diff --git a/src/7/17/T634195.cpp b/src/7/17/T634195.cpp
index 40fb827..c1afa2d 100644
--- a/src/7/17/T634195.cpp
+++ b/src/7/17/T634195.cpp
@@ -2,6 +2,7 @@
 #include <cctype>
 #include <cstdint>
 #include <iostream>
+#include <istream>
 #include <limits>
 #include <string>
 #include <tuple>
@@ -76,6 +77,10 @@ ll setl(char &c){
 }
 
 int main(){
+    std::iostream::sync_with_stdio(false);
+    std::cin.tie(nullptr);
+    std::cout.tie(nullptr);
+
     std::cin>>n>>s1>>s2;
 
     s1=' '+s1;