Submission #847762

#	Time	Username	Problem	Language	Result	Execution time	Memory
847762		Dec0Dedd	Toys (CEOI18_toy)	C++14	100 / 100	1424 ms	18912 KiB

toy

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

using namespace __gnu_pbds;
using namespace std;

#pragma GCC optimize("O3")
 
int n;
vector<int> st;

void solve(int n, int s, int j) {
    if (n == 1) {
        st.push_back(s);
        return;
    }

    for (int i=1; i*i<=n; ++i) {
        if (n%i != 0) continue;
        if (i >= j) solve(n/i, s+i-1, i);
        if (n/i >= j) solve(i, s+n/i-1, n/i);
    }
}
 
int main() {
    ios_base::sync_with_stdio(0);
    cin.tie(NULL);
    cout.tie(NULL);
    cin>>n;
    solve(n, 0, 2);

    sort(st.begin(), st.end());
    st.erase(unique(st.begin(), st.end()), st.end());

    cout<<st.size()<<"\n";
    for (auto u : st) cout<<u<<" ";
    cout<<"\n";
}

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