This submission is migrated from previous version of oj.uz, which used different machine for grading. This submission may have different result if resubmitted.
#include <bits/stdc++.h>
#pragma GCC optimize("O3")
#define FOR(i, x, y) for(int i = x; i < y; i++)
typedef long long ll;
using namespace std;
int dp[21][1000001], indx = 1, len_at[1000001];
char char_at[1000001];
void Init() {}
void TypeLetter(char L) {
char_at[indx] = L;
len_at[indx] = len_at[indx - 1] + 1;
dp[0][indx] = indx - 1;
FOR(i, 1, 21) dp[i][indx] = dp[i - 1][dp[i - 1][indx]];
indx++;
}
void UndoCommands(int U) {
char_at[indx] = char_at[indx - U - 1];
len_at[indx] = len_at[indx - U - 1];
dp[0][indx] = dp[0][indx - U - 1];
FOR(i, 1, 21) dp[i][indx] = dp[i - 1][dp[i - 1][indx]];
indx++;
}
char GetLetter(int P) {
int curr = indx - 1, x = len_at[indx - 1] - P - 1;
for (int i = 0; x > 0; i++) {
if (x & 1) curr = dp[i][curr];
x >>= 1;
}
return char_at[curr];
}
// int main() {
// ios_base::sync_with_stdio(0), cin.tie(0);
// int t;
// cin >> t;
// Init();
// for (int i = 0; i < t; i++) {
// char c, d;
// int e;
// cin >> c;
// switch (c) {
// case 'T':
// cin >> d;
// TypeLetter(d);
// break;
// case 'P':
// cin >> e;
// cout << GetLetter(e) << '\n';
// break;
// default:
// cin >> e;
// UndoCommands(e);
// }
// }
// }
# | Verdict | Execution time | Memory | Grader output |
---|
Fetching results... |
# | Verdict | Execution time | Memory | Grader output |
---|
Fetching results... |
# | Verdict | Execution time | Memory | Grader output |
---|
Fetching results... |
# | Verdict | Execution time | Memory | Grader output |
---|
Fetching results... |
# | Verdict | Execution time | Memory | Grader output |
---|
Fetching results... |