Problem:
Score : 400 points

Problem Statement

You have a sequence A composed of N positive integers: A_{1}, A_{2}, \cdots, A_{N}.

You will now successively do the following Q operations:

In the i-th operation, you replace every element whose value is B_{i} with C_{i}.

For each i (1 \leq i \leq Q), find S_{i}: the sum of all elements in A just after the i-th operation.

Constraints

All values in input are integers.

1 \leq N, Q, A_{i}, B_{i}, C_{i} \leq 10^{5}

B_{i} \neq C_{i}

Input

Input is given from Standard Input in the following format:

N
A_{1} A_{2} \cdots A_{N}
Q
B_{1} C_{1}
B_{2} C_{2}
\vdots
B_{Q} C_{Q}

Output

Print Q integers S_{i} to Standard Output in the following format:

S_{1}
S_{2}
\vdots
S_{Q}

Note that S_{i} may not fit into a 32-bit integer.

Sample Input 1

4
1 2 3 4
3
1 2
3 4
2 4

Sample Output 1

11
12
16

Initially, the sequence A is 1,2,3,4.

After each operation, it becomes the following:

2, 2, 3, 4

2, 2, 4, 4

4, 4, 4, 4

Sample Input 2

4
1 1 1 1
3
1 2
2 1
3 5

Sample Output 2

8
4
4

Note that the sequence A may not contain an element whose value is B_{i}.

Sample Input 3

2
1 2
3
1 100
2 100
100 1000

Sample Output 3

102
200
2000

Solution in C# (.NET Core 3.1.201) (judge verdict: Wrong Answer)

using System;
using System.Collections.Generic;
using System.IO;
using System.Linq;
using static System.Console;

namespace ABC171
{
    internal class Program
    {
        public static void Main(string[] args)
        {
            var sw = new StreamWriter(OpenStandardOutput()) {AutoFlush = false};
            SetOut(sw);
            SolveD();
            Out.Flush();
        }


        static void SolveD()
        {
            ReadLine();
            var aList = ReadLine().Split(' ').Select(int.Parse);
            var aDic = new Dictionary<int, int>();
            foreach (var a in aList)
            {
                if (!aDic.ContainsKey(a))
                {
                    aDic.Add(a, 1);
                }
                else
                {
                    aDic[a]++;
                }
            }

            var q = int.Parse(ReadLine());
            for (var i = 0; i < q; i++)
            {
                var bc = ReadLine().Split(' ').Select(int.Parse);
                if (aDic.ContainsKey(bc.First()))
                {
                    var tmp = aDic[bc.First()];
                    aDic.Remove(bc.First());
                    if (!aDic.ContainsKey(bc.Last()))
                    {
                        aDic.Add(bc.Last(), tmp);
                    }
                    else
                    {
                        aDic[bc.Last()]+=tmp;
                    }
                }


                var sum = 0;
                foreach (var a in aDic)
                {
                    sum += a.Key * a.Value;
                }
                WriteLine(sum);
            }
        }
    }
}