bruteforce forever

day6/second.cpp

@@ -1,5 +1,6 @@
 #include <fstream>
 #include <iostream>
+#include <ostream>
 #include <vector>
 
 bool AreWeInBounds(int x, int y, std::vector<std::vector<char>> &map) {
@@ -23,80 +24,17 @@ int conditional_operation(int a, int b, char op) {
   }
 }
 
-int main() {
+bool WillHeGetStuck(int posX, int posY, int direction, int locX, int locY,
-  std::ifstream inputfile("example");
+                    std::vector<std::vector<char>> map) {
-  std::string input;
-
-  int res = 0;
-  if (!inputfile.is_open()) {
-    std::cerr << "Could not open the file" << std::endl;
-    return ENOENT;
-  }
-  std::string line;
-  std::vector<std::vector<char>> map;
-
-  while (std::getline(inputfile, line)) {
-    map.push_back(std::vector<char>(line.begin(), line.end()));
-  }
-  int posX_orig;
-  int posY_orig;
-  int direction;
-  /*
-    0: up
-    1: right
-    2: down
-    3: left
-  */
-
-  for (int i = 0; i < map.size(); i++) {
-    for (int j = 0; j < map[i].size(); j++) {
-      if (map[i][j] == '^') {
-        posX_orig = i;
-        posY_orig = j;
-        direction = 0;
-      }
-    }
-  }
   char op_x;
   char op_y;
-  std::vector<std::vector<char>> mapTmp;
+  map[locX][locY] = '#';
-  std::vector<std::vector<char>> mapRes = map;
+  int conter = 0;
-  int posX;
-  int posY;
-  int counter;
-
-  for (int i = 0; i < map.size(); i++) {
-    for (int j = 0; j < map[i].size(); j++) {
-      if (map[i][j] == '^' || map[i][j] == '#') {
-        continue;
-      }
-
-      mapTmp.clear();
-      mapTmp = map;
-      mapTmp[i][j] = 'O';
-      posX = posX_orig;
-      posY = posY_orig;
-      counter = 0;
-
-      std::cout << "checking: " << i << " " << j << std::endl;
-      for (int i = 0; i < mapTmp.size(); i++) {
-        for (int j = 0; j < mapTmp[i].size(); j++) {
-          std::cout << mapTmp[i][j];
-        }
-        std::cout << "\n\n";
-      }
-
   while (true) {
-        if (mapTmp[posX][posY] == 'X') {
+    map[posX][posY] = 'X';
-          counter++;
+    conter++;
-        } else {
+    if (conter > 10000) {
-          mapTmp[posX][posY] = 'X';
+      return true;
-          counter = 0;
-        }
-        if (counter > 200) {
-          res++;
-          mapRes[i][j] = 'O';
-          break;
     }
 
     switch (direction) {
@@ -122,11 +60,11 @@ int main() {
       break;
     }
     if (!AreWeInBounds(conditional_operation(posX, 1, op_x),
-                           conditional_operation(posY, 1, op_y), mapTmp)) {
+                       conditional_operation(posY, 1, op_y), map)) {
       break;
     }
 
-        switch (mapTmp[conditional_operation(posX, 1, op_x)]
+    switch (map[conditional_operation(posX, 1, op_x)]
                [conditional_operation(posY, 1, op_y)]) {
     case '#':
       direction++;
@@ -134,25 +72,60 @@ int main() {
         direction = 0;
       }
       break;
-        case 'O':
-          direction++;
-          if (direction > 3) {
-            direction = 0;
-          }
-          break;
     default:
       posX = conditional_operation(posX, 1, op_x);
       posY = conditional_operation(posY, 1, op_y);
     }
   }
+  return false;
+}
+
+int main() {
+  std::ifstream inputfile("input");
+  std::string input;
+
+  int res = 0;
+  if (!inputfile.is_open()) {
+    std::cerr << "Could not open the file" << std::endl;
+    return ENOENT;
+  }
+  std::string line;
+  std::vector<std::vector<char>> map;
+
+  while (std::getline(inputfile, line)) {
+    map.push_back(std::vector<char>(line.begin(), line.end()));
+  }
+  int posX;
+  int posY;
+  int direction;
+  /*
+    0: up
+    1: right
+    2: down
+    3: left
+  */
+
+  for (int i = 0; i < map.size(); i++) {
+    for (int j = 0; j < map[i].size(); j++) {
+      if (map[i][j] == '^') {
+        posX = i;
+        posY = j;
+        direction = 0;
+      }
     }
   }
 
-  for (int i = 0; i < mapRes.size(); i++) {
+  for (int i = 0; i < map.size(); i++) {
-    for (int j = 0; j < mapRes[i].size(); j++) {
+    for (int j = 0; j < map[i].size(); j++) {
-      std::cout << mapRes[i][j];
+      if (map[i][j] == '^' || map[i][j] == '#') {
+        continue;
+      } else {
+        if (WillHeGetStuck(posX, posY, direction, i, j, map)) {
+          res++;
         }
-    std::cout << std::endl;
       }
+    }
+  }
+
   std::cout << "\nRes: " << res << std::endl;
 }