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Re:100题留念,有此里程碑,将一如既往!!!^_^In Reply To:Re:100题留念,有此里程碑,将一如既往!!!^_^ Posted by:vltam1n at 2009-12-17 11:04:22 > hehehe.
#include<iostream>
using namespace std;
int main()
{
double n,j;
while (cin>>n&&n!=0)
{ double s=0,i=1,t=0;
for(i=1;;i++)
{
if(i*(i+1)<=2*n)
{
if(i*(i+1)==2*n)
break;
}
else if(i*(i+1)>2*n&&(i*(i-1)<2*n))
{ double m;
i--;
m=i*(i+1)/2;
t=n-m;
break;
}
}
if(t==0)
{
for(int j=1;j<=i;j++)
s=s+j*j;
}
else if(t!=0)
{
for(int j=1;j<=i;j++)
s=s+j*j;
s=s+t*(i+1);
}
cout<<n<<" "<<s<<endl;}
return 0;
}
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