Submission #145301

#	Time	Username	Problem	Language	Result	Execution time	Memory
145301		MvC	Arranging Shoes (IOI19_shoes)	C++14	50 / 100	1068 ms	4100 KiB

shoes

#include "shoes.h"
#pragma GCC target("avx2")
#pragma GCC optimization("O3")
#pragma GCC optimization("unroll-loops")
#include<bits/stdc++.h>
#define rc(x) return cout<<x<<endl,0
#define pb push_back
#define mkp make_pair
#define in insert
#define er erase
#define fd find
#define fr first
#define sc second
typedef long long ll;
typedef long double ld;
const ll INF=0x3f3f3f3f3f3f3f3f;
const ll llinf=(1LL<<62);
const int inf=(1<<30);
const int nmax=2e5+50;
const int mod=1e9+7;
using namespace std;
int i,j,n,rs,a[nmax];
long long count_swaps(vector<int> s) 
{
	n=(int)s.size();
	for(i=1;i<=n;i++)a[i]=s[i-1];
	for(i=1;i<=n;i++)
	{
		for(j=i+1;j<=n;j++)if(a[j]==-a[i])break;
		if(j<=n)
		{
			while(j>i+1)
			{
				rs++;
				swap(a[j],a[j-1]);
				j--;
			}
			if(a[j]<0)swap(a[j],a[j-1]),rs++;
			i++;
		}
	}
	return rs;
}

Compilation message (stderr)

shoes.cpp:3:0: warning: ignoring #pragma GCC optimization [-Wunknown-pragmas]
 #pragma GCC optimization("O3")
 
shoes.cpp:4:0: warning: ignoring #pragma GCC optimization [-Wunknown-pragmas]
 #pragma GCC optimization("unroll-loops")

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