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Cod sursa(job #927444)
#include <iostream>
#include <fstream>
#include <algorithm>
#include <vector>
using namespace std;
vector<int> v;
vector<int>::iterator it;
int n, m, a, b, x;
ofstream g("cautbin.out");
ifstream f("cautbin.in");
int main()
{
f>>n;
for(int i=0; i<n;++i)
f>>x, v.push_back(x);
sort(v.begin(), v.end());
f>>m;
for(int i=0; i<m;++i){
f>>a>>b;
if(!a){
it=upper_bound(v.begin(), v.end(), b);
if(!(v[it-v.begin()-1]==b)) g<<"-1"<<'\n';
else g<<it-v.begin()<<'\n';
}
else if(a==1)
g<<upper_bound(v.begin(), v.end(), b)-v.begin()<<'\n';
else g<<lower_bound(v.begin(), v.end(), b)-v.begin()+1<<'\n';
}
return 0;
}