In progress?

Co-authored-by: sigonasr2 <sigonasr2@gmail.com>

main.cpp

@@ -1,14 +1,95 @@
 #define OLC_PGE_APPLICATION
 #include "pixelGameEngine.h"
 #include "olcutils.h"
-#include "BigInt.h"
+#include "InfInt.h"
 
 using namespace olc;
-// C++ program to implement
+
-// the above approach
+
+//Break down each number into its raw factors.
+//The number itself is also stored.
+//If the factorization is larger than 19, we can discard it. It shouldn't matter.
+
+std::vector<int>factor(int numb){
+    std::vector<int>factors;
+    while (numb>1){
+        for (int i=2;i<numb;i++){
+            if (numb%i==0){
+                factors.push_back(i);
+                numb/=i;
+                goto next;
+            }
+        }
+        factors.push_back(numb);
+        numb/=numb;
+        next:;
+    }
+    factors.push_back(1);
+    return factors;
+}
+
+struct factorNumber{
+    void SetupOffsets(){
+        offsets.push_back({23,0});
+        offsets.push_back({19,0});
+        offsets.push_back({13,0});
+        offsets.push_back({17,0});
+    }
+    std::vector<int>factors;
+    std::vector<std::pair<int,int>>offsets;
+    factorNumber(int numb){
+        SetupOffsets();
+    }
+    factorNumber&operator=(int numb){
+        factors.clear();
+        offsets.clear();
+        SetupOffsets();
+        factors=factor(numb);
+        return*this;
+    }
+    factorNumber&operator+=(int numb){
+        for (int i=0;i<offsets.size();i++){
+            std::pair<int,int>&offset=offsets[i];
+            offset.second=(offset.second+numb)%offset.first;
+        }
+        return*this;
+    }
+    factorNumber&operator*=(int numb){
+        std::vector<int>factors=factor(numb);
+        for (int i=0;i<factors.size();i++){
+            for (int j=0;j<this->factors.size();j++){
+                if (this->factors[j]==factors[i]){
+                    goto gonext;
+                }
+            }
+            this->factors.push_back(factors[i]);
+            gonext:;
+        }
+        return*this;
+    }
+    int operator%(int numb){
+        for (int i=0;i<offsets.size();i++){
+            if (offsets[i].first==numb){
+                if (offsets[i].second==0) {
+                    for (int j=0;j<factors.size();j++){
+                        if (factors[j]==numb){
+                            return 0;
+                        }
+                    }
+                    //std::cout<<"Not divisible!"<<std::endl;
+                    return -1;
+                } else {
+                    return offsets[i].second;
+                }
+            }
+        }
+        std::cout<<"No divisibility information for modulus "<<numb<<" !! THIS SHOULDN'T BE HAPPENING !!"<<std::endl;
+        return -1; //This shouldn't happen??
+    }
+};
 
 struct Monkey{
-    std::vector<BigInt> items;
+    std::vector<factorNumber> items;
     char operation;
     int operation_amt;
     int divisible;
@@ -22,22 +103,26 @@ int main()
     std::vector<Monkey> monkeys;
 	std::ifstream file("input");
 
-    monkeys.push_back({{89,95,92,64,87,68},'*',11,2,7,4});
+    /*monkeys.push_back({{89,95,92,64,87,68},'*',11,2,7,4});
     monkeys.push_back({{87,67},'+',1,13,3,6});
     monkeys.push_back({{95, 79, 92, 82, 60},'+',6,3,1,6});
     monkeys.push_back({{67, 97, 56},'*',-1,17,7,0});
     monkeys.push_back({{80, 68, 87, 94, 61, 59, 50, 68},'*',7,19,5,2});
     monkeys.push_back({{73, 51, 76, 59},'+',8,7,2,1});
     monkeys.push_back({{92},'+',5,11,3,0});
-    monkeys.push_back({{99, 76, 78, 76, 79, 90, 89},'+',7,5,4,5});
+    monkeys.push_back({{99, 76, 78, 76, 79, 90, 89},'+',7,5,4,5});*/
+    monkeys.push_back({{79,98},'*',19,23,2,3});
+    monkeys.push_back({{54, 65, 75, 74},'+',6,19,2,0});
+    monkeys.push_back({{79, 60, 97},'*',-1,13,1,3});
+    monkeys.push_back({{74},'+',3,17,0,1});
 
     for (int round=0;round<10000;round++){
         for (int i=0;i<monkeys.size();i++){
             Monkey&m=monkeys[i];
             m.inspAmt+=m.items.size();
             for (int j=0;j<m.items.size();j++){
-                BigInt worryLevel=m.items[j];
+                factorNumber worryLevel=m.items[j];
-                std::cout<<worryLevel<<std::endl;
+                //std::cout<<worryLevel<<std::endl;
                 if (m.operation=='+'){
                     if (m.operation_amt!=-1){
                         worryLevel+=m.operation_amt;
@@ -47,13 +132,9 @@ int main()
                 } else {
                     if (m.operation_amt!=-1){
                         worryLevel*=m.operation_amt;
-                    } else {
-                        worryLevel*=worryLevel;
                     }
                 }
-                //worryLevel/=3;
+                if (worryLevel%m.divisible==0){
-                BigInt zero{"0"};
-                if (worryLevel%m.divisible==zero){
                     Monkey&newMonkey=monkeys[m.trueThrow];
                     newMonkey.items.push_back(worryLevel);
                     m.items.erase(m.items.begin());
@@ -66,6 +147,13 @@ int main()
                 }
             }
         }
+        if (round==19||round==0||(round+1)%1000==0){
+            std::cout<<"Round "<<(round+1)<<"..."<<std::endl;
+            for (int i=0;i<monkeys.size();i++){
+                Monkey&m=monkeys[i];
+                std::cout<<"  Monkey "<<i<<": "<<m.inspAmt<<" inspected"<<std::endl;
+            }
+        }
     }
 
     std::sort(monkeys.begin(),monkeys.end(),[](Monkey&first,Monkey&second){return second.inspAmt<first.inspAmt;});
@@ -74,7 +162,7 @@ int main()
         std::cout<<"Monkey "<<i<<": "<<m.inspAmt<<" inspections"<<std::endl;
     }
 
-    std::cout<<(monkeys[0].inspAmt*monkeys[1].inspAmt)<<std::endl;
+    std::cout<<((long)monkeys[0].inspAmt*(long)monkeys[1].inspAmt)<<std::endl;
 
 	return 0;
 }

testInput

@@ -0,0 +1,27 @@
+Monkey 0:
+  Starting items: 79, 98
+  Operation: new = old * 19
+  Test: divisible by 23
+    If true: throw to monkey 2
+    If false: throw to monkey 3
+
+Monkey 1:
+  Starting items: 54, 65, 75, 74
+  Operation: new = old + 6
+  Test: divisible by 19
+    If true: throw to monkey 2
+    If false: throw to monkey 0
+
+Monkey 2:
+  Starting items: 79, 60, 97
+  Operation: new = old * old
+  Test: divisible by 13
+    If true: throw to monkey 1
+    If false: throw to monkey 3
+
+Monkey 3:
+  Starting items: 74
+  Operation: new = old + 3
+  Test: divisible by 17
+    If true: throw to monkey 0
+    If false: throw to monkey 1