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

int main()
{

    map<int,int> m;
    //report no matching constructor but can run
    pair<int,int> p(10,25);
    m.insert(p);
    //output 10,25
    auto iter=m.find(10);
    if(iter!=m.end())
        cout<<iter->first<<","<<iter->second<<endl;
    else
        cout<<"no such key"<<endl;
    //output "no such key"
    auto iter2=m.find(1);
    if(iter2!=m.end())
        cout<<iter2->first<<","<<iter2->second<<endl;
    else
        cout<<"no such key"<<endl;

    return 0;
}