제출 #76962

#	제출 시각	아이디	문제	언어	결과	실행 시간	메모리
76962		IOrtroiii	Toys (CEOI18_toy)	C++14	100 / 100	4134 ms	18148 KiB

toy

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

int n;
vector<int> d;
vector<int> vals;

void brute(int pos,int prd,int sum) {
	if (pos == d.size()) return;
	if (prd == 1) {
		vals.push_back(sum);
		return;
	}
	if (prd < d[pos]) return;
	if (prd % d[pos] == 0) brute(pos, prd / d[pos], sum + d[pos] - 1);
	brute(pos + 1, prd, sum);
}

int main() {
	scanf("%d", &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);
	} 
	sort(d.begin(), d.end());
	d.push_back(n);
	brute(0, n, 0);
	sort(vals.begin(), vals.end());
	vals.resize(unique(vals.begin(), vals.end()) - vals.begin());
	cout << vals.size() << '\n';
	for (int i : vals) cout << i << ' ';
}

컴파일 시 표준 에러 (stderr) 메시지

toy.cpp: In function 'void brute(int, int, int)':
toy.cpp:9:10: warning: comparison between signed and unsigned integer expressions [-Wsign-compare]
  if (pos == d.size()) return;
      ~~~~^~~~~~~~~~~
toy.cpp: In function 'int main()':
toy.cpp:20:7: warning: ignoring return value of 'int scanf(const char*, ...)', declared with attribute warn_unused_result [-Wunused-result]
  scanf("%d", &n);
  ~~~~~^~~~~~~~~~

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