Submission #548793

#	Time	Username	Problem	Language	Result	Execution time	Memory
548793		Vladth11	Toys (CEOI18_toy)	C++14	100 / 100	3155 ms	4508 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 <int> sol;
vector <int> divisors;

void bkt(int k, int n, int sum) {
   	if(n == 1) {
        sol.insert(sum);
        return;
    } 
  	if(k == divisors.size()) {
        return;
    }
    if(n < divisors[k])
        return;
    if(n % divisors[k] == 0) {
        bkt(k, n / divisors[k], sum + divisors[k] - 1);
    }
    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());
    bkt(1, 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:26:9: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<int>::size_type' {aka 'long unsigned int'} [-Wsign-compare]
   26 |    if(k == divisors.size()) {
      |       ~~^~~~~~~~~~~~~~~~~~

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