Submission #1156952

#	TimeUTC-0	Username	Problem	Language	Result	Execution time	Memory
1156952	2025-02-25 04:29:50	Pacybwoah	Coin Collecting (JOI19_ho_t4)	C++20	37 / 100	174 ms	339968 KiB

joi2019_ho_t4

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#include<iostream>
#include<algorithm>
#include<utility>
#include<vector>
#include<cmath>
using namespace std;
typedef long long ll;
const ll inf = 1e18;
int main(){
    ios::sync_with_stdio(false);
    cin.tie(0);
    int n;
    cin >> n;
    vector<pair<ll, ll>> vec(2 * n);
    for(int i = 0; i < 2 * n; i++) cin >> vec[i].first >> vec[i].second;
    sort(vec.begin(), vec.end());
    vector<vector<ll>> dp(n + 1, vector<ll>(n + 1, inf));
    dp[0][0] = 0;
    auto calc = [&](pair<ll, ll> a, pair<ll, ll> b){
        return llabs(a.first - b.first) + llabs(a.second - b.second);
    };
    for(int i = 0; i <= n; i++){
        for(int j = 0; j <= n; j++){
            if(i > 0) dp[i][j] = min(dp[i][j], dp[i - 1][j] + calc(vec[i + j - 1], make_pair(i, 1)));
            if(j > 0) dp[i][j] = min(dp[i][j], dp[i][j - 1] + calc(vec[i + j - 1], make_pair(j, 2)));
        }
    }
    cout << dp[n][n] << "\n";
}
// g++ -std=c++17 -Wall -Wextra -Wshadow -fsanitize=undefined -fsanitize=address -o run pD.cpp
 
 
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• Subtask 1: 8 / 8
• Subtask 2: 29 / 29
• Subtask 3: 0 / 63