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#include<iostream>
#include<string>
using namespace std;
void mcnuggets(int n,int *value1,int *value2);
void meal(int n,char a);
void single(int n,char a);
int main(){
//size_o = original size, size_m = size for meal, size_a = size for A la carte
int input[9],size_o[10],size_m[10],size_a[10],count(0),count2(0),c,f;
// o_letter = original letter, e_letter = extracted letter
char o_letter[10]={'a','A','b','c','d','e','f','g','h','i'},e_letter[10];
bool zero(1),stop(0);
fill_n(size_m,10,0);
string output;
cout<<"Welcome to McDonald's HK, what would you like to order?";
cout<<"(A)How many of Chicken McNuggets(s) you want to order(at least 4)? ";cin>>input[0];
cout<<"(B)How many set of McWings(s) you want to order? ";cin>>input[1];
cout<<"(C)How many of McSpicy Chicken Filet(s) you want to order? ";cin>>input[2];
cout<<"(D)How many of Sausage McMuffin with Egg(s) you want to order? ";cin>>input[3];
cout<<"(E)How many of Filet - O - Fish(s) you want to order? ";cin>>input[4];
cout<<"(F)How many of (small) Soft Drink(s) you want to order? ";cin>>input[5];
cout<<"(G)How many of (small) Fries(s) you want to order? ";cin>>input[6];
cout<<"(H)How many of Apple Pie(s) you want to order? ";cin>>input[7];
cout<<"(I)How many of Ice - cream(s) you want to order? ";cin>>input[8];
// check if order is placed
for(int i=0;i<=9;i++){
if(input[i]!=0) zero=0;
}
if(zero) cout<<"No order placed !"<<endl;
else{
if(input[0]==4 || (input[0]>=6 && (input[0]%3==0 || (input[0]-4)%3==0) ) ){
if((input[0]-4)%3==0) input[0]-=4;
if(input[0]!=4) mcnuggets(input[0],&size_o[0],&size_o[1]);
}
else {cout<<"No solution !"<<endl; stop=1;}
//to check if nuggets of 6 or 9 contains value and store the letter
if(!stop){
for(int i=0;i<=1;i++){
if(size_o[i]!=0){
e_letter[count]=o_letter[i];
count++;
}}
//extract the products which contains data
for(int i=1;i<=9;i++){
if(input[i]>0){
size_o[count]=input[i];
size_a[count]=size_o[count];
e_letter[count]=o_letter[i+1];
//if(i==5)c=count; if(i==6)f=count;
count++;
}}
//calculate size for meal
if(input[5]>=2 && input[6]>=2){
c=input[5];f=input[6];
for(int i=0;i<=count,c>=2 && f>=2;i++){
if(o_letter[i]!='f' && o_letter[i]!='g'&& o_letter[i]!='h'&& o_letter[i]!='i'){
size_m[i]=min(size_m[i],c/2,f/2);
size_a[i]-=size_m[i];
count2++;
c-=2;f-=2;
}
}
//output the plans
for(int i=0;i<=count;i++){
if(size_m[i]!=0){
meal(size_m[i],e_letter[i]);
if(i!=count)cout<<"+";}
}
for(int i=0;i<=count;i++){
if(size_a[i]!=0){
single(size_a[i],e_letter[i]);
if(i!=count)cout<<"+";}
}
}
}
}
return 0;
}
//functions
//calculate the combinations of mcnuggets
void mcnuggets(int n,int *value1,int *value2){
bool stop(0);
for(int i=0;i<=n/6;i++){
if (stop)break;
for(int x=0;x<=n/6;x++){ //n/6 is the largest posible no. of meals or A la carte
if(n-i*6-x*9==0){
*value1=i;
*value2=x;
stop=1;
break;
}
}
}
}
void meal(int n,char a){
switch(a){
case 'a':cout<<n<<" x M1 ($22.00)";break;
case 'A':cout<<n<<" x M2 ($35.50)";break;
case 'b':cout<<n<<" x M3 ($36.80)";break;
case 'c':cout<<n<<" x M4 ($22.00)";break;
case 'd':cout<<n<<" x M5 ($29.5)";break;
case 'e':cout<<n<<" x M6 ($33.00)";break;
}
}
void single(int n,char a){
switch(a){
case 'a':cout<<n<<" x A1 ($17.50)";break;
case 'A':cout<<n<<" x A2 ($35.50)";break;
case 'b':cout<<n<<" x A3 ($20.60)";break;
case 'c':cout<<n<<" x A4 ($20.50)";break;
case 'd':cout<<n<<" x A5 ($9.00)";break;
case 'e':cout<<n<<" x A6 ($10.00)";break;
case 'f':cout<<n<<" x V1 ($5.00)";break;
case 'g':cout<<n<<" x V2 ($5.00)";break;
case 'h':cout<<n<<" x V3 ($5.00)";break;
case 'i':cout<<n<<" x V4 ($5.00)";break;
}
}
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