L1-015 跟奥巴马一起画方块 (15 分) 四舍五入
#include <iostream>
#include <algorithm>
#include <cmath>
#include <map>
#include <cstdio>
#include <sstream>
using namespace std;
#define maxn 3000
int main()
{
int N;
char c;
cin >>N>>c;
for(int i =1;i <= round(0.5*N);i++ )
{
for (int j = 1; j <= N; j++)
cout<<c;
cout <<endl;
}
}