diff --git a/src/apple.c b/src/apple.c
index 766d543..23d1c66 100644
--- a/src/apple.c
+++ b/src/apple.c
@@ -1,17 +1,84 @@
 #include <stdio.h>
+#include <stdbool.h>
 
 int n;
 int k;
 int A[100000];
 
+bool p(int x);
+void Num_printing(int i);
 
-int main(){
-  int i, lb, ub;
+int main()
+{
+  int i, lb = 0, ub = 0;
+  printf("Enter n and k:\n");
   scanf("%d%d", &n, &k);
-  for(i = 0; i < n; i++){
+  printf("Check the value:n=%d, k=%d\n", n, k);
+  for (i = 0; i < n; ++i)
+  {
+    Num_printing(i + 1);
     scanf("%d", &A[i]);
+    if (ub < A[i])
+    {
+      ub = A[i];
+    }
   }
 
+  while (ub - lb > 1)
+  {
+    int mid = (lb + ub) / 2;
+    // printf("x=%d\n", mid);
+    if (p(mid))
+    {
+      // printf("t\n");
+      ub = mid;
+    }
+    else
+    {
+      // printf("f\n");
+      lb = mid;
+    }
+  }
 
+  printf("Output Number:%d\n", ub);
   return 0;
 }
+
+bool p(int x)
+{
+  unsigned int count = 0;
+  for (int i = 0; i < n; i++)
+  {
+    count += (A[i] + x - 1) / x;
+    // printf("%d\n", count);
+  }
+  if (count <= k)
+  {
+    return true;
+  }
+  else
+  {
+    return false;
+  }
+}
+
+// 表示をきれいにするためのプログラム
+void Num_printing(int i)
+{
+  if (i % 10 == 1)
+  {
+    printf("Enter the array value(%d st):\n", i);
+  }
+  else if (i % 10 == 2)
+  {
+    printf("Enter the array value(%d nd):\n", i);
+  }
+  else if (i % 10 == 3)
+  {
+    printf("Enter the array value(%d rd):\n", i);
+  }
+  else
+  {
+    printf("Enter the array value(%d th):\n", i);
+  }
+}
\ No newline at end of file
diff --git a/src/array.c b/src/array.c
index 13ed925..9744302 100644
--- a/src/array.c
+++ b/src/array.c
@@ -4,15 +4,58 @@ int n;
 int k;
 int A[100000];
 
+void Num_printing(int i);
 
-int main(){
+int main()
+{
   int i, lb, ub;
-  scanf("%d%d", &n, &k);
-  for(i = 0; i < n; i++){
+  printf("Enter n and k:\n");
+  scanf("%d %d", &n, &k);
+  printf("Check the value:n=%d, k=%d\n", n, k);
+  for (i = 0; i < n; i++)
+  {
+    Num_printing(i + 1);
     scanf("%d", &A[i]);
   }
 
+  lb = -1;
+  ub = n;
 
+  while (ub - lb > 1)
+  {
+    int mid = (lb + ub) / 2;
+    if (A[mid] >= k)
+    {
+      ub = mid;
+    }
+    else
+    {
+      lb = mid;
+    }
+  }
+
+  printf("Output Number:%d\n", ub);
 
   return 0;
 }
+
+// 表示をきれいにするためのプログラム
+void Num_printing(int i)
+{
+  if (i % 10 == 1)
+  {
+    printf("Enter the array value(%d st):\n", i);
+  }
+  else if (i % 10 == 2)
+  {
+    printf("Enter the array value(%d nd):\n", i);
+  }
+  else if (i % 10 == 3)
+  {
+    printf("Enter the array value(%d rd):\n", i);
+  }
+  else
+  {
+    printf("Enter the array value(%d th):\n", i);
+  }
+}
\ No newline at end of file
diff --git a/src/spear.c b/src/spear.c
index 766d543..ca93989 100644
--- a/src/spear.c
+++ b/src/spear.c
@@ -1,17 +1,84 @@
 #include <stdio.h>
+#include <stdbool.h>
 
 int n;
 int k;
 int A[100000];
 
+bool p(int x);
+void Num_printing(int i);
 
