diff --git a/src/7/23/T637678.cpp b/src/7/23/T637678.cpp
index 9c80e9c..ae4ec24 100644
--- a/src/7/23/T637678.cpp
+++ b/src/7/23/T637678.cpp
@@ -1,11 +1,10 @@
 #include <bits/stdc++.h>
 #include <cstdint>
 #include <iostream>
-#include <istream>
 using namespace std;
 using ll = int64_t;
 
-__attribute__((always_inline)) static inline vector<ll> sub(vector<int>& nums) {
+__attribute__((always_inline)) static vector<ll> sub(vector<int>& nums) {
     int n = nums.size();
     if (n == 0) {
         return {0};
@@ -26,7 +25,7 @@ __attribute__((always_inline)) static inline vector<ll> sub(vector<int>& nums) {
 
 int main() {
     iostream::sync_with_stdio(false);
-    cin.tie(nullptr);
+    ios::sync_with_stdio(false);
     cout.tie(nullptr);
     int n, q;
     scanf("%d %d", &n, &q);