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23 lines
503 B
23 lines
503 B
#include <bits/stdc++.h>
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using namespace std;
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//单个数字是不是质数的判断
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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 L, ans, 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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ans += i;
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if (ans <= L) cnt++, printf("%d\n", i);
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else break;
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}
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}
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printf("%d", cnt);
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return 0;
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} |