Submission #73379

#	Time	Username	Problem	Language	Result	Execution time	Memory
73379		jiaqing23	Toys (CEOI18_toy)	C++14	0 / 100	3 ms	520 KiB

toy

#include <bits/stdc++.h>
#include <ext/pb_ds/assoc_container.hpp>
#include <ext/pb_ds/tree_policy.hpp>

using namespace std;
using namespace __gnu_pbds;

#define fi first
#define se second
#define mp make_pair
#define pb push_back
#define pop pop_back
#define fbo find_by_order
#define ook order_of_key

typedef long long ll;
typedef pair<ll,ll> pi;
typedef vector<ll> vi;
typedef long double ld;
typedef tree<ll, null_type, less<ll>, rb_tree_tag, tree_order_statistics_node_update> pbds;
typedef set<ll>::iterator sit;
typedef map<ll,ll>::iterator mit;
typedef pair<int,pair<int,int> > tri;

unordered_set<ll> ans;
ll n;
vector<ll> fac;

void factorize(ll n, ll now, ll smallfac){
    if(now == n){
        int tem = -fac.size();
        for(int i = 0; i < fac.size(); i++) tem+=fac[i];
        ans.insert(tem);
    }

    for(int i = smallfac; i*now <= n; i++){
        if((n/now) % i == 0){
            fac.pb(i);
            factorize(n, now*i, i);
            fac.pop();
        }
    }
}

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

    cin >> n;
    factorize(n, 1, 2);

    cout<<ans.size()<<endl;
    for(unordered_set<ll>::iterator it = ans.begin(); it!=ans.end(); it++){
        cout<<*it<<' ';
    }
	return 0;
}

Compilation message (stderr)

toy.cpp: In function 'void factorize(ll, ll, ll)':
toy.cpp:32:26: warning: comparison between signed and unsigned integer expressions [-Wsign-compare]
         for(int i = 0; i < fac.size(); i++) tem+=fac[i];
                        ~~^~~~~~~~~~~~

• Subtask 1: 0 / 19
• Subtask 2: 0 / 20
• Subtask 3: 0 / 20
• Subtask 4: 0 / 20
• Subtask 5: 0 / 21