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Submission #597421

# Submission time Handle Problem Language Result Execution time Memory
597421 2022-07-16T01:47:23 Z AryamanRtunjay Job Scheduling (CEOI12_jobs) C++17
100 / 100
 150 ms 31800 KB 
#pragma GCC optimize("Ofast,unroll-loops")
#pragma GCC target("avx2,popcnt,lzcnt,abm,bmi,bmi2,fma")
#include <bits/stdc++.h>
 
using num = int64_t;
using namespace std;
#define rep(i, a, b) for(int i = a; i < (b); ++i)
#define REPI(t, n) for (num t = 0; t < n; ++t)
#define all(x) begin(x), end(x)
#define sz(x) (int)(x).size()
using ll = long long;
using pii = pair<int, int>;
using vi = vector<int>;
#ifdef TESTING
#define DEBUG(...) __VA_ARGS__
#else
#define DEBUG(...)
#endif
 
bool possible(vector<vector<num>> &jobs, num D, num M) {
    num N = sz(jobs);
    vector<num> jobsLeft(N);
    num idx = 0;
    REPI(i, N) {
        if (idx+D < i) return false;
        
        jobsLeft[i] = sz(jobs[i]);
        num spent = 0;
        while (spent < M) {
            if (idx > i) break;
            num canSpend = min(M-spent, jobsLeft[idx]);
            jobsLeft[idx] -= canSpend;
            spent += canSpend;
            if (jobsLeft[idx] == 0) ++idx;
        }
    }
    while ((idx < N) && (jobsLeft[idx] == 0)) ++idx;
    return (idx == N);
}
 
int main() {
	cin.tie(0)->sync_with_stdio(0);
	cin.exceptions(cin.failbit);
 
    num N, D, M;
    cin >> N >> D >> M;
    vector<vector<num>> jobs(N);
    REPI(i, M) {
        num x;
        cin >> x;
        --x;
        jobs[x].push_back(i+1);
    }
    num lo = 1, hi = M;
    while (lo < hi) {
        num mid = (lo+hi) >> 1;
        if (possible(jobs, D, mid)) hi = mid;
        else lo = mid+1;
    }
 
    queue<num> jobsPending;
    vector<vector<num>> ans(N);
    REPI(i, N) {
        for (num job : jobs[i]) jobsPending.push(job);
        REPI(j, lo) {
            if (jobsPending.empty()) break;
            num curJob = jobsPending.front();
            jobsPending.pop();
            ans[i].push_back(curJob);
        }
    }
    cout << lo << "\n";
    REPI(i, N) {
        for (num job : ans[i]) cout << job << " ";
        cout << "0\n";
    }
}

Subtask #1
100.0 / 100.0

# Verdict Execution time Memory Grader output
1 Correct 15 ms 4560 KB Output is correct
2 Correct 17 ms 4560 KB Output is correct
3 Correct 15 ms 4560 KB Output is correct
4 Correct 17 ms 4584 KB Output is correct
5 Correct 15 ms 4560 KB Output is correct
6 Correct 16 ms 4552 KB Output is correct
7 Correct 15 ms 4604 KB Output is correct
8 Correct 15 ms 4552 KB Output is correct
9 Correct 22 ms 8380 KB Output is correct
10 Correct 23 ms 8444 KB Output is correct
11 Correct 19 ms 3440 KB Output is correct
12 Correct 31 ms 6456 KB Output is correct
13 Correct 51 ms 11776 KB Output is correct
14 Correct 86 ms 15692 KB Output is correct
15 Correct 76 ms 15176 KB Output is correct
16 Correct 110 ms 19968 KB Output is correct
17 Correct 137 ms 28852 KB Output is correct
18 Correct 123 ms 26288 KB Output is correct
19 Correct 150 ms 31800 KB Output is correct
20 Correct 135 ms 28920 KB Output is correct