diff --git a/4_2/main.c b/4_2/main.c
index ba9f621..57229db 100644
--- a/4_2/main.c
+++ b/4_2/main.c
@@ -28,14 +28,16 @@ uint64_t power(uint64_t base, uint64_t exp) {
 void print_field(uint8_t* surrounds){
     for(int x = 0; x < height; x++){
         for(int y = 0; y < width; y++){
-            if(/*surrounds[(x)*(width+2)+(y)] < 4 &&*/ input[(x)*(width+1)+(y)] == '@'){
-                printf("%d", surrounds[(x)*(width+2)+(y)]);
+            if((surrounds[(x)*(width+2)+(y)]&0x80) == 0x80){
+                printf("%d", surrounds[(x)*(width+2)+(y)]-0x80);
             }else{
-                printf("%c", input[(x)*(width+1)+(y)]);
+                //printf("%c", input[(x)*(width+1)+(y)]);
+                printf(".");
             }
         }
         printf("\n");
     }
+    printf("==============================================\n");
 }
 
 int main(int argc, char *argv[]){
@@ -62,7 +64,7 @@ int main(int argc, char *argv[]){
                     surrounds[(x-1)*(width+2)+(y)]      += 1;
                     surrounds[(x-1)*(width+2)+(y+1)]    += 1;
                     surrounds[(x)*(width+2)+(y-1)]      += 1;
-                    surrounds[(x)*(width+2)+(y)]        += 0;
+                    surrounds[(x)*(width+2)+(y)]        += 0x80;
                     surrounds[(x)*(width+2)+(y+1)]      += 1;
                     surrounds[(x+1)*(width+2)+(y-1)]    += 1;
                     surrounds[(x+1)*(width+2)+(y)]      += 1;
@@ -76,58 +78,63 @@ int main(int argc, char *argv[]){
         }
         //printf("\n");
     }
+    //print_field(surrounds);
     
     uint64_t count = 0;
     uint64_t count_2 = 0;
     bool cont = true;
+    int* removes = calloc((height)*(width)*2, sizeof(int));
+
     while (cont){
         count_2 = 0;
         for(int x = 0; x < height; x++){
             for(int y = 0; y < width; y++){
-                if(surrounds[(x)*(width+2)+(y)] < 4 && input[(x)*(width+1)+(y)] == '@'){
+                if((surrounds[(x)*(width+2)+(y)]&0x7f) < 4 && (surrounds[(x)*(width+2)+(y)]&0x80) == 0x80){
+                    
+                    removes[count_2*2] = x;
+                    removes[count_2*2+1] = y;
                     count_2++;
-                    input[(x)*(width+1)+(y)] = 'x';
+                    //printf("removing %d, %d\n", x, y);
+                    //input[(x)*(width+1)+(y)] = 'x';
                     //printf("%d", surrounds[(x)*width+(y)]);
-                }else{
-                    //printf("%c", input[(x)*width+(y)]);
-                }
+                }//if((surrounds[(x)*(width+2)+(y)]&0x7f) > 8 && (surrounds[(x)*(width+2)+(y)]&0x80) == 0x80){
+                    //printf("underflow detechted, aborting\n");
+                    //cont = false;
+                //}
             }
             //printf("\n");
         }
         //print_field(surrounds);
         count += count_2;
+        
+        //printf("count = %lu\n========\n", count);
         if(count_2 == 0){
             cont = false;
         }
         //printf("cont: %s\n", cont ? "true" : "false");
         //printf("count_2 = %lu\n", count_2);
         //printf("count = %lu\n", count);
-        for(int x = 0; x < height; x++){
-            for(int y = 0; y < width; y++){
-                if(input[(x)*(width+1)+(y)] == 'x'){
-                    surrounds[(x-1)*(width+2)+(y-1)]    -= 1;
-                    surrounds[(x-1)*(width+2)+(y)]      -= 1;
-                    surrounds[(x-1)*(width+2)+(y+1)]    -= 1;
-                    surrounds[(x)*(width+2)+(y-1)]      -= 1;
-                    surrounds[(x)*(width+2)+(y)]        -= 0;
-                    surrounds[(x)*(width+2)+(y+1)]      -= 1;
-                    surrounds[(x+1)*(width+2)+(y-1)]    -= 1;
-                    surrounds[(x+1)*(width+2)+(y)]      -= 1;
-                    surrounds[(x+1)*(width+2)+(y+1)]    -= 1;
-                    input[(x)*(width+1)+(y)] = '.';
-                    //printf("%d", surrounds[(x)*width+(y)]);
-                }else{
-                    //printf("%c", input[(x)*width+(y)]);
-                }
-            }
-            //printf("\n");
+
+
+        for(int i = 0; i < count_2; i++){
+            int x = removes[i*2];
+            int y = removes[i*2+1];
+            surrounds[(x-1)*(width+2)+(y-1)]    -= 1;
+            surrounds[(x-1)*(width+2)+(y)]      -= 1;
+            surrounds[(x-1)*(width+2)+(y+1)]    -= 1;
+            surrounds[(x)*(width+2)+(y-1)]      -= 1;
+            surrounds[(x)*(width+2)+(y)]        -= 0x80;
+            surrounds[(x)*(width+2)+(y+1)]      -= 1;
+            surrounds[(x+1)*(width+2)+(y-1)]    -= 1;
+            surrounds[(x+1)*(width+2)+(y)]      -= 1;
+            surrounds[(x+1)*(width+2)+(y+1)]    -= 1;
         }
         //print_field(surrounds);
         //sleep(1);
     }
 
-
-    free(surrounds-width-1);
+    //free(removes);
+    //free(surrounds-width-1);
 
     end = clock();
     printf("count: %lu\n", count);