Submission #425239

#	Time	Username	Problem	Language	Result	Execution time	Memory
425239		MOUF_MAHMALAT	Toys (CEOI18_toy)	C++14	100 / 100	803 ms	4516 KiB

toy

#include<bits/stdc++.h>
#define all(s) s.begin(),s.end()
using namespace std;
typedef int ll;
ll n;
set<ll>ans,s;
vector<ll>v;
void best(ll d,ll sum,ll mx)
{
    if(d==1)
        return void(ans.insert(sum));
    for(ll i=0; i<v.size(); i++)
    {
        if(v[i]>mx)
            break;
        if(d%v[i]==0)
            best(d/v[i],sum+v[i]-1,v[i]);
    }
}
int main()
{
    ios_base::sync_with_stdio(0);
    cin.tie(0);
    cout.tie(0);
    cin>>n;
    for(ll i=1; i*i<=n; i++)
        if(n%i==0)
        {
            s.insert(i);
            s.insert(n/i);
        }
    s.erase(s.begin());
    for(auto z:s)
        v.push_back(z);
    best(n,0,n);
    cout<<ans.size()<<endl;
    for(auto z:ans)
        cout<<z<<" ";
    return 0;
}

Compilation message (stderr)

toy.cpp: In function 'void best(ll, ll, ll)':
toy.cpp:12:18: warning: comparison of integer expressions of different signedness: 'll' {aka 'int'} and 'std::vector<int>::size_type' {aka 'long unsigned int'} [-Wsign-compare]
   12 |     for(ll i=0; i<v.size(); i++)
      |                 ~^~~~~~~~~

• Subtask 1: 19 / 19
• Subtask 2: 20 / 20
• Subtask 3: 20 / 20
• Subtask 4: 20 / 20
• Subtask 5: 21 / 21