제출 #494338

#	제출 시각	아이디	문제	언어	결과	실행 시간	메모리
494338		fcmalkcin	Toys (CEOI18_toy)	C++17	100 / 100	1871 ms	4352 KiB

toy

/*#pragma GCC optimize("Ofast")
#pragma GCC optimization("unroll-loops, no-stack-protector")
#pragma GCC target("avx,avx2,fma")*/

#include <bits/stdc++.h>
using namespace std;

#define ll  int
#define pll pair<ll,ll>
#define ff first
#define ss second
#define pb push_back
#define endl "\n"
mt19937 rnd(chrono::steady_clock::now().time_since_epoch().count());


const ll maxn=5e5+5;
const ll mod=1e9+7   ;
const ll base=3e18;

/// you will be the best but now you just are trash
/// goal 1/7
set<ll> st;
void dosth(ll n,ll a,ll l)
{
    if (n==1)
    {
        st.insert(a);
        return ;
    }
    for (int j=1;j*j<=n;j++)
    {
        if (n%j==0)
        {
            if (j>=l) dosth(n/j,a+j-1,j);
            if (n/j>=l) dosth(j,a+n/j-1,n/j);
        }
    }
}
int main()
{
    ios_base::sync_with_stdio(false);
    cin.tie(0);
    cout.tie(0);
    if (fopen("t.inp", "r"))
    {
        freopen("test.inp", "r", stdin);
        freopen("test.out", "w", stdout);
    }
    ll n;
    cin>> n;
    dosth(n,0,2);
    cout <<st.size()<<endl;
    for (auto to:st)
    {
        cout <<to<<" ";
    }

}
/*1
10 6
0 9 16
0 6 2
1 5 10 15
*/

컴파일 시 표준 에러 (stderr) 메시지

toy.cpp:19:15: warning: overflow in conversion from 'double' to 'int' changes value from '3.0e+18' to '2147483647' [-Woverflow]
   19 | const ll base=3e18;
      |               ^~~~
toy.cpp: In function 'int main()':
toy.cpp:47:16: warning: ignoring return value of 'FILE* freopen(const char*, const char*, FILE*)' declared with attribute 'warn_unused_result' [-Wunused-result]
   47 |         freopen("test.inp", "r", stdin);
      |         ~~~~~~~^~~~~~~~~~~~~~~~~~~~~~~~
toy.cpp:48:16: warning: ignoring return value of 'FILE* freopen(const char*, const char*, FILE*)' declared with attribute 'warn_unused_result' [-Wunused-result]
   48 |         freopen("test.out", "w", stdout);
      |         ~~~~~~~^~~~~~~~~~~~~~~~~~~~~~~~~

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