#include<bits/stdc++.h>
#define ll long long int
using namespace std;
ll other_deci(string s, int b)
{
if(s == "0")
return 0;
ll r = s[0] - '0';
for(int i=1; i<s.size(); i++)
r = (r*b)+(s[i]-'0');
return r;
}
string deci_other(ll n, int b)
{
string s = "";
while(n > 0)
{
int r = n%b;
s = s + to_string(r);
n = n/b;
}
reverse(s.begin(), s.end());
return s;
}
int main()
{
int n;
string num, m;
while(cin >> n && n > 0)
{
cin >> num >> m;
ll r1 = other_deci(m, n);
ll r = num[0] - '0';
for(int i=1; i<num.size(); i++)
{
r = (r*n) + (num[i]-'0');
r = r%r1;
}
string s = deci_other(r, n);
if(s == "")
cout << 0 << "\n";
else
cout << s << "\n";
}
return 0;
}
#define ll long long int
using namespace std;
ll other_deci(string s, int b)
{
if(s == "0")
return 0;
ll r = s[0] - '0';
for(int i=1; i<s.size(); i++)
r = (r*b)+(s[i]-'0');
return r;
}
string deci_other(ll n, int b)
{
string s = "";
while(n > 0)
{
int r = n%b;
s = s + to_string(r);
n = n/b;
}
reverse(s.begin(), s.end());
return s;
}
int main()
{
int n;
string num, m;
while(cin >> n && n > 0)
{
cin >> num >> m;
ll r1 = other_deci(m, n);
ll r = num[0] - '0';
for(int i=1; i<num.size(); i++)
{
r = (r*n) + (num[i]-'0');
r = r%r1;
}
string s = deci_other(r, n);
if(s == "")
cout << 0 << "\n";
else
cout << s << "\n";
}
return 0;
}
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