1027 打印沙漏 (20分)

https://pintia.cn/problem-sets/994805260223102976/problems/994805294251491328

#include <iostream>
#include <cstdio>
#include <cstring>
#include <string>
#include <cmath>
#include <algorithm>
using namespace std;
int main()
{
	int n,min=1001,c,d,e=0;
	char chr,chr1=' ';
	cin>>n>>chr;
	for(int i=1;i<=23;i++)
	{
		if((n-(2*i*i-1))<min&&(n-(2*i*i-1)>=0)) {
			c=i;
			min=n-(2*i*i-1);
		}
	}
		for(d=2*c-1;d>=1;d-=2)
		{
			if(d!=2*c-1) for(int j=1;j<=e;j++) cout<<chr1;
			for(int j=1;j<=d;j++) cout<<chr;
			cout<<endl;
			if(d!=1) e++;
		}
		for(d=3;d<=2*c-1;d+=2)
		{
			e--;
			if(d!=2*c-1) for(int j=1;j<=e;j++) cout<<chr1;
			for(int j=1;j<=d;j++) cout<<chr;
			cout<<endl;
		}
    cout<<min;
    return 0;
}