Submission #831871

#	Time	Username	Problem	Language	Result	Execution time	Memory
831871		ttamx	Sorting (IOI15_sorting)	C++14	20 / 100	1 ms	340 KiB

sorting

#include "sorting.h"
#include<bits/stdc++.h>

using namespace std;

int n,m;
vector<int> s;

int findSwapPairs(int N, int S[], int M, int X[], int Y[], int P[], int Q[]) {
	n=N,m=M;
	for(int i=0;i<n;i++)s.emplace_back(S[i]);
	vector<pair<int,int>> ans;
	for(int i=0;i<n;i++){
		while(s[i]!=i){
			ans.emplace_back(i,s[i]);
			swap(s[i],s[s[i]]);
		}
	}
	for(int i=0;i<ans.size();i++)tie(P[i],Q[i])=ans[i];
	return ans.size();
}

Compilation message (stderr)

sorting.cpp: In function 'int findSwapPairs(int, int*, int, int*, int*, int*, int*)':
sorting.cpp:19:15: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<std::pair<int, int> >::size_type' {aka 'long unsigned int'} [-Wsign-compare]
   19 |  for(int i=0;i<ans.size();i++)tie(P[i],Q[i])=ans[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:9:46: warning: unused parameter 'X' [-Wunused-parameter]
    9 | int findSwapPairs(int N, int S[], int M, int X[], int Y[], int P[], int Q[]) {
      |                                          ~~~~^~~
sorting.cpp:9:55: warning: unused parameter 'Y' [-Wunused-parameter]
    9 | int findSwapPairs(int N, int S[], 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