#include using namespace std; #define inf INT_MAX #define INF LLONG_MAX #define ll long long #define ull unsigned long long #define M (int)(1e9+7) #define P pair #define PLL pair #define FOR(i,m,n) for(int i=(int)m;i<(int)n;i++) #define RFOR(i,m,n) for(int i=(int)m;i>=(int)n;i--) #define rep(i,n) FOR(i,0,n) #define rrep(i,n) RFOR(i,n,0) #define all(a) a.begin(),a.end() #define IN(a,n) rep(i,n){ cin>>a[i]; } const int vx[4] = {0,1,0,-1}; const int vy[4] = {1,0,-1,0}; #define PI 3.14159265 #define F first #define S second #define PB push_back #define EB emplace_back #define int ll #define vi vector int n; int a[200100]; int b[200100]; signed main(){ cin.tie(0); ios::sync_with_stdio(false); cin>>n; rep(i,n){ cin>>a[i+1]; } FOR(i,1,n+1){ b[i]=a[i]+b[i-1]; } rep(i,n+1){ //cout<>q; while(q--){ int t,v; cin>>t>>v; FOR(i,t,t+24){ if(i>n) break; b[i]+=v-a[t]; } FOR(i,t,t+24){ if(i>n) break; if(i-24<0) continue; ans=max(ans,b[i]-b[i-24]); } a[t]=v; cout<