#include using namespace std; #define int long long #define REP(i,n) for(int i = 0;i < (int)(n);i++) #define RREP(i,n) for(int i = (int)n-1;i >= 0;i--) #define FOR(i,s,n) for(int i = s;i < (int)n;i++) #define RFOR(i,s,n) for(int i = (int)n-1;i >= s;i--) #define ALL(a) a.begin(),a.end() templateinline bool CHMAX(T&a,T b){if(ainline bool CHMIN(T&a,T b){if(a>b){a = b;return true;}return false;} constexpr long long INF = 1e18; signed main(){ int N; cin>>N; vectortapi(N,INF); REP(i,N){ int t; cin >> t; CHMIN(tapi[i],t); } int end = INF; vectory(N); REP(i,N){ cin>>y[i]; CHMIN(end,tapi[i]+y[i]); } REP(i,N){ CHMIN(tapi[i],max(0ll,end-y[i])); } cout<