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Cod sursa(job #797845)
#include <fstream>
#include <vector>
#include <algorithm>
using namespace std;
int main()
{
ifstream in("cautbin.in");
int N, M;
in >> N;
vector<int> elements(N);
for(int i = 0; i < N; ++i)
in >> elements[i];
sort(elements.begin(), elements.end());
in >> M;
ofstream out("cautbin.out");
for(int i = 0, type, query; i < M; ++i)
{
in >> type >> query;
int exact;
switch(type)
{
case 0:
exact = upper_bound(elements.begin(), elements.end(), query) - elements.begin() - 1;
if(0 <= exact && exact < N && elements[exact] == query)
out << exact + 1 << " ";
else
out << -1 << " ";
break;
case 1:
out << lower_bound(elements.begin(), elements.end(), query + 1) - elements.begin() << " ";
break;
case 2:
out << upper_bound(elements.begin(), elements.end(), query - 1) - elements.begin() + 1 << " ";
}
}
in.close();
out.close();
return 0;
}