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Cod sursa(job #562874)
#include <fstream>
using namespace std;
ifstream f("cifra.in");
ofstream g("cifra.out");
unsigned long long u=0,i,j,n,p;
int put(int k)
{
unsigned long long h,ul=1;
for(h=1;h<=k;h++)
{
ul=ul*k;
ul=ul%10;
}
return ul;
}
int main()
{
f>>n;
for(i=1;i<=n;i++)
{
f>>p;
p=p%100;
u=0;
for(j=1;j<=p;j++)
{
u+=put(j);
u=u%10;
}
g<<u<<"\n";
}
return 0;
}