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Cod sursa(job #444890)
#include <cstdio>
#include <algorithm>
#include <ext/hash_map>
#include <string>
#include <vector>
#include <iostream>
using namespace std;
using namespace __gnu_cxx;
#define nmax 100005
#define VIT vector <int> :: iterator
#define pb push_back
#define f first
#define s second
#define mp make_pair
vector <pair <int, string> > S;
struct cmp {
bool operator()(const pair <int, string>& a, const pair <int, string>& b) {
if (a.s.size () == b.s.size ())
return a.s.compare (b.s) < 0;
return a.s.size () < b.s.size ();
}
};
int aib [nmax], idx, order [nmax];
string str;
vector <int> opp [nmax];
inline void update (int x) {
for (; x <= idx; x += x & - x) aib [x]++;
}
inline int query (int x) {
int sum = 0;
for (; x >= 1; x -= x & -x) sum += aib [x];
return sum;
}
inline int cbin (int x)
{
int st, dr, mid, ans = 0;
st = 1; dr = idx;
while (st <= dr)
{
mid = (st + dr) / 2;
ans = query (mid);
if (ans < x)
st = mid + 1;
else if (ans > x)
dr = mid - 1;
else if (ans == x)
return mid;
}
return 0;
}
int main ()
{
freopen ("nums.in", "r", stdin);
freopen ("nums.out", "w", stdout);
int m, i, op, qq;
scanf ("%d\n", &m);
for (i = 1; i <= m; i++)
{
scanf ("%d", &op);
if (op == 1)
{
cin >> str;
++idx;
S.pb (mp (idx, str));
//cout << S [idx] << " ";
}
else if (op == 0)
{
cin >> qq;
opp [idx].pb (qq);
}
}
sort (S.begin (), S.end (), cmp ());
for (i = 0; i < S.size (); i++)
order [S [i].f] = i + 1;
int a;
for (i = 1; i <= idx; i++)
{
update (order [i]);
if (opp [i].size ())
for (VIT it = opp [i].begin (); it != opp [i].end (); it++)
{
a = cbin (*it);
cout << S [a - 1].s << "\n";
}
}
return 0;
}