// yukicoder: No.865 24時間降水量
// 2019.8.16 bal4u

#include <stdio.h>

#if 1
#define gc() getchar_unlocked()
#define pc(c) putchar_unlocked(c)
#else
#define gc() getchar()
#define pc(c) putchar(c)
#endif

int in() {   // 非負整数の入力
	int n = 0, c = gc();
	do n = 10 * n + (c & 0xf); while ((c = gc()) >= '0');
	return n;
}

void out(int n) { // 非負整数の表示（出力）
	int i;
	char b[20];

	if (!n) pc('0');
	else {
		i = 0; while (n) b[i++] = n % 10 + '0', n /= 10;
		while (i--) pc(b[i]);
	}
	pc('\n');
}

int a[200010]; int N;
int s[200010];

int main()
{
	int i, k, d, t, v, Q, ans;
	
	N = in();
	for (i = 1; i <= N; i++) a[i] = in();
	k = 0; for (i = 1; i <= 24; i++) k += a[i];
	s[24] = k, ans = k;
	for (; i <= N; i++) {
		k += a[i] - a[i-24], s[i] = k;
		if (k > ans) ans = k;
	}
	
	Q = in(); while (Q--) {
		t = in(), v = in();
		d = v-a[t];
		if (d > 0) {
			a[t] = v;
			for (i = t; i < t+24; i++) if (i >= 24 && i <= N) {
				s[i] += d;
				if (s[i] > ans) ans = s[i];
			}
		}
		out(ans);
	}
	return 0;
}