Submission #256287

#	Time	Username	Problem	Language	Result	Execution time	Memory
256287		Molukhyyeh	Job Scheduling (CEOI12_jobs)	C++14	46 / 100	372 ms	23672 KiB

jobs

#include <bits/stdc++.h>
using namespace std;
#define ll long long
#define all(x) x.begin(),x.end() 

int const N = 200001, M = 1e6+1;
int n, d, m;
pair<int,int> v[M];
vector<int> pr[N];

bool ok(int md){
	 if(m / md > n)return false;
     int av = md, day = 0, cur = 0; 
     for(int i = 0; i<m; ++i){
        cur = day; 
        --av;
        if(!av)av = md, ++day;
        if(cur >= v[i].first+d)return false;
     }
     return true;
} 

int main(){
    scanf("%d%d%d", &n, &d, &m);
    for(int i = 0; i<m; ++i){
    	scanf("%d", &v[i].first);
    	v[i].second = i+1;
    }
    sort(v, v+m);
    int l = 1, r = 1e9, md, an = m;
    while(l <= r){
    	 md = l + r >> 1;
    	 if(ok(md))r = md-1, an = md;
    	 else l = md+1;
    }
    printf("%d\n", an);
    int day = 1, av = an, ls = 0;
    for(int i = 0; i<m; ++i){
       pr[ls].push_back(v[i].second);
       --av; 
       if(!av)av = md, ++day, ++ls; 
    }
    for(int i = 0; i<n; ++i){
       for(auto j: pr[i])printf("%d ", j);
       puts("0");
    }
}

Compilation message (stderr)

jobs.cpp: In function 'int main()':
jobs.cpp:32:14: warning: suggest parentheses around '+' inside '>>' [-Wparentheses]
       md = l + r >> 1;
            ~~^~~
jobs.cpp:24:10: warning: ignoring return value of 'int scanf(const char*, ...)', declared with attribute warn_unused_result [-Wunused-result]
     scanf("%d%d%d", &n, &d, &m);
     ~~~~~^~~~~~~~~~~~~~~~~~~~~~
jobs.cpp:26:11: warning: ignoring return value of 'int scanf(const char*, ...)', declared with attribute warn_unused_result [-Wunused-result]
      scanf("%d", &v[i].first);
      ~~~~~^~~~~~~~~~~~~~~~~~~

• Subtask 1: 46 / 100