Submission #387262

#	TimeUTC-0	Username	Problem	Language	Result	Execution time	Memory
387262	2021-04-08 07:47:08	ParsaAlizadeh	Sorting (IOI15_sorting)	C++17	100 / 100	204 ms	22600 KiB

sorting

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#include <bits/stdc++.h>
#include "sorting.h"
using namespace std;
typedef pair<int, int> pii;
vector<int> perm;
vector<pii> alice, bob;
bool check(int t) {
  vector<int> tmp(perm);
  for (int i = 0; i < t; i++) {
    swap(tmp[alice[i].first], tmp[alice[i].second]);
  }
  bob.clear();
  for (int i = 0; i < tmp.size(); i++) {
    while (tmp[i] != i) {
      bob.emplace_back(tmp[i], tmp[tmp[i]]);
      swap(tmp[i], tmp[tmp[i]]);
    }
  }
  while (bob.size() < t)
    bob.emplace_back(0, 0);
  return bob.size() == t;
}
int findSwapPairs(int N, int S[], int M, int X[], int Y[], int P[], int Q[]) {
  perm.assign(S, S + N);
  for (int i = 0; i < M; i++) {
    alice.emplace_back(X[i], Y[i]);
 
 
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Compilation message (stderr)

sorting.cpp: In function 'bool check(int)':
sorting.cpp:16:20: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<int>::size_type' {aka 'long unsigned int'} [-Wsign-compare]
   16 |  for (int i = 0; i < tmp.size(); i++) {
      |                  ~~^~~~~~~~~~~~
sorting.cpp:22:20: warning: comparison of integer expressions of different signedness: 'std::vector<std::pair<int, int> >::size_type' {aka 'long unsigned int'} and 'int' [-Wsign-compare]
   22 |  while (bob.size() < t)
      |         ~~~~~~~~~~~^~~
sorting.cpp:24:20: warning: comparison of integer expressions of different signedness: 'std::vector<std::pair<int, int> >::size_type' {aka 'long unsigned int'} and 'int' [-Wsign-compare]
   24 |  return bob.size() == t;
      |         ~~~~~~~~~~~^~~~

• Subtask 1: 8 / 8
• Subtask 2: 12 / 12
• Subtask 3: 16 / 16
• Subtask 4: 18 / 18
• Subtask 5: 20 / 20
• Subtask 6: 26 / 26