Submission #341097

#	Time	Username	Problem	Language	Result	Execution time	Memory
341097		israeladewuyi	Arranging Shoes (IOI19_shoes)	C++17	50 / 100	1091 ms	3200 KiB

shoes

#include <bits/stdc++.h>
using namespace std;
 
typedef long long ll;
typedef vector<int> vi;
typedef vector<string> vs;
#define PB push_back
#define pb pop_back
#define in insert 
#define endl "\n"
const unsigned int M = 1000000007;
 
ll count_swaps(vi a){
	ll n = (int)a.size()/2, ans=0;
	while(n--){
    	int x = a[0], ind = 1;
    	while(a[ind]!= -x) ind++;
    	if(x<0) ans+=ind-1;
   		else    ans+=ind;
    	a.erase(a.begin()+ind);
    	a.erase(a.begin());
	}
return ans;
	
	
	return ans;
}
 
//int main(){
//	vi v;
//	v.PB(-2);
//	v.PB(2);
//	v.PB(2);
//	v.PB(-2);
//	cout<<count_swaps(v);
//}

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