Submission #947857

#	Time	Username	Problem	Language	Result	Execution time	Memory
947857		quanlt206	Job Scheduling (IOI19_job)	C++17	12 / 100	72 ms	10804 KiB

job

#include<bits/stdc++.h>
#define X first
#define Y second
#define all(x) begin(x), end(x)
#define FOR(i, a, b) for(int i = (a); i <= (b); i++)
#define FORD(i, b, a) for(int i = (b); i >= (a); i--)
#define REP(i, a, b) for (int i = (a); i < (b); i++)
#define mxx max_element
#define mnn min_element
#define SQR(x) (1LL * (x) * (x))
#define MASK(i) (1LL << (i))
#define Point Vector
#define left Left
#define right Right
#define div Div

using namespace std;

typedef long long ll;
typedef unsigned long long ull;
typedef double db;
typedef long double ld;
typedef pair<db, db> pdb;
typedef pair<ld, ld> pld;
typedef pair<int, int> pii;
typedef pair<int, pii> piii;
typedef pair<ll, ll> pll;
typedef pair<ll, pll> plll;
typedef pair<ll, int> pli;
typedef pair<ll, pii> plii;

template<class A, class B>
    bool maximize(A& x, B y) {
        if (x < y) return x = y, true; else return false;
    }
template<class A, class B>
    bool minimize(A& x, B y) {
        if (x > y) return x = y, true; else return false;
    }
/* END OF TEMPLATE */

const int N = 2e5 + 7;

int p[N], u[N], d[N], n;

bool checkSub1() {
    REP(i, 1, n)
        if (p[i] != i - 1) return false;
    return true;
}
namespace sub1 {
    ll Process() {
        ll res = 0, sum_t = 0;
        REP(i, 0, n) {
            sum_t+=d[i];
            res+=1LL * u[i] * sum_t;
        }
        return res;
    }
}

bool checkSub2() {
    REP(i, 1, n)
        if (p[i] != 0) return false;
    REP(i, 0, n)
        if (d[i] != 1) return false;
    return true;
}

namespace sub2 {
    ll Process() {
        vector<int> node;
        ll res = 0, sum_t = 0;
        sum_t+=d[0];
        res+=sum_t * u[0];
        REP(i, 1, n) node.push_back(i);
        sort(all(node), [=](int x, int y){
             return u[x] > u[y];
        });
        for (auto x : node) {
            sum_t+=d[x];
            res+=sum_t * u[x];
        }
        return res;
    }
}

int64_t scheduling_cost(vector<int> P, vector<int> U, vector<int> D) {
    n = P.size();
    REP(i, 0, n) {
        p[i] = P[i];
        u[i] = U[i];
        d[i] = D[i];
    }
    if (checkSub1()) {
        return sub1::Process();
    }
    if (checkSub2()) {
        return sub2::Process();
    }
}

Compilation message (stderr)

job.cpp: In function 'int64_t scheduling_cost(std::vector<int>, std::vector<int>, std::vector<int>)':
job.cpp:101:1: warning: control reaches end of non-void function [-Wreturn-type]
  101 | }
      | ^

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