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Cod sursa(job #860621)
#include <fstream>
#include <iostream>
#include <cstring>
#include <cstdlib>
using namespace std;
fstream f("cifra.in", ios::in), g("cifra.out", ios::out);
void construct(int[]);
int main()
{
int v[102],n,lung;
char ch[104]="" ,ch2[3]="";
f>>n;
construct(v);
f.getline(ch,105);
for(int i=1;i<=n;i++)
{
f.getline(ch,105);
lung=strlen(ch);
if(lung<=2)
g<<v[atoi(ch)]<<endl;
else
{
ch2[0]=ch[lung-2];
ch2[1]=ch[lung-1];
g<<v[atoi(ch2)]<<endl;
}
}
return 0;
}
void construct(int v[])
{
int x,y=0;
for(int i=1;i<=100;i++)
{
x=i;
for(int j=1;j<i;j++)
x=(x*i)%10;
y=(x+y)%10;
v[i]=y;
}
}