#include using namespace std; #define repl(i,a,b) for(int i=(int)(a);i<(int)(b);i++) #define rep(i,n) repl(i,0,n) #define mp(a,b) make_pair((a),(b)) #define pb(a) push_back((a)) #define all(x) (x).begin(),(x).end() #define uniq(x) sort(all(x)),(x).erase(unique(all(x)),end(x)) #define fi first #define se second #define dbg(...) _dbg(#__VA_ARGS__, __VA_ARGS__) void _dbg(string){cout< void _dbg(string s,H h,T... t){int l=s.find(',');cout< ostream& operator<<(ostream& o, const pair &p){o<<"("< ostream& operator<<(ostream& o, const vector &v){o<<"[";for(T t:v){o<>n; vector a(n),b(n); rep(i,n) cin>>a[i]>>b[i]; if(n==1){ cout << min(a[0],b[0]) << endl; return 0; } int m = n/2; vector v(1<(0,idx-2); i<=min(v.size()-1,idx+2); i++){ ans = min(ans, abs(tmp + v[i])); } } assert(ans !=1234567890234567890L); cout << ans << endl; return 0; }