diff --git a/coins/main.cpp b/coins/main.cpp
index d03342d..08826f2 100644
--- a/coins/main.cpp
+++ b/coins/main.cpp
@@ -1,5 +1,5 @@
 #include<string.h>
-#include<stdio.h>
+#include <bits/stdc++.h>
 using namespace std;
 int arr[100001];