Submission #341204

#	Time	Username	Problem	Language	Result	Execution time	Memory
341204		YJU	Arranging Shoes (IOI19_shoes)	C++14	10 / 100	1 ms	512 KiB

shoes

#include<bits/stdc++.h>
#include"shoes.h"
#pragma GCC optimize("unroll-loops,no-stack-protector")
using namespace std;
typedef long long ll;
typedef long double ld;
typedef pair<ll,ll> pll;
const ll MOD=1e9+7;
const ll MOD2=998244353;
const ll N=5e3+7;
const ll K=350;
const ld pi=acos(-1);
const ll INF=(1LL<<60);
#define SQ(i) ((i)*(i))
#define REP(i,n) for(ll i=0;i<n;i++)
#define REP1(i,n) for(ll i=1;i<=n;i++)
#define pb push_back
#define mp make_pair
#define X first
#define Y second
#define setp setprecision
#define lwb lower_bound
#define SZ(_a) (ll)_a.size()

ll count_swaps(vector<int> s){
	ll ans=0,n=SZ(s);
	map<ll,queue<ll> > m;
	REP(i,n){
		if(SZ(m[-s[i]])){
			ans+=i-m[-s[i]].front()-1+(s[i]<0?1:0);
			m[-s[i]].pop();
		}else{
			m[s[i]].push(i);
		}
	}
	return ans;
}

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