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#include <bits/stdc++.h>

using namespace std;

struct queueMin {

queueMin() {}

deque <int> q;

int min() {

return q.front();

}

void push(int x) {

while (!q.empty() && q.back() > x)

q.pop_back();

q.push_back (x);

}

void pop(int x) {

if (!q.empty() && q.front() == x)

q.pop_front();

}

};