题解 | #N阶楼梯上楼问题#
N阶楼梯上楼问题
https://www.nowcoder.com/practice/c978e3375b404d598f1808e4f89ac551
#include <iostream>
using namespace std;
int main() {
int N;
cin >> N;
int a = 1, b = 1, tmp;
if (N != 1) {
for (int i = 1; i < N; i++) {
tmp = b;
b = a + b;
a = tmp;
}
}
cout << b;
}
// 64 位输出请用 printf("%lld")
线性dp+状态压缩
