hdu 2554

#include <iostream>#include <cstdio>#include <cmath>#include <string>using namespace std;//char s[1000];//搜索试探性找规律，经实验只能算到n<=8//bool ss[1000];//bool flag;////bool is(int n)//{//for(int i=1;i<=n;i++)if(!ss[i])return 0;//for(int i=0;i<2*n;i++)cout<<s[i];//cout<<endl;//flag = 1;//return 1;//}//void en(int n)//{//if(is(n)) return ;//if(flag)return ;//for(int j=0;j<2*n;j++)//{//if(s[j]=='0')//        for(int i=1;i<=n;i++)//if(!ss[i]) if(j+i+1<2*n) {if(s[j+i+1]=='0'){//s[j]=i+'0';ss[i]=1;s[j+i+1]='0'+i;en(n);s[j]=s[j+i+1]='0';ss[i]=0;//}}else return ;//}//}int main(){  //试探性输出/*while(true){int t;cin>>t;if(t==0)break;flag = 0;memset(s,'0',sizeof(s));memset(ss,0,sizeof(ss));en(t);}*///大胆假设结论int n;while(scanf("%d",&n)&&n){if(n%4==0||(n+1)%4==0)puts("Y");else puts("N");}return 0;}