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27 lines
610 B
27 lines
610 B
#include <bits/stdc++.h>
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using namespace std;
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int L;
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int sum; // 已经放到口袋里的数字和
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// 检查数字是不是质数
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bool isPrime(int n) {
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if (n < 2) return false;
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for (int i = 2; i <= n / i; i++)
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if (n % i == 0) return false;
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return true;
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}
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int cnt;
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int main() {
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cin >> L;
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for (int i = 2;; i++) {
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if (isPrime(i)) {
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if (sum + i <= L) {
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cout << i << endl;
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cnt++;
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sum = sum + i;
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} else
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break;
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}
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}
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cout << cnt << endl;
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return 0;
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} |