Submission #944242

#	Time	Username	Problem	Language	Result	Execution time	Memory
944242		phoenix0423	Toys (CEOI18_toy)	C++17	59 / 100	5049 ms	1832 KiB

toy

#include<bits/stdc++.h>
using namespace std;
typedef long long ll;
typedef pair<ll, ll> pll;
#define fastio ios::sync_with_stdio(false), cin.tie(0)
#define pb push_back
#define eb emplace_back
#define f first
#define s second
#define int long long
const int maxn = 2e5 + 5;
 
signed main(void){
    fastio;
    int n;
    cin>>n;
    vector<int> p;
    for(int i = 1; i <= sqrt(n); i++){
        if(n % i == 0){
            if(i != 1) p.pb(i);
            if(i != n / i) p.pb(n / i);
        }
    }
    sort(p.begin(), p.end());
    map<int, int> mp;
    set<int> ans;
    for(int i = 0; i < p.size(); i++) mp[p[i]] = i;
    auto dfs = [&](auto dfs, int cur, int lst, int cnt) ->void{
        if(cur == n){
            ans.insert(cnt);
            return;
        }
        for(int i = lst; i < p.size(); i++){
            if(n % (cur * p[i])) continue;
            dfs(dfs, cur * p[i], i, cnt + p[i] - 1);
        }
    };
    dfs(dfs, 1, 0, 0);
    cout<<ans.size()<<"\n";
    for(auto x : ans) cout<<x<<" ";
    cout<<"\n";
}

Compilation message (stderr)

toy.cpp: In function 'int main()':
toy.cpp:27:22: warning: comparison of integer expressions of different signedness: 'long long int' and 'std::vector<long long int>::size_type' {aka 'long unsigned int'} [-Wsign-compare]
   27 |     for(int i = 0; i < p.size(); i++) mp[p[i]] = i;
      |                    ~~^~~~~~~~~~
toy.cpp: In instantiation of 'main()::<lambda(auto:23, long long int, long long int, long long int)> [with auto:23 = main()::<lambda(auto:23, long long int, long long int, long long int)>]':
toy.cpp:38:21:   required from here
toy.cpp:33:28: warning: comparison of integer expressions of different signedness: 'long long int' and 'std::vector<long long int>::size_type' {aka 'long unsigned int'} [-Wsign-compare]
   33 |         for(int i = lst; i < p.size(); i++){
      |                          ~~^~~~~~~~~~

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