C :

#include<stdio.h>   

int main(){ 
	int n,i,sum=0;
	scanf("%d",&n);
	
	
	for(i = 1;i <= n;i++){
		sum += i * i; 
	}
	
	printf("%d",sum);
	return 0;
} 

C++ :

#include<iostream>
using namespace std;
int main(){
	int n,s,i;
	s=0;
	i=0;
	cin>>n;
	while(n>=1&&n<=200){
		
	s=n*n;
	i=i+s;
	n=n-1;
	}

	cout<<i<<endl;
}
		

Pascal :

var
  a,i,s:longint;
begin
  read(a);
  for i:=1 to a do
    s:=s+i*i;
  write(s);
end.

Java :

import java.util.Scanner;
public class Main{
	public static void main(String[] args) {
		int n=new Scanner(System.in).nextInt();
		int sum=0;
		for(int i=1;i<=n;i++){
			sum=sum+i*i;
		}
		System.out.println(sum);
	}
}

Python :

n=int(input())
i=1
s=0
while i<=n:
    
    s=s+i*i
    i+=1
    
    
print(s)