Submission #744283

#	Time	Username	Problem	Language	Result	Execution time	Memory
744283		vjudge1	Job Scheduling (CEOI12_jobs)	C++17	100 / 100	178 ms	14520 KiB

jobs

#include<bits/stdc++.h>

using namespace std;

using ll = long long ;
using pii = pair<ll , ll> ;
using i3 = tuple<ll , ll , ll> ;

const int N = 1e6+5 ;
const int MOD = 1e9+7 ;

ll n , d , m ;
pii S[N] ;

bool solve(ll mid){

    ll day = 1 , cnt = 0 ;
    for(int i=1;i<=m;i++){
        if(day < S[i].first){
            day = S[i].first ;
            cnt = 0 ;
        }
        if(day <= S[i].first + d){ // do job i-th
            cnt++ ;
        }
        else {
            return false ;
        }
        if(cnt == mid){
            day++;
            cnt = 0 ;
        }
    }

    if(cnt == 0) day--;

    return day <= n ;
}

int main(){
    ios_base::sync_with_stdio(0); cin.tie(0);

    cin >> n >> d >> m ;
    for(int i=1, x;i<=m;i++){
        cin >> x ;
        S[i] = {x , i};
    }

    sort(S+1 , S+m+1) ;

    ll l = 1 , r = m , ans = 0 ;

    while(l <= r){
        ll mid = (l+r)/2 ;

        if(solve(mid)){
            r = mid-1 ;
            ans = mid ;
        }
        else {
            l = mid+1 ;
        }
    }

    cout << ans << "\n" ;
    for(int i=1;i<=n;i++){
        cout << "0\n" ;
    }
}

• Subtask 1: 100 / 100