stone pile wa

#include<stdio.h>
#include<math.h>
int main()
{
    int n,w[30],i,j,cnt;
    int total=0,ps,temto,diff,min;
    scanf("%d",&n);
    for(i=0;i<n;i++){
        scanf("%d",&w[i]);
        total=total+w[i];
    }
    min=20000000;
    ps=pow(2,n);
    for(i=0;i<ps-1;i++){
        temto=0;
        cnt=0;
        for(j=0;j<n;j++){
            if(i&(1<<j)){
                temto=temto+w[j];
            }
        }
        diff=total-temto;
        diff=temto-diff;
        if(diff<0)
            diff=-diff;
        if(min>diff)
            min=diff;
    }
    printf("%d\n",min);
    return 0;
}