CodeForces Round #296 Div.2

// multiset::equal_elements
#include <iostream>
#include <set>

typedef std::multiset<int>::iterator It;  // aliasing the iterator type used

int main ()
{
int myints[]= {77,30,16,2,30,30};
std::multiset<int> mymultiset (myints, myints+6);  // 2 16 30 30 30 77

std::pair<It,It> ret = mymultiset.equal_range(30); //      ^        ^

mymultiset.erase(ret.first,ret.second);

std::cout << "mymultiset contains:";
for (It it=mymultiset.begin(); it!=mymultiset.end(); ++it)
std::cout << ' ' << *it;
std::cout << '\n';

return 0;
}