제출 #729565

#	제출 시각	아이디	문제	언어	결과	실행 시간	메모리
729565		Baytoro	Toys (CEOI18_toy)	C++17	100 / 100	2372 ms	4312 KiB

toy

#include <bits/stdc++.h>
using namespace std;
#define ios ios::sync_with_stdio(false); cin.tie(NULL);cout.tie(NULL);
#define pb push_back
#define all(x) x.begin(), x.end()
#define rall(x) x.rbegin(), x.rend()
#define fr first
#define sc second
#define endl '\n'
#define ll long long
#define int long long
void fopn(string name){
	freopen((name+".in").c_str(),"r",stdin);
	freopen((name+".out").c_str(),"w",stdout);
}
const ll INF=1e18,mod=1e9+9,N=2e5+5;
set<int> st;
void calc(int x, int sum, int pre){
	if(x==1){
		st.insert(sum);
		return;
	}
	for(int i=1;i<=sqrt(x);i++){
		if(x%i==0){
			if(i>=pre && i!=1) calc(x/i, sum+i-1,i);
			if(x/i>=pre && x/i!=i) calc(i, sum+x/i-1,x/i);
		}
	}
}
void solve(){
	int x;cin>>x;
	calc(x,0,1);
	cout<<st.size()<<endl;
	for(auto it: st)
		cout<<it<<' ';
}
main(){
	//fopn("friendcross");
	ios;
	int T=1;
	//cin>>T;
	for(int i=1;i<=T;i++){
		//cout<<"Case #"<<i<<": ";
		solve();
	}
}

컴파일 시 표준 에러 (stderr) 메시지

toy.cpp:37:1: warning: ISO C++ forbids declaration of 'main' with no type [-Wreturn-type]
   37 | main(){
      | ^~~~
toy.cpp: In function 'void fopn(std::string)':
toy.cpp:13:9: warning: ignoring return value of 'FILE* freopen(const char*, const char*, FILE*)' declared with attribute 'warn_unused_result' [-Wunused-result]
   13 |  freopen((name+".in").c_str(),"r",stdin);
      |  ~~~~~~~^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
toy.cpp:14:9: warning: ignoring return value of 'FILE* freopen(const char*, const char*, FILE*)' declared with attribute 'warn_unused_result' [-Wunused-result]
   14 |  freopen((name+".out").c_str(),"w",stdout);
      |  ~~~~~~~^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~

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