Money Coupon

#include<stdio.h>
typedef long long int ll;

int main()
{
    int n;
    scanf("%d",&n);
    ll ans = 0;
    ll multi = 1;
    ll minus = 0;
    bool check0 = false;
    for(int i = 0; i < n ; i ++){
        char c;
        scanf(" %c",&c);
        ll val;
        scanf("%lld",&val);
        if(c == '+'){
            ans += val;
        }
        else if(c == 'x'){
            if(val != 0){
                multi *= val;
            }
            else{
                check0 = true;
            }
        }
        else{
            minus += val;
        }
    }
    printf("%lld",(ans*(multi))-(check0 ? 0 : minus));
    return 0;
}