Problem:
Score : 200 points

Problem Statement

Joisino is about to compete in the final round of a certain programming competition.
In this contest, there are N problems, numbered 1 through N.
Joisino knows that it takes her T_i seconds to solve problem i(1≦i≦N).

Also, there are M kinds of drinks offered to the contestants, numbered 1 through M.
If Joisino takes drink i(1≦i≦M), her brain will be stimulated and the time it takes for her to solve problem P_i will become X_i seconds.
It does not affect the time to solve the other problems.

A contestant is allowed to take exactly one of the drinks before the start of the contest.
For each drink, Joisino wants to know how many seconds it takes her to solve all the problems if she takes that drink.
Here, assume that the time it takes her to solve all the problems is equal to the sum of the time it takes for her to solve individual problems.
Your task is to write a program to calculate it instead of her.

Constraints

All input values are integers.

1≦N≦100

1≦T_i≦10^5

1≦M≦100

1≦P_i≦N

1≦X_i≦10^5

Input

The input is given from Standard Input in the following format:

N
T_1 T_2 ... T_N
M
P_1 X_1
P_2 X_2
:
P_M X_M

Output

For each drink, calculate how many seconds it takes Joisino to solve all the problems if she takes that drink, and print the results, one per line.

Sample Input 1

3
2 1 4
2
1 1
2 3

Sample Output 1

6
9

If Joisino takes drink 1, the time it takes her to solve each problem will be 1, 1 and 4 seconds, respectively, totaling 6 seconds.

If Joisino takes drink 2, the time it takes her to solve each problem will be 2, 3 and 4 seconds, respectively, totaling 9 seconds.

Sample Input 2

5
7 2 3 8 5
3
4 2
1 7
4 13

Sample Output 2

19
25
30

Solution in C# (Mono 4.6.2.0) (judge verdict: Accepted)

using System;
using System.Linq;
using System.Text.RegularExpressions;
using System.Collections.Generic;
using static System.Console;
using static Program.Input;
using static Program.MyMath;
using static Program.Const;

namespace Program
{
    static class Const
    {
        public static string alp = "abcdefghijklmnopqrstuvwxyz";
        public static string Alp = "ABCDEFGHIJKLMNOPQRSTUVWXYZ";
        public const long MOD = 1000000007;
        public static int INF = int.MaxValue;
        public static long INFL = long.MaxValue;
    }
    public class Program
    {
        public static void Main()
        {
            var n = ScanInt();
            var t = ScanIntArray();
            var m = ScanInt();

            var sum = t.Sum();
            int p, x;
            for(int i=0; i<m; i++)
            {
                InputLine(out p, out x);
                WriteLine(sum - t[p - 1] + x);
            }

        }
        class Grid
        {
            string[] grid;
            public Grid(int h, int w)
            {
                grid = new string[h + 2];
                grid[0] = grid[h + 1] = new string('.', w + 2);
                for (int i = 1; i <= h; i++) grid[i] = $".{Console.ReadLine()}.";
            }

            public char this[int x, int y] { get { return grid[x + 1][y + 1]; } }
        }
    }
    static class Input
    {
        public static void InputLine(out int a, out int b) { var input = ScanIntArray(); a = input[0]; b = input[1]; }
        public static void InputLine(out int a, out int b, out int c) { var input = ScanIntArray(); a = input[0]; b = input[1]; c = input[2]; }
        public static void InputLine(out int a, out int b, out int c, out int d) { var input = ScanIntArray(); a = input[0]; b = input[1]; c = input[2]; d = input[3]; }

        public static void InputLine(out long a, out long b) { var input = ScanLongArray(); a = input[0]; b = input[1]; }
        public static void InputLine(out long a, out long b, out long c) { var input = ScanLongArray(); a = input[0]; b = input[1]; c = input[2]; }
        public static void InputLine(out long a, out long b, out long c, out long d) { var input = ScanLongArray(); a = input[0]; b = input[1]; c = input[2]; d = input[3]; }

        public static void InputLine(out string a, out string b) { var input = ScanStrArray(); a = input[0]; b = input[1]; }

        public static int ScanInt() { return int.Parse(ReadLine()); }
        static public uint ScanUint() { return uint.Parse(ReadLine()); }
        static public double ScanDouble() { return double.Parse(ReadLine()); }
        static public long ScanLong() { return long.Parse(ReadLine()); }
        static public ulong ScanUlong() { return ulong.Parse(ReadLine()); }
        static public int[] ScanIntArray() { return ReadLine().Split().Select(x => int.Parse(x)).ToArray(); }
        static public uint[] ScanUintArray() { return ReadLine().Split().Select(x => uint.Parse(x)).ToArray(); }
        static public double[] ScanDoubleArray() { return ReadLine().Split().Select(x => double.Parse(x)).ToArray(); }
        static public long[] ScanLongArray() { return ReadLine().Split().Select(x => long.Parse(x)).ToArray(); }
        static public ulong[] ScanUlongArray() { return ReadLine().Split().Select(x => ulong.Parse(x)).ToArray(); }