-int main(){
-  int i, lb, ub;
+int main()
+{
+  int i, lb = 0, ub = 0;
+  // printf("Enter n and k:\n");
   scanf("%d%d", &n, &k);
-  for(i = 0; i < n; i++){
+  // printf("Check the value:n=%d, k=%d\n", n, k);
+  for (i = 0; i < n; ++i)
+  {
+    //Num_printing(i + 1);
     scanf("%d", &A[i]);
+    if (ub < A[i])
+    {
+      ub = A[i] + 1;
+    }
   }
 
+  while (ub - lb > 1)
+  {
+    int mid = (lb + ub) / 2;
+    // printf("x=%d\n", mid);
+    if (p(mid))
+    {
+      // printf("t\n");
+      lb = mid;
+    }
+    else
+    {
+      // printf("f\n");
+      ub = mid;
+    }
+  }
 
+  printf("%d\n", lb);
   return 0;
 }
+
+bool p(int x)
+{
+  unsigned int count = 0;
+  for (int i = 0; i < n; i++)
+  {
+    count += A[i] / x;
+    // printf("%d\n", count);
+  }
+  if (count < k)
+  {
+    return false;
+  }
+  else
+  {
+    return true;
+  }
+}
+
+// 表示をきれいにするためのプログラム
+void Num_printing(int i)
+{
+  if (i % 10 == 1)
+  {
+    printf("Enter the array value(%d st):\n", i);
+  }
+  else if (i % 10 == 2)
+  {
+    printf("Enter the array value(%d nd):\n", i);
+  }
+  else if (i % 10 == 3)
+  {
+    printf("Enter the array value(%d rd):\n", i);
+  }
+  else
+  {
+    printf("Enter the array value(%d th):\n", i);
+  }
+}
\ No newline at end of file
diff --git a/src/works.c b/src/works.c
index 766d543..59688ad 100644
--- a/src/works.c
+++ b/src/works.c
@@ -1,17 +1,101 @@
 #include <stdio.h>
+#include <stdbool.h>
 
 int n;
 int k;
 int A[100000];
 
+bool p(int x);
+void Num_printing(int i);
 
-int main(){
-  int i, lb, ub;
+int main()
+{
+  int i, lb = 0, ub = 0;
+  // printf("Enter n and k:\n");
   scanf("%d%d", &n, &k);
-  for(i = 0; i < n; i++){
+  // printf("Check the value:n=%d, k=%d\n", n, k);
+  for (i = 0; i < n; ++i)
+  {
+    // Num_printing(i + 1);
     scanf("%d", &A[i]);
+    ub += A[i];
   }
 
+  while (ub - lb > 1)
+  {
+    int mid = (lb + ub) / 2;
+    // printf("x=%d\n", mid);
+    if (p(mid))
+    {
+      // printf("t\n");
+      ub = mid;
+    }
+    else
+    {
+      // printf("f\n");
+      lb = mid;
+    }
+  }
 
+  printf("%d\n", ub);
   return 0;
 }
+
+bool p(int x)
+{
+  int temp = 0, i = 0, count = 0;
+  while (1)
+  {
+    temp = x;
+    ++count;
+    if (x < A[i])
+    {
+      // printf("big false\n");
+      return false;
+    }
+    if (i >= n - 1)
+    {
+      break;
+    }
+    while (1)
+    {
+      temp -= A[i];
+      // printf("roop1(temp=%d,i=%d,count=%d)\n", temp, i, count);
+      ++i;
+      if (i >= n || temp < A[i])
+      {
+        break;
+      }
+    }
+    // printf("roop2(count=%d,i=%d)\n", count, i);
+  }
+  if (count > k)
+  {
+    return false;
+  }
+  else
+  {
+    return true;
+  }
+}
+
+// 表示をきれいにするためのプログラム
+void Num_printing(int i)
+{
+  if (i % 10 == 1)
+  {
+    printf("Enter the array value(%d st):\n", i);
+  }
+  else if (i % 10 == 2)
+  {
+    printf("Enter the array value(%d nd):\n", i);
+  }
+  else if (i % 10 == 3)
+  {
+    printf("Enter the array value(%d rd):\n", i);
+  }
+  else
+  {
+    printf("Enter the array value(%d th):\n", i);
+  }
+}
\ No newline at end of file