| # | Time | Username | Problem | Language | Result | Execution time | Memory |
|---|---|---|---|---|---|---|---|
| 673468 | Do_you_copy | Crayfish scrivener (IOI12_scrivener) | C++17 | 0 ms | 0 KiB |
This submission is migrated from previous version of oj.uz, which used different machine for grading. This submission may have different result if resubmitted.
//Then
#include <bits/stdc++.h>
#define pb push_back
#define fi first
#define se second
#define faster ios_base::sync_with_stdio(0); cin.tie(0);
using namespace std;
using ll = long long;
using ld = long double;
using pii = pair <int, int>;
mt19937_64 Rand(chrono::steady_clock::now().time_since_epoch().count());
const int maxN = 1e6 + 10;
//const int Mod = 1e9 + 7;
//const int inf =
int q;
int pos[maxN], cnt, cnt1;
int depth[maxN];
int lift[maxN][20];
char s[maxN];
void Init(){
cin >> q;
while (q--){
char c, t;
int x;
cin >> t;
if (t == 'T'){
cin >> c;
pos[++cnt1] = ++cnt;
lift[cnt][0] = pos[cnt1 - 1];
for (int i = 1; i < 20; ++i){
lift[cnt][i] = lift[lift[cnt][i - 1]][i - 1];
}
depth[cnt] = depth[pos[cnt1 - 1]] + 1;
s[cnt] = c;
}
else{
cin >> x;
if (t == 'P'){
int u = pos[cnt1];
int k = depth[cnt] - x - 1;
while (k){
int t = __builtin_ctz(k);
u = lift[u][t];
k -= 1 << t;
}
cout << s[u] << "\n";
}
else{
++cnt1;
pos[cnt1] = pos[cnt1 - x - 1];
}
}
}
}
#define debug
#define taskname "test"
signed main(){
faster
if (fopen(taskname".inp", "r")){
freopen(taskname".inp", "r", stdin);
freopen(taskname".out", "w", stdout);
}
int tt = 1;
//cin >> tt;
while (tt--){
Init();
}
if (fopen("timeout.txt", "r")){
ofstream timeout("timeout.txt");
timeout << signed(double(clock()) / CLOCKS_PER_SEC * 1000);
timeout.close();
#ifndef debug
cerr << "Time elapsed: " << signed(double(clock()) / CLOCKS_PER_SEC * 1000) << "ms\n";
#endif // debug
}
}