Problem hidden
|This problem was hidden by Editorial Board member probably because it has incorrect language|version or invalid test data, or description of the problem is not clear.|

RGB7072 - Нийлбэр 3

Өгөгдсөн сондгой тоо n хүртэлх натурал сондгой тоонуудын нийлбэрийг ол. Давталт ашиглахгүй.

Input

Сондгой натурал тоо өгөгдөнө.

Output

Нийлбэр.

Example

Input:
9

Output:
25

Нэмсэн:Bataa
Огноо:2013-01-06
Хугацааны хязгаарлалт:1s
Эх кодын хэмжээний хязгаарлалт:50000B
Memory limit:1536MB
Cluster: Cube (Intel G860)
Програмчлалын хэлүүд:ADA95 ASM32 BASH BF C NCSHARP CSHARP C++ 4.3.2 CPP C99 CLPS LISP sbcl LISP clisp D ERL FORTRAN HASK ICON ICK JAVA JS-RHINO JULIA LUA NEM NICE OCAML PAS-GPC PAS-FPC PERL PHP PIKE PRLG-swi PYTHON PYPY3 PYTHON3 RUBY SCALA SCM guile ST TCL WHITESPACE

hide comments
2020-10-25 17:22:06
#include <iostream>
using namespace std;


int main () {
int n,s=0,i=1;
cin >> n;
for(i=0;i<=n;i++)
if (i%2==0) {
i = i+1;
s = s+i;
}
cout << s << endl;
}
2020-05-12 08:33:04
, (n + 1) * (n + 1) / 4);
2020-02-15 07:04:36
OMG
#include <stdio.h>
int main()
{
int a;
scanf ("%d",&a);
if(a%2==0);
else{
int n=(a+1)*(a+1)/4;
printf ("%d",n);}
return 0;
}

Last edit: 2020-02-15 07:05:30
2019-12-03 07:51:25
bodlogoo bodooroi kk
2019-12-03 07:50:56
ez lmao

Last edit: 2019-12-03 07:51:39
2019-10-19 13:39:25
#include <cstdio>
int main()
{
int a;
scanf ("%d",&a);
int n=(a+1)*(a+1)/4;
printf ("%d",n);
return 0;
}
2019-10-10 14:44:25
OOF OOF OOF OOF OOF OOF OOF GG

Last edit: 2019-10-10 14:45:03
2019-08-16 18:12:05
eassyyyyy
i have done this without using loops haha

#include <iostream>
using namespace std;
int main() {
int n;
cin>>n;
cout<<(n+1)*(n+1)/4;
return 0;
}
2019-03-30 06:15:36
hi
2019-03-18 12:01:06
#include<bits/stdc++.h>
using namespace std;
int n,i,j=0;
int main(){
cin>>n;
for(i=1;i<=n;i++){
if(i%2==1){
j=j+i;
}
else j=j+0;
}
cout<<j;
return 0;
}
© Spoj.com. All Rights Reserved. Spoj uses Sphere Engine™ © by Sphere Research Labs.