        static public string ScanStr() { return ReadLine(); }
        static public string[] ScanStrArray() { return ScanStr().Split(); }
        static public string RegaxReplace(this string arg1, string pattern, string replacement) { return Regex.Replace(arg1, pattern, replacement); }
    }
    static class MyMath
    {
        static public int CountBit(this long a) { if (a == 0) return 0; int c = 1; for (; a > 1; a /= 2) if (a % 2 == 1) c++; return c; }
        static public int Floor2(this int a) { int N = 1; while (N < a) N *= 2; return N / 2; }
        static public long Floor2(this long a) { long N = 1; while (N < a) N *= 2; return N / 2; }
        static public int Ceiling2(this int a) { int N = 1; while (N < a) N *= 2; return N; }
        static public long Ceiling2(this long a) { long N = 1; while (N < a) N *= 2; return N; }
        static public long[] CumSum(this long[] a) { var res = new long[a.Length]; long s = 0; for (int i = 0; i < a.Length; i++) res[i] = (s += a[i]); return res; }
        static public IEnumerable<int> PrimeFactors(this int n)
        {
            int tmp = n;
            for (int i = 2; i * i <= n; i++) while (tmp % i == 0) { tmp /= i; yield return i; }
            if (tmp != 1) yield return tmp;
        }
        static public IEnumerable<long> PrimeFactors(this long n)
        {
            var tmp = n;
            for (long i = 2; i * i <= n; i++) while (tmp % i == 0) { tmp /= i; yield return i; }
            if (tmp != 1) yield return tmp;
        }
        static public int Digit(this int n, int d) { if (d < 0) return 0; return (n % (int)Math.Pow(10, d + 1)) / (int)Math.Pow(10, d); }
        static public int Length(this int n) { if (n < 0) return 0; return (int)Math.Log10(n) + 1; }
        static public int Top(this int n) { return n.Digit(n.Length() - 1); }
        public static bool isPrime(this int p)
        {
            if (p <= 1) return false;
            for (int i = 2; i * i <= p; i++) if (p % i == 0) return false;
            return true;
        }
        public static bool isPrime(this long p)
        {
            if (p <= 1) return false;
            for (long i = 2; i * i <= p; i++) if (p % i == 0) return false;
            return true;
        }
        public static int GCD(int a, int b)
        {
            Func<int, int, int> gcd = null;
            gcd = (x, y) => y == 0 ? x : gcd(y, x % y);
            return a > b ? gcd(a, b) : gcd(b, a);
        }
        public static long GCD(long a, long b)
        {
            Func<long, long, long> gcd = null;
            gcd = (x, y) => y == 0 ? x : gcd(y, x % y);
            return a > b ? gcd(a, b) : gcd(b, a);
        }
        public static ulong extGCD(ulong a, ulong b, ref ulong x, ref ulong y)
        {
            if (b == 0) { x = 1; y = 0; return a; }
            var d = extGCD(b, a % b, ref y, ref x);
            y -= a / b * x;
            return d;
        }
        public static int LCM(int a, int b) { return a * b / GCD(a, b); }
        public static long LCM(long a, long b) { return a * b / GCD(a, b); }
        public static long Inv(this long a, long m = MOD)
        {
            long b = m, u = 1, v = 0;
            while (b != 0)
            {
                long t = a / b;
                a -= t * b;
                swap(ref a, ref b);
                u -= t * v;
                swap(ref u, ref v);
            }
            u %= m;
            if (u < 0) u += m;
            return u;
        }
        private static void swap(ref long a, ref long b) { var t = a; a = b; b = t; }
        public static long ModPow(long a, long n, long m = MOD)
        {
            long res = 1;
            while (n > 0)
            {
                if (n % 2 == 1) res = (res * a) % m;
                a = (a * a) % m;
                n >>= 1;
            }
            return res;
        }
    }

    static class MyLinq
    {
        public static void Sort(this string[] array) { Array.Sort(array, StringComparer.OrdinalIgnoreCase); }
        public static void StringSort(this List<string> list) { list.Sort(StringComparer.OrdinalIgnoreCase); }
        public static string Join<T>(this IEnumerable<T> source, string separator) { return string.Join(separator, source); }
        public static IEnumerable<TItem> Distinct<TItem, TKey>(this IEnumerable<TItem> source, Func<TItem, TKey> keySelector)
        {
            if (source == null)
                throw new ArgumentNullException(nameof(source));

            if (keySelector == null)
                throw new ArgumentNullException(nameof(keySelector));

            var set = new HashSet<TKey>();
            foreach (var item in source)
                if (set.Add(keySelector(item))) yield return item;
        }
    }
}