How to access map of set of pairs elements?

    #include <iostream>
    #include <map>
    #include <set>
    #include <utility>
    int main()
    {
        std::map<int,std::set<std::pair<int,int>>>map1;

        for(int i = 0; i != 3; ++i) map1[i].insert({i+1,i+2});

        for(auto i : map1){

         std::cout<<i.first<<" ";

         pair<int,int> j = i.second;

         j.first<<" "<<j.second<<"\n";
       }
       return 0;
    }          

error: conversion from std::set < std::pair< int, int > > to non-scalar type std::pair < int, int > requested pair< int, int > j = i.second;