Submission #332366

#	Time	Username	Problem	Language	Result	Execution time	Memory
332366		nicholask	Arranging Shoes (IOI19_shoes)	C++14	Compilation error	0 ms	0 KiB

shoes

//#include "shoes.h"
#include <bits/stdc++.h>
using namespace std;
long long count_swaps(vector <int> s){
	int n=(s.size()>>1);
	if (n<=1000){
		long long ans=0;
		for (int i=0; i<n+n; i+=2){
			int wh;
			for (int j=1; ; j++){
				if (s[0]*-1==s[j]){
					wh=j;
					break;
				}
			}
			if (s[0]>0) ans++;
			ans+=wh-1;
			s.erase(s.begin()+wh);
			s.erase(s.begin());
		}
		return ans;
	} else {
		return n*1ll*(n-1);
	}
}

signed main(){
	int n;
	cin>>n;
	vector <int> v(n);
	for (int i=0; i<n; i++) cin>>v[i];
	cout<<count_swaps(v);
}

Compilation message (stderr)

/tmp/ccr77F4y.o: In function `main':
grader.cpp:(.text.startup+0x0): multiple definition of `main'
/tmp/ccJ37FCm.o:shoes.cpp:(.text.startup+0x0): first defined here
collect2: error: ld returned 1 exit status