ios::sync_with_stdio(0);cin.tie(0); code example
Example 1: ios base sync with stdio
ios_base::sync_with_stdio(false);
cin.tie(NULL);
Example 2: ios_base::sync_with_stdio(false);cin.tie(0);
//For faster I/O in Competitive Progtamming in C++.
ios_base::sync_with_stdio(false);
cin.tie(NULL);
Example 3: sync_with_stdio
iostream::sync_with_stdio(false);