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Cod sursa(job #856129)
#include <fstream>
#include <cstring>
using namespace std;
int s[105];char nr[105];
int main(){
fstream f("cifra.in",ios::in);
fstream g("cifra.out",ios::out);
int t,i,j,x,y=0,rez;
for(i=1;i<=100;i++) {
x=1;
for(j=1;j<=i;j++) {
x*=i;
x%=10;
}
y=(y+x)%10;
s[i]=y;
}
f>>t;
for(i=1;i<=t;i++) {
f>>nr;
if(strlen(nr)>=2) {
rez=(nr[strlen(nr)-2]-'0')*10+nr[strlen(nr)-1]-'0';}
else
rez=nr[strlen(nr)-1]-'0';
g<<s[rez]<<'\n';
}
}