diff --git a/src/apple.c b/src/apple.c
index 766d543..b712291 100644
--- a/src/apple.c
+++ b/src/apple.c
@@ -4,14 +4,29 @@ int n;
 int k;
 int A[100000];
 
-
 int main(){
   int i, lb, ub;
   scanf("%d%d", &n, &k);
   for(i = 0; i < n; i++){
     scanf("%d", &A[i]);
   }
+  lb = 0;
+  ub = 1000000000;
+  int siguma;
+  while(ub - lb > 1) {
+    int mid = (lb + ub) / 2;
+    siguma = 0;
+    for(i = 0; i < n; i++){
+      siguma = siguma + (A[i] + mid - 1) / mid;
+    }
+    if(siguma <= k){
+      ub = mid;
+    }
+    else{
+      lb = mid;
+    }
+  }
 
-
+  printf("%d\n" , ub);
   return 0;
 }
diff --git a/src/array.c b/src/array.c
index 13ed925..73311be 100644
--- a/src/array.c
+++ b/src/array.c
@@ -4,15 +4,24 @@ int n;
 int k;
 int A[100000];
 
-
 int main(){
   int i, lb, ub;
   scanf("%d%d", &n, &k);
   for(i = 0; i < n; i++){
     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("%d\n" , ub);
   return 0;
 }
diff --git a/src/spear.c b/src/spear.c
index 766d543..52d028c 100644
--- a/src/spear.c
+++ b/src/spear.c
@@ -11,7 +11,23 @@ int main(){
   for(i = 0; i < n; i++){
     scanf("%d", &A[i]);
   }
+  lb = 0;
+  ub = 1000000001;
+  int siguma;
+  while(ub - lb > 1) {
+    int mid = (lb + ub) / 2;
+    siguma = 0;
+    for(i = 0; i < n; i++){
+      siguma = siguma + A[i] / mid;
+    }
+    if(siguma >= k){
+      lb = mid;
+    }
+    else{
+      ub = mid;
+    }
+  }
 
-
+  printf("%d\n", lb);
   return 0;
 }