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Cod sursa(job #864371)
#include <fstream>
#include <cstring>
#include <cmath>
using namespace std;
ifstream f("cifra.in");
ofstream g("cifra.out");
int n,i,j;
long long s,c[300];
struct a
{
char a[300];
} b[300];
int main()
{
f>>n;
f.get();
i=0;
while (f.getline(b[i].a,300)) i++;
int j=0,k;
for (i=0;i<n;i++)
{
k=strlen(b[i].a);
j=0;
while (k!=0) {c[i]+= ((int(b[i].a[j]) ) - 48) * pow(10,k-1);k--;j++; } }
for (i=0;i<n;i++)
{
s=0;
{
for (j=1;j<=c[i];j++)
s=s+ pow (j,j);
}
g<<s%10<<endl;
}
return 0;
}