Submission #1075116

#	Time	Username	Problem	Language	Result	Execution time	Memory
1075116		ArthuroWich	Sorting (IOI15_sorting)	C++17	20 / 100	1 ms	448 KiB

sorting

#include "sorting.h"
#include<bits/stdc++.h>
using namespace std;
int findSwapPairs(int n, int p[], int M, int X[], int Y[], int P[], int Q[]) {
	vector<pair<int, int>> ans;
	for (int i = 0; i < n; i++) {
		if (p[i] == i) {
			continue;
		}
		while(p[i] != i) {
			int j = p[i];
			ans.push_back({i, j});
			swap(p[i], p[j]);
		}
	}
	for (int i = 0; i < ans.size(); i++) {
		P[i] = ans[i].first;
		Q[i] = ans[i].second;
	}
	return ans.size();
}

Compilation message (stderr)

sorting.cpp: In function 'int findSwapPairs(int, int*, int, int*, int*, int*, int*)':
sorting.cpp:16:20: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<std::pair<int, int> >::size_type' {aka 'long unsigned int'} [-Wsign-compare]
   16 |  for (int i = 0; i < ans.size(); i++) {
      |                  ~~^~~~~~~~~~~~
sorting.cpp:20:17: warning: conversion from 'std::vector<std::pair<int, int> >::size_type' {aka 'long unsigned int'} to 'int' may change value [-Wconversion]
   20 |  return ans.size();
      |         ~~~~~~~~^~
sorting.cpp:4:39: warning: unused parameter 'M' [-Wunused-parameter]
    4 | int findSwapPairs(int n, int p[], int M, int X[], int Y[], int P[], int Q[]) {
      |                                   ~~~~^
sorting.cpp:4:46: warning: unused parameter 'X' [-Wunused-parameter]
    4 | int findSwapPairs(int n, int p[], int M, int X[], int Y[], int P[], int Q[]) {
      |                                          ~~~~^~~
sorting.cpp:4:55: warning: unused parameter 'Y' [-Wunused-parameter]
    4 | int findSwapPairs(int n, int p[], int M, int X[], int Y[], int P[], int Q[]) {
      |                                                   ~~~~^~~

• Subtask 1: 8 / 8
• Subtask 2: 12 / 12
• Subtask 3: 0 / 16
• Subtask 4: 0 / 18
• Subtask 5: 0 / 20
• Subtask 6: 0 / 26