int howManyGames(int p, int d, int m, int s) {
    // Return the number of games you can buy
    vector <int> x;
    int sum=0;
    for(int i=p;sum<s;i-=d){
        if(i>=m){ 
            x.push_back(i);
        }else {
            x.push_back(m);
        }      
        sum=accumulate(x.begin(),x.end(),0);
    }
    if(sum>s){
        x.pop_back();
    }
    return x.size();
}