Submission #428118

#	Time	Username	Problem	Language	Result	Execution time	Memory
428118		Hazem	Arranging Shoes (IOI19_shoes)	C++14	10 / 100	1080 ms	1980 KiB

shoes

#include "shoes.h"
#include <bits/stdc++.h>
#define LL long long

using namespace std;

long long count_swaps(std::vector<int> s) {
	
	LL n = s.size()/2,ans = 0;
	int cnt = 0;

	for(int i=0;i<n*2;i++){
		if(s[i]<0){
			for(int j=i;j>cnt*2;j--)
				swap(s[j],s[j-1]),ans++;
			
			int idx = find(s.begin()+cnt*2,s.end(),-s[cnt*2])-s.begin();
			assert(idx!=s.size());
			for(int j = idx;j>cnt*2+1;j--)
				swap(s[j],s[j-1]),ans++;
			
			cnt++;
		}
	}
	return ans;
}

Compilation message (stderr)

In file included from /usr/include/c++/10/cassert:44,
                 from /usr/include/x86_64-linux-gnu/c++/10/bits/stdc++.h:33,
                 from shoes.cpp:2:
shoes.cpp: In function 'long long int count_swaps(std::vector<int>)':
shoes.cpp:18:14: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<int>::size_type' {aka 'long unsigned int'} [-Wsign-compare]
   18 |    assert(idx!=s.size());
      |           ~~~^~~~~~~~~~

• Subtask 1: 10 / 10
• Subtask 2: 0 / 20
• Subtask 3: 0 / 20
• Subtask 4: 0 / 15
• Subtask 5: 0 / 20
• Subtask 6: 0 / 15