148A.cpp

// «One dragon. Two dragon. Three dragon», — the princess was counting. She had trouble 
// falling asleep, and she got bored of counting lambs when she was nine.

// However, just counting dragons was boring as well, so she entertained herself at best 
// she could. Tonight she imagined that all dragons were here to steal her, and she was 
// fighting them off. Every k-th dragon got punched in the face with a frying pan. Every 
// l-th dragon got his tail shut into the balcony door. Every m-th dragon got his paws 
// trampled with sharp heels. Finally, she threatened every n-th dragon to call her mom, 
// and he withdrew in panic.

// How many imaginary dragons suffered moral or physical damage tonight, if the princess 
// counted a total of d dragons?

// Input
// Input data contains integer numbers k, l, m, n and d, each number in a separate 
// line (1 ≤ k, l, m, n ≤ 10, 1 ≤ d ≤ 105).

// Output
// Output the number of damaged dragons.


#include<iostream>

int main(){
    int k,l,m,n,d;
    int cnt = 0;
    std::cin>>k;
    std::cin>>l;
    std::cin>>m;
    std::cin>>n;
    std::cin>>d;
    for(int i = 1;i<d+1;i++){
        if(i%k==0 || i%l==0 || i%m==0 || i%n==0){
            cnt++;
        }
    }
    std::cout<<cnt;
    return 0;
}