Run ID Author Problem Lang Verdict Score Time Memory Code Length Submit Time
143768 陈家宝 布阵 C++ Accepted 100 0 MS 248 KB 182 2024-04-18 13:40:22

Tests(5/5):

#include<bits/stdc++.h> using namespace std; long long a[31],n; int main(){ cin>>n; a[1]=3; a[2]=7; for(int i=3;i<=n;i++)a[i]=2*a[i-1]+a[i-2]; cout<<a[n]; return 0; }

Judgement Protocol: