STL template

#include <bits/stdc++.h>

// settings
    #define FILE "good"
    #define USE_FREOPEN 1
    #define USE_LONG 1
    #define USE_IOSOPT 0

// system
    #if USE_LONG
        typedef long long ll;
        typedef unsigned long long ull;
    #else
        typedef int ll;
        typedef unsigned int ull;
    #endif
    #define pb push_back
    #define mp make_pair
    #define p(a, b) pair < a, b >
    #define sq(x) (x * x)
    #define fi first
    #define se second
    #define rm erase
    #define ins insert
    #define rev(a) reverse(a.begin(), a.end())
    #define ord(a) sort(a.begin(), a.end())
    #define rs resize
    #define sz size
    #define stlprint(a) \
        for(auto __LEVEL_1_STL_ITERATOR = a.begin(); __LEVEL_1_STL_ITERATOR != a.end(); __LEVEL_1_STL_ITERATOR++) \
        { \
            printf("%lld ", *__LEVEL_1_STL_ITERATOR); \
        }
    #define die(a) \
        { \
            cout << a << endl; \
            exit(0); \
        }

using namespace std;

int main()
{
    // ios{
        #if USE_IOSOPT
            ios_base::sync_with_stdio(false);
            cin.tie(0);
        #endif
        #if USE_FREOPEN
            freopen(FILE".in", "r", stdin);
            freopen(FILE".out", "w", stdout);
        #endif
}