Submission #938236

#	Time	Username	Problem	Language	Result	Execution time	Memory
938236		LittleOrange	Coin Collecting (JOI19_ho_t4)	C++17	0 / 100	1 ms	500 KiB

joi2019_ho_t4

#include<bits/stdc++.h>
using namespace std;
using ll = long long;
struct pos{
    ll x,y;
    bool operator<(const pos &o) const{
        return x!=o.x?x<o.x:y<o.y;
    }
};
ll dis(pos a, pos b){
    return abs(a.x-b.x)+abs(a.y-b.y);
}
int main(){
    ios::sync_with_stdio(0);cin.tie(0);
    ll n;
    cin >> n;
    vector<pos> a(n*2);
    for(pos &o : a) cin >> o.x >> o.y;
    sort(a.begin(),a.end());
    ll ans = 0;
    vector<pos> b(n*2);
    for(ll i = 0;i<n;i++){
        b[i<<1] = {i+1,1};
        b[i<<1|1] = {i+1,2};
    }
    for(ll j = 0;j<5;j++){
        for(ll i = 0;i<n*2;i++){
            for(ll k = i+1;k<min(i+4,n*2);k++){
                if (dis(a[i],b[k])+dis(a[k],b[i])<dis(a[i],b[i])+dis(a[k],b[k])){
                    swap(a[i],a[k]);
                }
            }
        }
    }
    for(ll i = 0;i<n*2;i++) ans += dis(a[i],b[i]);
    cout << ans << "\n";
}

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