hdu 4450 Draw Something

#include <stdlib.h>
#include <string.h>
#include <stdio.h>
#include <ctype.h>
#include <math.h>
#include <time.h>
#include <stack>
#include <queue>
#include <map>
#include <set>
#include <vector>
#include <string>
#include <iostream>
#include <algorithm>
using namespace std;

#define ll long long
#define ls rt<<1
#define rs ls|1
#define lson l,mid,ls
#define rson mid+1,r,rs
#define middle l+r>>1
typedef pair<int,int> pii;
typedef multiset<int> mset;
typedef multiset<int>::iterator mst_it;

template <class T> T _max(T x,T y){return x>y? x:y;}
template <class T> T _min(T x,T y){return x<y? x:y;}
template <class T> void _swap(T &x,T &y){T z=x;x=y;y=z;}
template <class T> T GCD(T a,T b){for(T t;b;t=a%b,a=b,b=t);return a;}
template <class T> T LCM(T a,T b){return a/GCD(a,b)*b;}
#define clr_all(x,num) memset(x,num,sizeof(x))
#define clr(x,num,sz) memset(x,num,sizeof(x[0])*(sz+1))
#define inf 0x3F3F3F3F
#define eps (1e-9)
#define MOD 1000000007
const double pi=acos(-1.0);
const int M=500 +3;
int ts,cas=0;

int n,m;

void run(){
int i,j,k;
int res=0;
while(n--){
scanf("%d",&m);
res+=m*m;
}
printf("%d\n",res);
}

void preSof(){
}

int main(){
//freopen("input.txt","r",stdin);
//freopen("output.txt","w",stdout);
preSof();
//run();
while(~scanf("%d",&n) && n) run();
//for(scanf("%d",&ts),cas=1;cas<=ts;cas++) run();
return 0;
}