제출 #316679

#	제출 시각	아이디	문제	언어	결과	실행 시간	메모리
316679		keta_tsimakuridze	정렬하기 (IOI15_sorting)	C++14	20 / 100	2 ms	384 KiB

sorting

#include<bits/stdc++.h>
#include "sorting.h"
int findSwapPairs(int N, int A[], int M, int x[], int y[], int P[], int Q[]) {
    int l=0; int r=N-1;
    std::vector<std::pair<int,int> > V,ans;
    int a[N],ind[N];
    while(l<=r){
    	V.clear();
    	int mid=(l+r)/2;
    	for(int i=0;i<N;i++){
    		a[i]=A[i];
    		ind[a[i]]=i;
		}
		for(int i=0;i<mid;i++){
			std::swap(ind[a[x[i]]],ind[a[y[i]]]);
			std::swap(a[x[i]],a[y[i]]);
		}
		for(int i=0;i<N;i++){
			if(a[i]!=i){
				std::swap(a[i],a[ind[i]]);
				V.push_back(std::make_pair(i,ind[i]));
				std::swap(ind[a[ind[i]]],ind[i]);
			
				
			}
		}
		//std::cout<<mid<<" "<<V.size()<<" \n";
		if(V.size()<=mid) {
			ans.resize(mid);
			for(int i=V.size();i<mid;i++)
			V.push_back(std::make_pair(0,0));
			ans=V; 
			r=mid-1;
		}
		else l=mid+1;
	} 
	for(int i=0;i<ans.size();i++){
	P[i]=ans[i].first;
	Q[i]=ans[i].second;
	}
	return ans.size();
}

컴파일 시 표준 에러 (stderr) 메시지

sorting.cpp: In function 'int findSwapPairs(int, int*, int, int*, int*, int*, int*)':
sorting.cpp:28:14: warning: comparison of integer expressions of different signedness: 'std::vector<std::pair<int, int> >::size_type' {aka 'long unsigned int'} and 'int' [-Wsign-compare]
   28 |   if(V.size()<=mid) {
      |      ~~~~~~~~^~~~~
sorting.cpp:30:20: warning: conversion from 'std::vector<std::pair<int, int> >::size_type' {aka 'long unsigned int'} to 'int' may change value [-Wconversion]
   30 |    for(int i=V.size();i<mid;i++)
      |              ~~~~~~^~
sorting.cpp:37:15: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<std::pair<int, int> >::size_type' {aka 'long unsigned int'} [-Wsign-compare]
   37 |  for(int i=0;i<ans.size();i++){
      |              ~^~~~~~~~~~~
sorting.cpp:41:17: warning: conversion from 'std::vector<std::pair<int, int> >::size_type' {aka 'long unsigned int'} to 'int' may change value [-Wconversion]
   41 |  return ans.size();
      |         ~~~~~~~~^~
sorting.cpp:3:39: warning: unused parameter 'M' [-Wunused-parameter]
    3 | int findSwapPairs(int N, int A[], 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