vector 初始化
vector<vector<int>> f(n, vector<int>(m,INT_MAX));
vector<bool> st(n,false);
#include<bits/stdc++.h>
using namespace std;
map<int,int> mp;
vector<int> ans;
int main()
{
for(int i=0;i<10;i++)
{
ans.push_back(i);
mp[i]=i;
}
map<int,int>::iterator it;
for(it=mp.begin();it!=mp.end();it++)
cout<<it->first<<" "<<it->second<<endl;
vector<int>::iterator it1;
for(it1=ans.begin();it1!=ans.end();it1++)
cout<<*it1<<" ";
return 0;
}