OJ-Problems-Source/HDOJ/2160_autoAC.cpp

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#include<iostream>
using namespace std;
int pig[22];
int main()
{
int t,n,i;
pig[1]=1;pig[2]=2;pig[3]=3;
for(i=4;i<=20;i++)
pig[i]=pig[i-1]+pig[i-1]-pig[i-3];
cin>>t;
while(t--)
{
cin>>n;
cout<<pig[n]<<endl;
}
return 0;
}