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Cod sursa(job #879521)
#include<fstream>
#include<cstdlib>
#include<cstring>
using namespace std;
int ultim(int x)
{
int i,j,p,s=0;
for(i=1;i<=x;i++)
{
p=1;
for(j=1;j<=i;j++)
p=(p*i)%10;
s=(s+p)%10;
}
return s;
}
int main()
{int i,n,v[101],x,y;
long long p;
char s[101];
ifstream f("cifrain.txt");
ofstream g("cifraout.txt");
f>>n;
for(i=1;i<=100;i++)
v[i]=ultim(i);
for(i=1;i<=n;i++)
{
f>>s;
x=strlen(s);
if(x>2)
{p=atoi(s);
y=p%100;
g<<v[y]<<'\n';}
else g<<v[atoi(s)]<<'\n';
}
}