HDU 2074 叠筐

#include <iostream>
#include <cstdio>
using namespace std;
char s[85][85];
int main()
{
char a,b;
int n;
int f=0;
while(~scanf("%d %c %c",&n,&a,&b)){
if(f) cout<<endl;
if(n==1){//忘记考虑了
cout<<a<<endl;
continue;
}
int x=n/2+1;
s[x][x]=a;
for(int i=1;i<=n/2;i++){
for(int j=x-i;j<=x+i;j++){
if(i%2) s[x-i][j]=s[x+i][j]=s[j][x-i]=s[j][x+i]=b;
else s[x-i][j]=s[x+i][j]=s[j][x-i]=s[j][x+i]=a;
}
}
s[1]
=s[1][1]=s
[1]=s

=' ';
for(int i=1;i<=n;i++){
for(int j=1;j<=n;j++){
cout<<s[i][j];
}
cout<<endl;
}
f=1;
}
return 0;
}