#include<bits/stdc++.h>
#define ll long long
#define N ((int)6e4 + 5)
#define MOD ((int)1e9 + 7)
#define MAX ((int)1e9 + 7)
#define MAXL ((ll)1e18 + 7)
#define MAXP ((int)1e3 + 7)
#define thr 1e-8
#define pi acos(-1)  /// pi = acos ( -1 )
#define fastio ios_base::sync_with_stdio(false),cin.tie(NULL)
#define endl "\n"

using namespace std;




int power(int a , int p , int b) /// returns (a ^ p) % b
{
    if(b == 1) return 0;
    int res = 1;
    for(int i = 0 ; i < p ; i++){
        res = 1LL * res * a % b;
    }
    return res;
}

int solve()
{
    string a ;
    int b;
    cin>>a>>b;
    b = abs(b);
    reverse(a.begin() , a.end());
    if(a.back() == '+' || a.back() == '-') a.pop_back();
    int res = 0;
    for(int i = 0 ; i < a.size() ; i++){
        int digit = str[i] - '0';
        int mod = 1LL * digit * power(10 , i , b) % b;
        res = (res + mod) % b;
    }
    return res;
}

int main()
{
    cout<<solve();
}