Accepted solution

431A - Black Square

Open original problem
Source code

#include<bits/stdc++.h>

using namespace std;

int main()

{

    int arr[4],cal=0;

    string s;

    for(int i=0; i<4; i++)

    {

        cin>>arr[i];

    }

    cin>>s;

    for(int i=0; i<s.size(); i++)

    {

        int a=s[i]-'0';

        cal+= arr[a-1];

    }

    cout<<cal<<endl;

}
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