#include <bits/stdc++.h>
#define rep(i, n) for(int i= 0; i < (n); i++)
using ll= long long int;
using namespace std;
template<class T> inline bool chmax(T& a, T b) { if (a < b) { a = b; return 1; } return 0; }
template<class T> inline bool chmin(T& a, T b) { if (a > b) { a = b; return 1; } return 0; }
ll mod= 1e9 + 7;

ll RepeatSquaring(ll N, ll P, ll M){
    if(P==0) return 1;
    if(P%2==0){
        ll t = RepeatSquaring(N, P/2, M);
        return t*t % M;
    }
    return N * RepeatSquaring(N, P-1, M)%M;
}

int main(){
  ll p,n;
  cin >> p >> n;
  ll a[n];
  rep(i,n)cin >> a[i];
  ll ans=a[0];

  for(int i=1;i<n;i++){
    char g;
    cin >> g;
    if(g=='+'){ans+=a[i];}
    else if(g=='-'){ans-=a[i];}
    else if(g=='*'){ans*=(a[i]%p);}
    else if(g=='/'){ans*=RepeatSquaring(a[i],p-2,p);}

    ans%=p;
    while(ans<0)ans+=p;
  }

  cout << ans << endl;
}