Why such strange behaviour of priority queue size() function.

Правка en1, от vintage_Petr_Mitrichev, 2019-06-12 23:32:15

Why such strange behaviour while outputting the difference in sizes of two queues. When i am storing them in a diff variable its showing right answer, while just outputting the difference gives wrong answer.

code

#include<bits/stdc++.h>
using namespace std;
int main()
{
    priority_queue<int , vector<int> , greater<int> > pmin;
    priority_queue<int , vector<int> >pmax;
    pmin.push(5);
    pmin.push(9);
    pmin.push(10);
    pmax.push(1);
    cout << pmax.size() - pmin.size() << endl;
    return 0 ;
}

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en7 Английский vintage_Petr_Mitrichev 2019-06-13 00:34:52 8 Tiny change: '\n****\n**Since down' -> '\n****\n**TO DV : Since down'
en6 Английский vintage_Petr_Mitrichev 2019-06-13 00:34:11 25 Tiny change: 'affects me as most of them know why, but I th' -> 'affects me, but I th'
en5 Английский vintage_Petr_Mitrichev 2019-06-13 00:31:45 20 Tiny change: 'd answers would be here.**' -> 'd answers known to other people.**'
en4 Английский vintage_Petr_Mitrichev 2019-06-13 00:30:54 7 Tiny change: ' if some great answers w' -> ' if some good answers w'
en3 Английский vintage_Petr_Mitrichev 2019-06-13 00:28:21 216
en2 Английский vintage_Petr_Mitrichev 2019-06-12 23:32:49 71
en1 Английский vintage_Petr_Mitrichev 2019-06-12 23:32:15 640 Initial revision (published)