diff --git a/global.h b/global.h
new file mode 100644
index 0000000..713c4cd
--- /dev/null
+++ b/global.h
@@ -0,0 +1,24 @@
+#include <unistd.h>
+#include <stdio.h>
+#include <fcntl.h>
+
+solver (char *str);
+writer (buf);
+putchar (char c);
+
+char	space;
+char	obstacle;
+char	filler;
+int	root;
+
+int	x;
+int	y;
+
+int	top;
+int	left;
+int	tolef;
+
+int	sq_sz;
+int	sq_posx;
+int	sq_posy;
+	
\ No newline at end of file
diff --git a/output.c b/output.c
new file mode 100644
index 0000000..e69e1e2
--- /dev/null
+++ b/output.c
@@ -0,0 +1,28 @@
+#include "global.h"
+
+void writer (char *str)
+{
+	int	cou;
+	int	trig;
+	
+	cou = 0;
+	trig = 0;
+	while (str[cou])
+	{
+		if (cou >= ((root * y) + (x + y)) && trig != 1)
+		{
+			putchar (filler);
+			if (((root * y) + (x + y) + sq_sz) < cou) 
+				trig = 1;
+		}
+		else
+		{
+			putchar (str[cou]); 
+			if (str[cou] == '\n' && trig == 1)
+			{
+				y++;
+				trig = 0;
+			}
+		}	
+	}
+}
\ No newline at end of file
diff --git a/putchar.c b/putchar.c
new file mode 100644
index 0000000..457b7a3
--- /dev/null
+++ b/putchar.c
@@ -0,0 +1,6 @@
+#include <unistd,h>
+
+void putchar (char c)
+{
+	write (1, &c, 1);
+}
\ No newline at end of file
diff --git a/solver.c b/solver.c
new file mode 100644
index 0000000..2f9d840
--- /dev/null
+++ b/solver.c
@@ -0,0 +1,97 @@
+#include "global.h"
+
+void translater (char *str)
+{
+	int	cou;
+	int	convertor;
+	cou = 0;
+	root = 0;
+	convertor = 0;
+	while (covertor == 0)
+	{
+		if ((covertor = atoi(str[cou]) == 0)
+			convertor = 1;
+			break;
+		root *= 10;
+		root += atoi(str[cou]);
+		cou++;				
+	}
+	space = str[cou];
+	obstacle = str[cou + 1];
+	filler = str[cou + 2];
+}
+
+void bsqf (int entry)
+{
+	if (entry > sq_sz)
+	{
+		sq_sz = entry;
+		sq_posx = x;
+		sq_posy = y;
+	}
+}
+	
+
+void saver (int entry)
+{
+	int	grid[1000][1000];
+	grid[y][x] = entry;
+	if (y == 0)
+	{
+		if (x == 0)
+			left = 0;
+		else 
+			left = grid[y][x - 1];
+	}
+	else if (x == 0)
+	{
+		left = 0;
+		tolef = 0;
+		top = grid[y - 1][x];
+	}
+	else
+	{
+		left = grid[y][x - 1];
+		top = grid[y - 1][x];
+		tolef = grid[y - 1][x - 1];
+	}
+	bsqf (entry);
+}	
+
+	
+void calculator (char value)
+{
+	if (value == obstacle)
+		saver (0);
+	else
+	{
+		if (top <= left && top <= tolef)
+			saver (top + 1);
+		else if (left <= top && left <= tolef)
+			saver (left + 1);
+		else
+			saver (tolef + 1);
+	}
+}	
+
+void solver (char *str)
+{
+	int	cou;
+	y = 0;
+	x = 0;
+	top = 0;
+	left = 0;
+	tolef = 0;
+	cou = 0;
+	translater (str);
+	while(str[cou])
+	{
+		if (str[cou] == '\n')
+			y++;
+			x = 0;
+		else
+			calculator (str[cou]);
+		cou++;
+		x++;
+	}
+}	
\ No newline at end of file
diff --git a/test.c b/test.c
new file mode 100644
index 0000000..afd6af3
--- /dev/null
+++ b/test.c
@@ -0,0 +1,7 @@
+#include &lt;stdio&gt;
+
+int main(void)
+{
+    printf("testing git pull requests. \n");
+    return (0);
+}
diff --git a/themain.c.txt b/themain.c.txt
new file mode 100644
index 0000000..709b1e2
--- /dev/null
+++ b/themain.c.txt
@@ -0,0 +1,29 @@
+#include "global.h"
+
+main (int argc, char argv)
+{
+	int	fd;
+	int	cou;
+	char	*buf;
+	
+	cou = 0;
+	if (argc != 2)
+	{
+		write (1, "argument error", 14);
+		return (0);
+	}
+	fd = open (argv[1], O_RDWR);
+	if (fd == -1)
+	{
+		write (1, "open error" , 11);
+		return (0);
+	}
+	while ((ret = read (fd, buf, malloc_size)))
+	{
+		buf[cou] = '\0';
+		cou++;
+	}
+	solver (buf);
+	writer (buf);
+	return (0);
+}
\ No newline at end of file