What is the string made of?

You are given a string, which contains entirely decimal digits (0-9). Each digit is made of a certain number of dashes, as shown in the image below. For instance, 1 is made of 2 dashes, 8 is made of 7 dashes, and so on.

You have to write a function that takes this string message as an input and returns a corresponding value in terms of a number. This number is the count of dashes in the string message.

Example:

Input:  s = "12134"
Output: 18

Approach

C++

#include <bits/stdc++.h>
using namespace std;
int main()
{
    map<char, int> mp;
    mp['1'] = 2;
    mp['2'] = 5;
    mp['3'] = 5;
    mp['4'] = 4;
    mp['5'] = 5;
    mp['6'] = 6;
    mp['7'] = 3;
    mp['8'] = 7;
    mp['9'] = 6;
    mp['0'] = 6;
    string s = "12134";
    int n = s.size();
    int ans = 0;
    for (int i = 0; i < n; i++)
        ans += mp[s[i]];
    cout << ans << "\n";
    return 0;
}