#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;}

char wbuf[1<<28];

#define WTHI(v) {long _z=v,_n=0,_d=0;while(++_n,_d=_d<<8|0x30|_z%10,_z/=10);*(long*)wp=_d;wp+=_n;}
#define WTLO(v) {long _z=v,_n=8,_d=0;while(_d=_d<<8|0x30|_z%10,_z/=10,--_n);*(long*)wp=_d;wp+=8;}
#define wt(v) WTHI(v)

#define rep(v,e) for(int v=0;v<e;++v)
#define rep3(v,s,e) for(int v=s;v<e;++v)
#define min(a,b) (a<=b?a:b)
#define max(a,b) (a>=b?a:b)
#define chmin(v,a) (v=v<=a?v:a)
#define chmax(v,a) (v=v>=a?v:a)

int a[200000];

main(){
	char*rp=mmap(0l,1l<<28,1,2,0,0ll);
	char*wp=wbuf;

	rd(n);
	int s=0;
	rep(i,24){
		rd(ai);
		a[i]=ai;
		s+=ai;
	}
	int b=s;
	rep3(i,24,n){
		rd(ai);
		a[i]=ai;
		s+=ai-a[i-24];
		chmax(b,s);
	}
	rd(q);
	rep(i,q){
		rd(t);
		rd(v);
		a[--t]=v;
		s=0;
		int x=max(24,t);
		int y=min(t+24,n);
		rep3(i,x-24,x){
			s+=a[i];
		}
		chmax(b,s);
		rep3(i,x,y){
			s+=a[i]-a[i-24];
			chmax(b,s);
		}
		wt(b);
		*wp++=10;
	}
	write(1,wbuf,wp-wbuf);
	_exit(0);
}