#include<bits/stdc++.h>
//#define int long long
using namespace std;
inline int read()
{
   int x=0,f=1;char ch=getchar();
   while (ch<'0'||ch>'9'){if (ch=='-') f=-1;ch=getchar();}
   while (ch>='0'&&ch<='9'){x=(x<<3)+(x<<1)+ch-48;ch=getchar();}
   return x*f;
}
void write(int x)
{
   if(x<0)putchar('-'),x=-x;
   if(x<10)putchar(x+'0');
   else write(x/10),putchar(x%10+'0');
}
const int N=1e5;
const int mod=1e9+7;
int n;
struct node{
	int a,b;
}w[N];
int ans=INT_MAX;
signed main(){
	n=read();
	for(int i=1;i<=n;i++)w[i].a=read(),w[i].b=read();
	for(int i=0;i<(1<<n)-1;i++){
		int x=i;
		int cnt=0;
		int aa=0;
		int bb=0;
		while(cnt<n){
			if(x&1)aa+=w[++cnt].a;
			else bb+=w[++cnt].b; 
			x>>=1;
		}
		ans=min(ans,abs(aa-bb));
	} 
	cout<<ans<<"\n";
    return 0;
}