Submission #441761

#	Time	Username	Problem	Language	Result	Execution time	Memory
441761		Yuisuyuno	Job Scheduling (CEOI12_jobs)	C++14	95 / 100	325 ms	34756 KiB

jobs

//Nguyen Huu Hoang Minh
#include <bits/stdc++.h>
#define pb push_back
#define fi first
#define se second
#define N 1000001
#define ii pair<int, int>
#define vi vector<int>
#define int long long

using namespace std;
const int minf = -1e10;

int n, m, d;
vector<ii> a;

void readfile()
{
    ios_base::sync_with_stdio(false);
    cin.tie(0);cout.tie(0);
    cin >> n >> d >> m;
    a.resize(m+1);
    for(int i=1; i<=m; i++){
        cin >> a[i].fi;
        a[i].se = i;
    }
    sort(a.begin(),a.end());
}

bool ok(int machine){
    int endT[machine] = {0};
    int delays = minf;
    for(int i=1, cur=0; i<=m; i++, cur++){
        if (cur==machine) cur=0;
        if (endT[cur]+1 > a[i].first){
            endT[cur]++;
            delays = max(delays,endT[cur]-a[i].fi);
        }
        else endT[cur]=a[i].fi;
    }
    return delays <= d;
}

vector<int> res[100012];

void proc()
{
    int l = 0, r = m, ans;
    while (r >= l){
        int mid = (l+r)/2;
        if (ok(mid)){
            r = mid-1;
            ans=mid;
        }
        else l = mid+1;
    }
    cout << ans << '\n';
    int endT[ans+1] = {0};
    for(int i=1, cur=0; i<=m; i++, cur++){
        if (cur==ans) cur=0;
        endT[cur]=max(a[i].fi,endT[cur]+1);
        res[endT[cur]].pb(a[i].se);
    }
    for(int i=1; i<=n; i++){
        for(int x : res[i]) cout << x << ' ';
        cout << "0\n";
    }
}

signed main()
{
    readfile();
    proc();
    return 0;
}

Compilation message (stderr)

jobs.cpp: In function 'void proc()':
jobs.cpp:58:9: warning: 'ans' may be used uninitialized in this function [-Wmaybe-uninitialized]
   58 |     int endT[ans+1] = {0};
      |         ^~~~

• Subtask 1: 95 / 100