# Include <algorithm> // General STL Algorithm
# Include <bitset> // STL bit set container
# Include <cctype>
# Include <cerrno>
# Include <clocale>
# Include <cmath>
# Include <complex> // plural class
# Include <cstdio>
# Include <cstdlib>
# Include <cstring>
# Include <ctime>
# Include <deque> // STL double-end queue container
# Include <exception> // exception handling class
# Include <fstream>
# Include <functional> // STL defines operation functions (instead of operators)
# Include <limits>
# Include <list> // STL linear list container
# Include <map> // STL ing container
# Include <iomanip>
# Include <IOS> // Basic Input/Output support
# Include <iosfwd> // pre-declaration used by the input/output system
# Include <iostream>
# Include <istream> // basic input stream
# Include <ostream> // Basic output stream
# Include <queue> // STL queue container
# Include <set> // STL collection container
# Include <sstream> // string-based stream
# Include <stack> // STL stack container
# Include <stdexcept> // standard exception class
# Include <streambuf> // underlying input/output support
# Include <string> // string class
# Include <utility> // STL common template class
# Include <vector> // STL dynamic array container
# Include <cwchar>
# Include <cwctype>
Using namespace STD;
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