#include <iostream> #include <cstdio> #include <cstdlib> #include <cstring> #include <cctype> #include <vector> #include <map> #include <set> #include <stack> #include <queue> #include <cmath> #include <algorithm>
#include <iostream> #include <cstdio> #include <cstdlib> #include <cstring> #include <cctype> #include <vector> #include <map> #include <set> #include <stack> #include <queue> #include <cmath> #include <algorithm>