [-Wunused-variable]
    6 |   int N = A.size();
      |       ^

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