Submission #548763

#	Time	Username	Problem	Language	Result	Execution time	Memory
548763		Vladth11	Toys (CEOI18_toy)	C++14	0 / 100	1 ms	212 KiB

toy

#include <bits/stdc++.h>
#define debug(x) cerr << #x << " " << x << "\n"
#define debugs(x) cerr << #x << " " << x << " "
 
using namespace std;
typedef long long ll;
typedef pair <ll, ll> pii;
typedef pair <pair <ll, ll>, ll > ura;
 
const ll NMAX = 1000001;
const ll VMAX = 26;
const ll INF = (1LL << 55);
const ll MOD = 90000000000000001;
const ll BLOCK = 1000000;
const ll base = 1000000001;
const ll nr_of_bits = 18;
 
set <pair <int, int> > mp;
 
set <int> sol;
vector <int> divisors;
 
void bkt(int k, int n, int sum){
    
    if(k == divisors.size()){
        return;
    }
  	if(mp.find({n, sum}) != mp.end()){
        return;
    }
    if(n == 1){
        sol.insert(sum);
        return;
    }
  	if(n < divisors[k]) return;
    if(n % divisors[k] == 0){
        mp.insert({n, sum});
        bkt(k, n / divisors[k], sum + divisors[k] - 1);
        mp.erase({n, sum});
    }
    bkt(k + 1, n, sum);
}
 
int main() {
    ios_base::sync_with_stdio(false);
    cin.tie(0);
    cout.tie(0);
    int n, i;
    cin >> n;
    for(i = 1; i * i <= n; i++){
        if(n % i == 0){
            if(n / i == i){
                divisors.push_back(i);
            }else{
                divisors.push_back(i);
                divisors.push_back(n / i);
            }
        }
    }
    sort(divisors.begin(), divisors.end());   
  	reverse(divisors.begin(), divisors.end());
    bkt(0, n, 0);
    cout << sol.size() << "\n";
    for(auto x : sol){
        cout << x << " ";
    }
    return 0;
}

Compilation message (stderr)

toy.cpp: In function 'void bkt(int, int, int)':
toy.cpp:25:10: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<int>::size_type' {aka 'long unsigned int'} [-Wsign-compare]
   25 |     if(k == divisors.size()){
      |        ~~^~~~~~~~~~~~~~~~~~

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