poj 3566 Building for UN

#include<iostream>#include<cstdio>#include<cstdlib>#include<cstring>#include<cmath>#include<algorithm>#include<queue>#include<time.h>using namespace std;char s[100];int main(){    int n,i,j;    while(cin>>n)    {        cout<<n<<" "<<n<<" "<<2<<endl;;        for(i=0;i<n;i++)        { if(i<=25) {     s[i]='a'+i; } else {     s[i]='A'+i-26; }        }        for(j=0;j<n;j++)        { for(i=0;i<n;i++) {     if(j<26)     {         cout<<char('a'+j);     }     else     {         cout<<char('A'+j-26);     } } cout<<endl; for(i=0;i<n;i++) {     cout<<s[i]; } cout<<endl; cout<<endl;        }    }    return 0;}