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Cod sursa(job #500063)
#include<iostream.h>
#include<fstream.h>
#include<math.h>
long n,t,a[100],i,p,b[100],c,s,r;
long q(long x){long s=0,i,r=0,z=0;
for(i=1;i<=x;i++){z=i;
z=z%4;
if(i>=10)
r=pow(i%10,z);
else r=pow(i,i);
s=s+(r%10);}
return s%10;}
int main(){
ifstream f("cifra.in");
ofstream g("cifra.out");
f>>t;
for(i=1;i<=t;i++)f>>a[i];
for(i=1;i<=t;i++){
g<<q(a[i]);
g<<endl;}
}