UVA-1605 Building for UN （构造）

# include<iostream>
# include<cstdio>
# include<cstring>
# include<algorithm>
using namespace std;

int main()
{
int n,flag=0;
while(~scanf("%d",&n))
{
if(flag)
printf("\n");
flag=1;
printf("2 %d %d\n",n,n);
for(int i=0;i<n;++i){
for(int j=0;j<n;++j)
printf("%c",(i<26)?(i+'A'):(i-26+'a'));
printf("\n");
}
printf("\n");
for(int i=0;i<n;++i){
for(int j=0;j<n;++j)
printf("%c",(j<26)?(j+'A'):(j-26+'a'));
printf("\n");
}
}
return 0;
}