Submission #709906

#	Time	Username	Problem	Language	Result	Execution time	Memory
709906		groshi	Job Scheduling (CEOI12_jobs)	C++17	100 / 100	357 ms	17208 KiB

jobs

#include<iostream>
#include<vector>
#include<algorithm>
#include<queue>
using namespace std;
vector<pair<int,int> > Q;
int n,d,m;
void wypisz(int x)
{
    cout<<x<<"\n";
    queue<pair<int,int> > kolejka;
    bool git=1;
    int gdzie=0;
    for(int i=1;i<=n;i++)
    {
        while(gdzie<Q.size() && Q[gdzie].first==i)
        {
            kolejka.push(Q[gdzie]);
            gdzie++;
        }
        for(int j=1;j<=x;j++)
        {
            if(kolejka.size()==0)
                break;
            int kiedy=kolejka.front().first;
            cout<<kolejka.front().second<<" ";
            kolejka.pop();
        }
        cout<<"0\n";
    }
}
bool git(int x)
{
    queue<pair<int,int> > kolejka;
    bool git=1;
    int gdzie=0;
    for(int i=1;i<=n;i++)
    {
        while(gdzie<Q.size() && Q[gdzie].first==i)
        {
            kolejka.push(Q[gdzie]);
            gdzie++;
        }
        for(int j=1;j<=x;j++)
        {
            if(kolejka.size()==0)
                break;
            int kiedy=kolejka.front().first;
            if(kiedy+d<i)
            {
                git=0;
                break;
            }
            kolejka.pop();
        }
        if(git==0)
            break;
    }
    if(git && kolejka.size()==0)
        return 1;
    else return 0;
}
int32_t main()
{
    cin.tie(0);
    cout.tie(0);
    ios_base::sync_with_stdio(0);
    int x;
    cin>>n>>d>>m;
    for(int i=1;i<=m;i++)
    {
        cin>>x;
        Q.push_back({x,i});
    }
    sort(Q.begin(),Q.end());
    int pocz=1,kon=m+1,sre,ostd;
    while(pocz<kon)
    {
        sre=(pocz+kon)/2;
        if(git(sre))
        {
            ostd=sre;
            kon=sre;
        }
        else pocz=sre+1;
    }
    wypisz(ostd);
    return 0;
}

Compilation message (stderr)

jobs.cpp: In function 'void wypisz(int)':
jobs.cpp:16:20: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<std::pair<int, int> >::size_type' {aka 'long unsigned int'} [-Wsign-compare]
   16 |         while(gdzie<Q.size() && Q[gdzie].first==i)
      |               ~~~~~^~~~~~~~~
jobs.cpp:25:17: warning: unused variable 'kiedy' [-Wunused-variable]
   25 |             int kiedy=kolejka.front().first;
      |                 ^~~~~
jobs.cpp:12:10: warning: unused variable 'git' [-Wunused-variable]
   12 |     bool git=1;
      |          ^~~
jobs.cpp: In function 'bool git(int)':
jobs.cpp:39:20: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<std::pair<int, int> >::size_type' {aka 'long unsigned int'} [-Wsign-compare]
   39 |         while(gdzie<Q.size() && Q[gdzie].first==i)
      |               ~~~~~^~~~~~~~~
jobs.cpp: In function 'int32_t main()':
jobs.cpp:87:11: warning: 'ostd' may be used uninitialized in this function [-Wmaybe-uninitialized]
   87 |     wypisz(ostd);
      |     ~~~~~~^~~~~~

• Subtask 1: 100 / 100