题解 | #阶乘#
阶乘
https://www.nowcoder.com/practice/e58c8a55162d49c48115bdfa5da7da56
#include <iostream>
using namespace std;
int main() {
int a;
while (cin >> a) { // 注意 while 处理多个 case
int y1 = 0, y2 = 0;
for (int i = 1, tmp = 1; i <= a; ++i) {
tmp *= i;
if (i % 2) y1 += tmp;
else y2 += tmp;
}
cout << y1 << ' ' << y2 << endl;
}
}
// 64 位输出请用 printf("%lld")
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