Submission #492902

#	Time	Username	Problem	Language	Result	Execution time	Memory
492902		Biaz	Coin Collecting (JOI19_ho_t4)	C++17	8 / 100	1096 ms	332 KiB

joi2019_ho_t4

#include <bits/stdc++.h>
#define int long long
//#define double long double
#define Nanase_Kurumi_aka_menhera_chan_is_mine ios::sync_with_stdio(false);cin.tie(0);cout.tie(0);
#define pb push_back
#define pi pair<double,int>
#define ALL(i) i.begin(),i.end()
#define gcd(i,j) __gcd(i,j)
#define fi first
#define se second
#define eps 0.00000001
#define ist insert
#define DNE nullptr
//#pragma GCC optimize("Ofast,unroll-loops,no-stack-protector,fast-math")
//#pragma GCC optimize("O2")
int max(int x,int y){return x>=y?x:y;}
int min(int x,int y){return x>=y?y:x;}
using namespace std;
typedef int ll;
const int N=200005;
const int M=1000005;
const int MOD=1000000007;//998244353;
const int INF=1000000000000000000;//2147483647;

int n,ans;
pi p[N];
string bit;
int calc(){
    vector<pi> a(n),b(n);
    int ai=0,bi=0;
    for (int i=0;i<2*n;i++){
        if (bit[i]=='0')
            a[ai++]=p[i];
        else b[bi++]=p[i];
    }
    int sum=0;
    for (int i=0;i<ai;i++)
        sum+=abs(a[i].fi-(i+1))+abs(1-a[i].se);
    for (int i=0;i<ai;i++)
        sum+=abs(b[i].fi-(i+1))+abs(2-b[i].se);
    return sum;
}
inline void sol(){
    cin >>n;
    for (int i=0;i<2*n;i++)
        cin >>p[i].fi>>p[i].se;
    sort(p,p+2*n);
    for (int i=0;i<n;i++)
        bit+="0";
    for (int i=0;i<n;i++)
        bit+="1";
    ans=INF;
    do{
        ans=min(ans,calc());
    }while (next_permutation(ALL(bit)));
    cout <<ans<<'\n';
}

signed main(){
    Nanase_Kurumi_aka_menhera_chan_is_mine
    int _=1;
    //cin >>_;
    while (_--) sol();
    return 0;
}

• Subtask 1: 8 / 8
• Subtask 2: 0 / 29
• Subtask 3: 0 / 63