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// priority_queue::empty
#include <iostream> // std::cout
#include <queue> // std::priority_queue
int main ()
{
std::priority_queue<int> mypq;
int sum (0);
for (int i=1;i<=10;i++) mypq.push(i);
while (!mypq.empty())
{
sum += mypq.top();
mypq.pop();
}
std::cout << "total: " << sum << '\n';
return 0;
}
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