Submission #211051

#	Time	Username	Problem	Language	Result	Execution time	Memory
211051		wiwiho	Job Scheduling (IOI19_job)	C++14	24 / 100	206 ms	18692 KiB

job

//#define NDEBUG

#include "job.h"

#include <bits/stdc++.h>
#include <bits/extc++.h>

#define StarBurstStream ios_base::sync_with_stdio(false); cin.tie(0); cout.tie(0);
#define iter(a) a.begin(), a.end()
#define riter(a) a.rbegin(), a.rend()
#define lsort(a) sort(iter(a))
#define gsort(a) sort(riter(a))
#define mp(a, b) make_pair(a, b)
#define pb(a) push_back(a)
#define eb(a) emplace_back(a)
#define pf(a) push_front(a)
#define pob pop_back()
#define pof pop_front()
#define F first
#define S second
#define printv(a, b) {bool pvaspace=false; \
for(auto pva : a){ \
    if(pvaspace) b << " "; pvaspace=true;\
    b << pva;\
}\
b << "\n";}
#define pii pair<int, int>
#define pll pair<ll, ll>
#define tiii tuple<int, int, int>
#define mt make_tuple
#define gt(t, i) get<i>(t)
#define iceil(a, b) ((a) / (b) + !!((a) % (b)))

//#define TEST

typedef long long ll;
typedef unsigned long long ull;

using namespace std;
using namespace __gnu_pbds;

const ll MOD = 1000000007;
const ll MAX = 2147483647;

template<typename A, typename B>
ostream& operator<<(ostream& o, pair<A, B> p){
    return o << '(' << p.F << ',' << p.S << ')';
}

struct comp{
    bool operator()(pair<pll, ll> a, pair<pll, ll> b){
        return a.F.F * b.F.S > b.F.F * a.F.S;
    }
};

ll scheduling_cost(vector<int> p, vector<int> u, vector<int> d){
    int n = p.size();
    vector<vector<int>> g(n);
    for(int i = 1; i < n; i++) g[p[i]].eb(i);

    std::priority_queue<pair<pll, ll>, vector<pair<pll, ll>>, comp> pq;
    pq.push(mp(mp(d[0], u[0]), 0LL));

    ll ans = 0;
    ll tm = 0;
    while(!pq.empty()){
        auto now = pq.top();
        pq.pop();
        tm += now.F.F;
        ans += tm * now.F.S;
        for(int i : g[now.S]) pq.push(mp(mp(d[i], u[i]), i));
    }

    return ans;
}

• Subtask 1: 5 / 5
• Subtask 2: 7 / 7
• Subtask 3: 12 / 12
• Subtask 4: 0 / 18
• Subtask 5: 0 / 21
• Subtask 6: 0 / 37