Submission #690467

#	Time	Username	Problem	Language	Result	Execution time	Memory
690467		Dan4Life	Road Closures (APIO21_roads)	C++17	12 / 100	50 ms	7220 KiB

roads

#include "roads.h"
#include <bits/stdc++.h>
using namespace std;
#define fi first
#define se second
#define pb push_back
#define sz(a) (int)a.size()
#define all(a) a.begin(),a.end()
using ll = long long;
const int maxn = (int)2e5+10;
const int INF = (int)1e9;

vector<ll> minimum_closure_costs(int N, vector<int> U, vector<int> V, vector<int> W) {
    vector<ll> ans(N,0ll);
    ans[0] = accumulate(all(W),0ll);
    if(accumulate(all(U),0ll)==0ll){
        sort(all(W)); reverse(all(W)); int i = 0;
        ll tot = accumulate(all(W),0ll);
        for(auto &u : ans) u=tot,tot-=W[i++];
        return ans;
    }
    ll dp[N-1][2];
    dp[0][0] = dp[0][1] = 0;
    for(int i = 1; i < N; i++){
        dp[i][0] = min(dp[i-1][1],dp[i-1][0])+W[i-1];
        dp[i][1] = dp[i-1][0];
    }
    ans[1] = min(dp[N-1][0],dp[N-1][1]);
    return ans;
}

• Subtask 1: 5 / 5
• Subtask 2: 7 / 7
• Subtask 3: 0 / 14
• Subtask 4: 0 / 10
• Subtask 5: 0 / 17
• Subtask 6: 0 / 25
• Subtask 7: 0 / 22