#include <cstdio>
#include <iostream>
#include <istream>
#include <map>
using namespace std;


map<int, int> mp;

int tree[1000];
void build_tree(int p, int l, int r) {
    int mid = (l + r) >> 1;
    build_tree(p << 1, l, mid);
    build_tree(p<<1|1, mid+1, r);
}

int main (int argc, char *argv[])
{
    map<int, int> mp;
    mp.size();
    mp.size();
    map<int, pair<int, int>> mp2;
}