NYOJ 325

NYOJ 325

 
#include <stdio.h>
#define max(a,b) a>b?a:b
int V,ans,n,w[21],sum[21];
void dfs(int i,int cnt)
{
    if(i == 0)
    {
        ans = max(ans,cnt);
        return ;
    }
    if(ans == V || cnt+sum[i] <= ans)       //cut
        return ;
    if(cnt+w[i] <= V)
        dfs(i-1,cnt+w[i]);
    dfs(i-1,cnt);
}
int main()
{
    while(~scanf("%d",&n))
    {
        ans = 0;
        for(int i=1;i<=n;i++)
        {
            scanf("%d",&w[i]);
            sum[i] = sum[i-1] + w[i];
        }
        V = sum[n]/2;
        dfs(n,0);
        printf("%d\n",sum[n]-2*ans);
    }
    return 0;
}