#pragma GCC optimize("Ofast")
#pragma GCC target("avx2")

char*mmap();
#define RD(v) int v=0;{int _c;while(_c=*rp++-48,_c>=0)v=v*10+_c;}

int d[16];
int mx[1<<16],hp[1<<16];

main(){
	char*rp=mmap(0l,1l<<28,1,2,0,0ll);
	RD(n);
	for(int i=0;i<n;++i){
		int neg=*rp==45&&++rp;
		RD(di);
		d[i]=neg?-di:di;
	}
	mx[0]=hp[0]=100;
	for(int m=0;m<1<<n;++m){
		if(hp[m]>0){
			for(int i=0;i<n;++i){
				if(~m&1<<i){
					int b=hp[m]+d[i];
					int a=mx[m]+(d[i]>=0?0:100);
					mx[m|1<<i]=a;
					b=a<b?a:b;
					hp[m|1<<i]=hp[m|1<<i]>=b?hp[m|1<<i]:b;
				}
			}
		}
	}
	{
		int v=hp[(1<<n)-1];
		int n=0;
		long d=0;
		while(++n,d=d<<8|0x30|v%10,v/=10);
		write(1,&d,n);
	}
	_exit(0);
}