Submission #1126463

#	Time	Username	Problem	Language	Result	Execution time	Memory
1126463		irmuun	Coin Collecting (JOI19_ho_t4)	C++20	37 / 100	282 ms	339968 KiB

joi2019_ho_t4

#include <bits/stdc++.h>

using namespace std;

#define ll long long
#define pb push_back
#define ff first
#define ss second
#define all(s) s.begin(),s.end()
#define rall(s) s.rbegin(),s.rend()

int main(){
    ios_base::sync_with_stdio(false); cin.tie(0); cout.tie(0);
    ll n;
    cin>>n;
    vector<pair<ll,ll>>p(2*n);
    for(ll i=0;i<2*n;i++){
        cin>>p[i].ff>>p[i].ss;
    }
    sort(all(p));
    ll dp[n+5][n+5];
    for(ll i=0;i<=n;i++){
        for(ll j=0;j<=n;j++){
            dp[i][j]=1e18;
        }
    }
    dp[0][0]=0;
    for(ll i=0;i<=n;i++){
        for(ll j=0;j<=n;j++){
            if(i>0){
                dp[i][j]=min(dp[i][j],dp[i-1][j]+abs(p[i+j-1].ff-i)+abs(p[i+j-1].ss-1));
            }
            if(j>0){
                dp[i][j]=min(dp[i][j],dp[i][j-1]+abs(p[i+j-1].ff-j)+abs(p[i+j-1].ss-2));
            }
        }
    }
    cout<<dp[n][n];
}

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