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Cod sursa(job #673349)
#include<fstream>
#include<iostream>
#include<cstring>
using namespace std;
int t, i;
char n[101];
ifstream f("cifra.in");
ofstream g("cifra.out");
int getval(int x)
{if(x==1)
return 1;
if(x==2)
return 4;
if(x==3)
return 7;
if(x==4)
return 6;
if(x==5)
return 5;
if(x==6)
return 6;
if(x==7)
return 3;
if(x==8)
return 6;
if(x==9)
return 9;
if(x==0)
return 0;
}
int getval2(int x)
{if(x==1)
return 1;
if(x==2)
return 6;
if(x==3)
return 3;
if(x==4)
return 6;
if(x==5)
return 5;
if(x==6)
return 6;
if(x==7)
return 7;
if(x==8)
return 4;
if(x==9)
return 9;
if(x==0)
return 0;
}
int parse()
{int j, l, x, s;
l=strlen(n);
if(l==1)
{x=atoi(n[0]);
return getval(x);
}
else
{x=atoi(n[l-2]);
s=(7*x)%10;
if(x%2==0)
s+= getval(x);
else
s+= getval2(x);
return=s%10;
}
}
int main()
{f>>t;
for(i=1;i<=t;i++)
{f>>n;
g<<parse()<<endl;
}
f.close();
g.close();
return 0;
}