#include <stdio.h>
void main()
{
  int i,n;
  float s1,s2;
  s1=s2=0;
  printf("give me data --> "); scanf("%d",&n);
  for (i=1; i<=n; i++)
    if (i%2 == 1) s1+=(float)i*i;
    else s2+=(float)i*i;
  if (n % 2 == 0) {
    printf("1^2+2^2+3^2+...+%d^2=%.2f\n",n-1,s1);
    printf("1^2+2^2+3^2+...+%d^2=%.2f\n",n,s2);
  }
  else {
    printf("1^2+2^2+3^2+...+%d^2=%.2f\n",n,s1);
    printf("1^2+2^2+3^2+...+%d^2=%.2f\n",n-1,s2);
  }
}