This submission is migrated from previous version of oj.uz, which used different machine for grading. This submission may have different result if resubmitted.
using namespace std;
#include <bits/stdc++.h>
int main(){
    int N;
    cin>>N;
    int A[N+1],B[N+1];
    for(int i=1;i<=N;i++){
        cin>>A[i];
    }
    for(int i=1;i<=N;i++){
        cin>>B[i];
    }
    int length=0;
    for(int i=1;i<=N;i++){
        for(int j=1;j<=N;j++){
            int C=A[i]+B[j];
            string S=to_string(C);
            length+=S.length();
        }
    }
    cout<<length;
}
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