제출 #714435

#	제출 시각	아이디	문제	언어	결과	실행 시간	메모리
714435		stevancv	Toys (CEOI18_toy)	C++14	100 / 100	2949 ms	4448 KiB

toy

#include <bits/stdc++.h>
#define ll long long
#define ld long double
#define sp ' '
#define en '\n'
#define smin(a, b) a = min(a, b)
#define smax(a, b) a = max(a, b)
using namespace std;
const int N = 1e5 + 2;
const int M = 1e6 + 2;
const ll linf = 1e18;
vector<int> d;
set<int> ans;
int kolko;
void Resi(int i, int n, int s) {
    if (n == 1) {
        ans.insert(s);
        kolko++;
        return;
    }
    if (i == d.size() || n < d[i]) return;
    if (n % d[i] == 0) Resi(i, n / d[i], s + d[i] - 1);
    Resi(i + 1, n, s);
}
int main() {
    ios::sync_with_stdio(false);
    cin.tie(0);
    cout.tie(0);
    int n; cin >> n;
    for (int i = 2; i * i <= n; i++) {
        if (n % i == 0) {
            d.push_back(i);
            if (i * i != n) d.push_back(n / i);
        }
    }
    d.push_back(n);
    sort(d.begin(), d.end());
    Resi(0, n, 0);
    cout << ans.size() << en;
    for (int i : ans) cout << i << sp;
    cout << en;
    return 0;
}

컴파일 시 표준 에러 (stderr) 메시지

toy.cpp: In function 'void Resi(int, int, int)':
toy.cpp:21:11: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<int>::size_type' {aka 'long unsigned int'} [-Wsign-compare]
   21 |     if (i == d.size() || n < d[i]) return;
      |         ~~^~~~~~~~~~~

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