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Cod sursa(job #581842)
#include<iostream>
#include<fstream>
#include<string.h>
#include<stdlib.h>
#include<math.h>
using namespace std;
ifstream in("cifra.in");
ofstream out("cifra.out");
string s,t;
long long a,b=0,i,n,m,t1;
int main()
{
getline(in,t);
t1=atoi(t.c_str());
for (int k=1;k<=t1;++k)
{
getline(in,s);
m=s.length();
a=atoi(s.substr(m-1,1).c_str());
for (i=1;i<=a;++i)
b=b+pow(i,i);
out<<b%10<<'\n';
b=0;
}
return 0;
}