Submission #453016

#	Time	Username	Problem	Language	Result	Execution time	Memory
453016		BT21tata	Job Scheduling (CEOI12_jobs)	C++17	0 / 100	195 ms	8148 KiB

jobs

#include<bits/stdc++.h>
// #pragma GCC target ("avx,avx2,fma")
// #pragma GCC optimize("Ofast")
// #pragma GCC optimize("unroll-loops")
typedef long long ll;
typedef long double ld;
#define SPEED ios_base::sync_with_stdio(false); cin.tie(0), cout.tie(0)
#define rall(v) (v).rbegin(),(v).rend()
#define all(v) (v).begin(),(v).end()
#define OK cerr<<"OK"<<endl<<flush
#define pii pair<int, int>
#define pll pair<ll, ll>
#define pb push_back
#define F first
#define S second
#define y0 jahdakdh
#define y1 jahsadakdakdh
#define endl '\n'
using namespace std;
const ll MOD=1e9+7;
//mt19937 rng(std::chrono::system_clock::now().time_since_epoch().count());

int n, d, m;
pii a[1000005];

bool check(int x)
{
    int day=1;
    while(day<=n)
    {
        if(day*x>n) break;
        //cout<<x<<' ' <<day<<' '<<a[day*x-1].F<<endl;
        if(a[day*x-1].F<day) return 0;
        day++;
    }
    return 1;
}

int main()
{
    SPEED;
    cin>>n>>d>>m;
    for(int i=0; i<m; i++)
    {
        cin>>a[i].F;
        a[i].F+=d;
        a[i].S=i;
    }
    sort(a, a+m);
    int l=1, r=m, mid;
    while(l<=r)
    {
        mid=(l+r)>>1;
        if(check(mid)) r=mid-1;
        else l=mid+1;
    }
    cout<<l<<endl;
    return 0;
}

• Subtask 1: 0 / 100