Submission #498062

#	Time	Username	Problem	Language	Result	Execution time	Memory
498062		MohamedAliSaidane	Job Scheduling (CEOI12_jobs)	C++14	0 / 100	183 ms	14996 KiB

jobs

#pragma GCC target ("avx2")
#pragma GCC optimization ("O3")
#pragma GCC optimization ("unroll-loops")


#include <bits/stdc++.h>
using namespace std;

typedef long long ll;
typedef unsigned long long ull;
typedef long double ld;
typedef pair<int,int> pii;
typedef pair<ll,ll> pll;
typedef pair<ld,ld> pld;
typedef vector<int> vi;
typedef vector<ll> vll;
typedef vector<pii> vpi;
typedef vector<pll> vpl;
typedef vector<pld> vpd;

#define pb push_back
#define popb pop_back
#define all(v) (v).begin(),(v).end()
#define ff first
#define ss second

const ll MOD = 1e9 + 7;
const ll INF = 1e18;
int nx[4] = {1,-1,0,0}, ny[4] = {0,0,1,-1};
ll gcd(ll a , ll b) {return b ? gcd(b , a % b) : a ;}
ll lcm(ll a, ll b){return (a / gcd(a, b)) * b;}

int n, d, m;
vpi req;
vector<vi> feas;
vector<vi> cur;
bool test(int x)
{
    int prec = 0;
    //vector<vi> tuc;
    for(int i=  1; i <= n; i ++)
    {
        //vi day;
        for(int j = prec; j < min(prec + x,m); j ++)
        {
            if(i - req[j].ff > d)
            {
                return false;
            }
            //day.pb(req[j].ss);
        }
        //if(!day.empty())
          //  tuc.pb(day);
        prec += x;
    }
    //cur.clear();
    //cur = tuc;
    return true;
}
void solve()
{
    cin >> n>> d >> m;
    for(int i = 0; i < m; i ++)
    {
        int x; cin >> x;
        req.pb({x,i+1});
    }
    sort(all(req));
    int debut = 1;
    int fin = m;
    int ans = m;
    while(debut <= fin)
    {
        int mid = (debut+fin)/2;
        if(test(mid))
        {
            ans = mid;
            fin = mid -1;
        }
        else
            debut = mid + 1;
    }
    cout << ans << '\n';
}
int main()
{
    ios::sync_with_stdio(false);
    cin.tie(0); cout.tie(0);
    int tt = 1;
    while(tt--)
        solve();
}

Compilation message (stderr)

jobs.cpp:2: warning: ignoring '#pragma GCC optimization' [-Wunknown-pragmas]
    2 | #pragma GCC optimization ("O3")
      | 
jobs.cpp:3: warning: ignoring '#pragma GCC optimization' [-Wunknown-pragmas]
    3 | #pragma GCC optimization ("unroll-loops")
      |

• Subtask 1: 0 / 100