#include<bits/stdc++.h>
using namespace std;
int a[20005],b[20005],c[20005];
int main(){
//a[i]=a[i-1]+a[i-2];
int n;
cin>>n;
a[0]=1;//加数1
b[0]=2;//加数2
int A=1;//数位长度
int jw=0;//进位
for(int i=3;i<=n;i++){//从第3个开始算
jw=0;
for(int j=0;j<A;j++){//做加法
c[j]=a[j]+b[j]+jw;
jw=c[j]/10;//大于等于10有进位
c[j]=c[j]%10;//保留个位
}
if(jw==1){//数位变多了
c[A]=1;
A++;//记录数位增加了
}
for(int k=0;k<A;k++){
a[k]=b[k];
b[k]=c[k];
}
}
if(n==1)
cout<<1;
else if(n==2)
cout<<2;
else {
for(int i=A-1;i>=0;i--)
cout<<c[i];
}
return 0;
}
RunID | User | Nick Name | Problem ID | Result | Memory | Time | Language | Code Length | Submit Time |
75740 | jzlb_trz | 诗剑行 | A | Accepted | 2020 KiB | 0 ms | C++ | 312 bytes | 2023-03-20 09:08:42 |
75723 | jzlb_chengyixuan | 程意轩 | B | Runtime Error | 2760 KiB | 0 ms | C++ | 281 bytes | 2023-03-19 21:17:43 |
75721 | jzlb_chengyixuan | 程意轩 | B | Runtime Error | 2764 KiB | 0 ms | C++ | 278 bytes | 2023-03-19 21:15:19 |
75720 | jzlb_chengyixuan | 程意轩 | B | Runtime Error | 2764 KiB | 0 ms | C++ | 276 bytes | 2023-03-19 21:14:24 |
75716 | jzlb_chengyixuan | 程意轩 | B | Runtime Error | 2764 KiB | 0 ms | C++ | 289 bytes | 2023-03-19 21:10:46 |
75715 | jzlb_chengyixuan | 程意轩 | B | Runtime Error | 2332 KiB | 0 ms | C++ | 283 bytes | 2023-03-19 21:09:18 |
75714 | jzlb_chengyixuan | 程意轩 | B | Runtime Error | 2024 KiB | 0 ms | C++ | 276 bytes | 2023-03-19 21:07:36 |
75712 | jzlb_chengyixuan | 程意轩 | B | Runtime Error | 2024 KiB | 0 ms | C++ | 276 bytes | 2023-03-19 21:06:00 |
75711 | jzlb_chengyixuan | 程意轩 | B | Runtime Error | 2024 KiB | 0 ms | C++ | 276 bytes | 2023-03-19 21:05:18 |
75704 | jzlb_chengyixuan | 程意轩 | A | Accepted | 2020 KiB | 0 ms | C++ | 191 bytes | 2023-03-19 20:08:21 |