#include<conio.h>
#include<stdio.h>
float fun(int m)
{
double y=0,d;
int i;
for(i=100;i<=m;i+=100)
{
d=(double)i*(double)i;
y+=1.0/d;
}
return y;
}
void main()
{
int n=2000;
printf("\nThe result is %lf\n",fun(n));
}
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